Public evidence page
Judo
Sport
Sport: Judo
Athletes' bodies
Elite male judoka tend to be moderately tall with long arms/leverages and relatively low body fat. Their build favors explosive throwing mechanics (fast force production + repeated efforts), gripping strength, and dynamic flexibility for off-balancing and transitions. Anthropometrics are somewhat variable by weight class, but the common theme is efficient leverage (arm span relative to height) and robust, mesomorphic/athletic body composition.
Cohort
Sex: Male
Level: Elite
Quick glossary
- Prior
- Model estimate before updating with the current evidence; the starting baseline.
- Posterior
- Model-updated estimate after combining prior evidence with observed data.
- Standard deviation
- Spread around the estimate; lower means tighter expected range.
- Alignment
- How well a goal/preference/injury profile matches this body pattern.
Measurements
| Factor | Prior | Posterior | Success-impact | Reasoning behind prior | Prior estimate sources |
|---|---|---|---|---|---|
| Arm span | 184 ± 7 cm | 184 ± 7 cm | high | Elite judoka often benefit from longer reach/leverages for gripping and kuzushi setups. The mean is set slightly above height (positive reach advantage) with moderate variability. | [1] |
| Height | 178 ± 7 cm | 178 ± 7 cm | high | Judo spans multiple weight classes; elite male heights cluster roughly around upper-intermediate adult male range. The value (178 cm) represents a weighted central tendency for elite-level men rather than a single weight-class target. | [2] [3] |
| Weight | 78 ± 12 kg | 78 ± 12 kg | high | Because the cohort is 'elite' but not fixed to a weight category, the weight distribution is kept broad (std dev ~12 kg). The mean (78 kg) balances lighter and heavier male divisions commonly seen at the elite level. | [2] [3] |
| Ape index | 1.01 ± 0.04 ratio | 1.01 ± 0.04 ratio | medium | Elite judoka can benefit from positive reach (ape index > 1). Value is set near 1.01 with tight SD to reflect typical human variability rather than extreme long-limb phenotypes. | [4] |
| Leg inseam | 86 ± 4 cm | 86 ± 4 cm | medium | Inseam is approximated to reflect typical male limb proportions at ~178 cm height, without assuming extreme long-leg or short-leg morphology. | [5] |
| Shoulder-hip ratio | 1.05 ± 0.06 ratio | 1.05 ± 0.06 ratio | medium | Ratio is modeled to represent an athletic (not radically top-heavy) trunk. Judo does require hip power and rotational stability, so the ratio is set only slightly above 1. | [6] |
| Shoulder width | 44 ± 3.2 cm | 44 ± 3.2 cm | medium | Judo does not strictly select for maximal shoulder width like overhead throwing/pressing sports, but a mesomorphic frame is common. Hence moderate shoulder width rather than extreme values. | [7] |
| Torso length | 58 ± 4 cm | 58 ± 4 cm | medium | Torso length is modeled as a central adult-proportion trait near the cohort height rather than assumed to be long/short specifically for judo. | [8] |
| Ankle circumference | 22.8 ± 1.6 cm | 22.8 ± 1.6 cm | low | Ankle girth affects footwear fit and potentially stability for kumi-kata/posting, but it is not a primary selector trait in elite judo. | [9] |
| Foot length | 24.6 ± 1.4 cm | 24.6 ± 1.4 cm | low | Many judo datasets don’t report foot length directly. Here, foot length is estimated from a male anthropometric study's foot-length segment values and mapped to a single 'foot length' modeling parameter. | [10] |
| Hand length | 19 ± 1.5 cm | 19 ± 1.5 cm | low | Judoka gripping can benefit from effective hand/finger size, but hand length is not typically a dominant differentiator versus overall body size, strength, and reach. | [11] |
| Leg-torso ratio | 1.45 ± 0.08 ratio | 1.45 ± 0.08 ratio | low | Set to typical adult male proportions to avoid overfitting; judo benefits from whole-body coordination, not only leg dominance. | [12] |
| Pelvic bone width | 28 ± 2.2 cm | 28 ± 2.2 cm | low | Bone-width is not commonly reported in judo studies; this is set to a realistic adult male value to support clothing/biomechanics modeling while acknowledging uncertainty. | [13] |
| Wrist circumference | 17.7 ± 0.9 cm | 17.7 ± 0.9 cm | low | Wrist circumference correlates with skeletal frame and correlates with grip leverage, but in judo the decisive factors are often technique + strength training rather than wrist girth alone. | [14] |
Traits
| Factor | Value | Impact | Reasoning | Sources |
|---|---|---|---|---|
| Muscle fiber profile | balanced | high | Judo contains high-rate explosive actions (grip-to-off-balance, bursts during transitions) but also repeated combat bouts requiring ability to repeat power under fatigue. Therefore a balanced optimum is modeled rather than purely fast-twitch. | [15] |
| Metabolic tendency | mesomorphic tendency | medium | Elite judoka commonly maintain leanness while still carrying functional muscle mass for gripping and throws; 'mesomorph' matches that athletic maintenance tendency. | [15] |
| Joint laxity | medium | medium | Optimal judo function needs enough range for grips/turning/off-balancing, but throwing mechanics also demand stiffness/force transfer at critical joints. Medium laxity best matches that tradeoff. | [16] |
| Foot arch | neutral arch | low | Judo requires stance stability and repeated pivoting/stepping; neutral arches are generally adequate, while extreme flat/high arches are not typically 'elite selectors' by themselves. | [17] |
| Temperature tolerance | balanced | low | Judo is indoor and variable across tournaments; performance depends more on pacing, hydration, and conditioning than on a single body-architecture thermotype. | [18] |
| Dominant side | no meaningful side advantage | low | Matchups and tactical style matter, and dominance effects depend on opponents; so the optimal cohort is treated as neutral at the database level. | [19] |
Goals
| Factor | Alignment | Reasoning | Sources |
|---|---|---|---|
| Build confidence | high | Confidence usually grows when you can learn a new skill, face controlled challenges, and see progress through technique mastery and sparring competence. Judo has a clear progression system (new throws, grips, and roles), and it trains self-control and successful coping under pressure—both strongly support building confidence. ([bmcgeriatr.biomedcentral.com](https://bmcgeriatr.biomedcentral.com/articles/10.1186/s12877-025-06058-6?utm_source=openai)) | [20] [21] |
| Build endurance | high | Even though judo includes explosive bursts, typical training also includes many rounds and repeated efforts that tax aerobic and anaerobic systems. Research and reviews report cardiovascular fitness improvements in judoka, indicating strong endurance potential for amateurs. ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC12213561/?utm_source=openai)) | [22] [23] [24] |
| Build strength and power | high | Judo trains strength and power directly through gripping, pulling, explosive entries, and repeated throw attempts, plus partner resistance. Studies in combat sports (including judo training cycles) commonly show improvements in strength-endurance and power-relevant capacities—so this is a strong match. ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC9961120/?utm_source=openai)) | [22] [25] |
| Challenge myself | high | Judo naturally feels demanding: you work against real resistance from a partner, manage fatigue, learn safe technique, and progressively handle higher intensity. For many amateurs this creates a strong sense of personal challenge and reward. ([frontiersin.org](https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2025.1632095/full?utm_source=openai)) | [20] [21] |
| Compete and measure myself | medium | Judo offers clear competitive pathways (tournaments, belts), so measurement is possible. But many amateurs primarily focus on training/drills and avoid formal competition at first due to contact intensity and risk. So the alignment is moderate-to-high depending on whether you actively compete; as a general default for “amateur wanting benchmarks,” it’s medium. ([en.wikipedia.org](https://en.wikipedia.org/wiki/Judo_rules?utm_source=openai)) | [26] [27] |
| Improve agility and coordination | high | To throw and grapple effectively, you must coordinate whole-body movement, maintain balance while off-balancing an opponent, and link movements smoothly. Training typically includes rapid footwork, timing, hand/arm-to-body coordination, and spatial awareness—so it’s very aligned with agility and coordination. ([arxiv.org](https://arxiv.org/abs/1206.1135?utm_source=openai)) | [28] [29] |
| Improve balance and control | high | Judo is fundamentally about off-balancing (kuzushi) and controlling both your own posture and your opponent’s position during throws and grappling. Even at beginner levels, the sport trains you to stay stable under movement, friction, and contact. ([bmcgeriatr.biomedcentral.com](https://bmcgeriatr.biomedcentral.com/articles/10.1186/s12877-025-06058-6?utm_source=openai)) | [20] [28] |
| Improve flexibility and mobility | medium | Judo includes movement ranges (hips, shoulders, rotation) and stretching/mobility is common in warmups, which can improve mobility over time. But typical improvement in flexibility depends a lot on whether the dojo emphasizes mobility work specifically, so it’s usually a secondary benefit rather than the main outcome. ([mdpi.com](https://www.mdpi.com/2673-8392/3/3/71?utm_source=openai)) | [30] [31] |
| Improve general health and fitness | high | Judo is full-body training with regular practice of grappling, throwing, falling skills, and conditioning. For most amateurs, this quickly translates into better overall fitness: cardiovascular conditioning, muscular endurance, coordination, and functional strength—so it strongly supports general health and fitness as a baseline habit. ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC12213561/?utm_source=openai)) | [22] [25] [32] |
| Improve speed and explosiveness | high | Judo emphasizes fast reactions, explosive leverage changes, and sudden bursts during throws and transitions. While speed/plyometric development is also influenced by coaching and training content, the core activity repeatedly demands “quick, forceful, coordinated” movement. ([arxiv.org](https://arxiv.org/abs/1206.1135?utm_source=openai)) | [28] [29] |
| Learn new skills and master technique | high | This is one of judo’s defining strengths. Technique is highly structured (throws, grips, control, escapes, safe falling), and progression is usually measurable (drills → controlled sparring → more advanced techniques). So it matches the goal directly. ([en.wikipedia.org](https://en.wikipedia.org/wiki/Judo_rules?utm_source=openai)) | [28] [33] |
| Lose weight | medium | Judo can burn a meaningful number of calories because it involves continuous grappling rounds plus conditioning. However, weight loss still depends heavily on body composition goals, training frequency, and diet. So judo is helpful, but not as reliably “targeted” as sports built mainly around steady aerobic work. ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC12213561/?utm_source=openai)) | [22] [25] |
| Make friends and feel a sense of belonging | high | Because judo training is partner-based (drilling, randori/sparring, feedback), you typically train repeatedly with the same people. That structure plus shared goals (belt progression, improving together) makes social bonding likely, especially in a club/community setting. ([bmcgeriatr.biomedcentral.com](https://bmcgeriatr.biomedcentral.com/articles/10.1186/s12877-025-06058-6?utm_source=openai)) | [20] |
| Reduce stress and feel better | medium | Many people find judo helps with stress because it combines physical exertion with focus on technique and controlled breathing/mental regulation during training. There is also emerging research linking judo programs to stress and psychological measures, but results vary by individual and program design. ([psychosocial.com](https://www.psychosocial.com/index.php/ijpr/article/view/1089?utm_source=openai)) | [21] [34] [35] |
| Spend time with people I care about | medium | Judo is practiced with partners, but it’s not typically a “talk while you do it” sport—sparring/drilling requires focus and safety. Still, you can spend meaningful time with friends via training attendance and social community, but conversation during the activity is limited. ([bmcgeriatr.biomedcentral.com](https://bmcgeriatr.biomedcentral.com/articles/10.1186/s12877-025-06058-6?utm_source=openai)) | [20] |
Preferences
| Factor | Alignment | Reasoning | Sources |
|---|---|---|---|
| Competition-focused environment | medium | Judo has a strong competitive pathway (belts, tournaments, leagues), but many amateurs also train mainly for fitness/skill and enjoy sparring without taking a “results-first” culture as their main motivation. | [36] |
| Enjoys contact | high | Judo is a full-contact grappling/throwing sport where physical contact is central to executing techniques and to controlling an opponent on the ground. | [37] |
| Flexible Time Table | low | It’s flexible in the sense that you can train as often as you want, but judo usually requires scheduled classes at a dojo and partner/opponent availability. It’s not like running where you can easily train completely on your own anytime. | [38] |
| Indoor setting | high | Judo is almost always practiced in a dojo on tatami mats, with controlled temperature and mat-based falling/throwing practice. | [39] |
| Long steady efforts | low | Judo is not primarily about long, steady aerobic pacing. Instead, it alternates between short action phases (grip/entries/attempts) and resets, with many changes in intensity. | [40] |
| Low impact on joints | low | While judo can be taught with safer falling/rolling technique, it still involves throws, falls, and joint/ligament stress from contact and grappling. Injury literature in judo (and related grappling/judo competitions) shows non-trivial injury risk to joints such as elbows and knees. | [41] [42] |
| Mostly individual | high | Even though you train with partners, the core sport is two-person combat: you learn techniques, do solo conditioning, and practice skills with a partner role-by-role. Amateur judo is largely about individual technique, timing, and decision-making rather than coordinated team tactics. | [43] |
| Non-contact | none | Judo is explicitly contact-grappling: grips, off-balancing, throws, pins, and submissions involve direct physical contact. | [44] |
| Outdoor setting | none | Standard judo training and matches require mats and controlled conditions; it’s not commonly an outdoor sport. | [45] |
| Playful recreational atmosphere | low | While judo can be fun and social, the training culture is commonly serious about safety, intensity control, respect, and skill execution—especially when throws and submissions are involved. | [41] |
| Routine and structure | medium | Judo clubs typically have a structured class format (warm-up, technique instruction, drilling, randori/bouts), and matches follow a ruleset. However, live sparring is unpredictable, so it’s not as “repeatable step-by-step” as, say, swimming laps or a fixed fitness routine. | [46] |
| Short explosive efforts | high | Judo often features brief, high-power actions—explosive entries into throwing positions, sudden off-balancing, and rapid transitions to groundwork. Matches include many short bursts even if the overall bout isn’t just one sprint. | [47] [48] |
| Tactical and strategic | high | Even as a beginner, you make frequent tactical choices: how to grip, when to enter for a throw, how to defend, how to manage distance, and when to transition to groundwork. Success depends heavily on reading the opponent’s balance and intentions. | [49] |
| Team environment | none | Judo is practiced with a training partner, but your development (drills, grips, throws, randori/bouts) is not really “team-based” in the way sports like soccer or volleyball are. Most learning and performance is centered on you vs your partner/opponent. | [50] |
| Technique-heavy | high | Judo is fundamentally technique-based: learning correct grips, leverage, off-balancing, timing, and safe falling/throw mechanics is central to progress for beginners and amateurs. | [51] |
| Variety and novelty | medium | There is lots of variety in opponents, grips, and throw/grappling sequences, but the sport also uses a finite set of core techniques and patterns that you repeatedly drill as you progress. | [52] |
| Water environment | none | There’s no meaningful water component to judo’s training or competition. | [39] |
Injuries
Risk
| Factor | Value | Definition | Full reasoning | Sources |
|---|---|---|---|---|
| Achilles tendon pain (tendinopathy) | low | Pain and irritation in the Achilles tendon at the back of the ankle. | The ankle/foot is an injury region in judo, and landings can stress the triceps surae/Achilles, but Achilles tendinopathy is not clearly established as one of the most common judo problems compared with knee/shoulder/hand-fingers. So risk is low. | [53] [54] |
| ACL injury | medium | A major ligament injury inside the knee, often linked to pivoting, landing, or sudden deceleration. | Judo can involve forced knee positions and landings after being thrown, and knee injuries are common in judo epidemiology. While ACL specifically isn’t always the most reported single diagnosis in judo injury-location summaries, the combination of common knee injury and mechanisms makes ACL risk plausibly medium. | [57] [58] |
| Ankle sprain | medium | A stretched or torn ankle ligament, usually after the foot rolls awkwardly. | Judo injury epidemiology shows injury distribution that includes the lower extremity with notable ankle/foot involvement. Mechanisms (being thrown, landing, foot entanglements during gripping/fighting) commonly lead to sprains. Since ankle/foot injuries are more than rare but typically not as dominant as knee/shoulder/hand, risk is medium. | [53] [61] |
| Calf strain | low | A pulled or overloaded calf muscle, often felt during pushing off, sprinting, or jumping. | Lower limbs are injured in judo and calf stress can occur, but the most frequent injury-site headlines are knee/shoulder/hand. So low risk. | [57] |
| Finger or hand impact injury | high | Pain from jamming, bending, or striking the fingers or hand during sport. | Judo injury reviews report hand/finger injuries as very common, with some datasets indicating fingers as among the most frequently injured regions depending on definitions. Therefore high risk. | [57] |
| General forearm overuse pain | low | Ongoing forearm pain from repeated gripping, lifting, or arm use when the exact tendon is unclear. | Across judo injury epidemiology, the most common reported regions are typically the knee, shoulder, and hand/fingers, with forearm-specific overuse being comparatively less emphasized. Grip fighting can stress the forearm, but without clear evidence that forearm overuse is a top-tier common injury compared with those regions, risk is set to low rather than medium. | [53] [61] |
| General foot or ankle pain | medium | Ongoing foot or ankle pain when the exact structure or diagnosis is unclear. | Judo injury reviews show extremity injuries are common, and multiple studies highlight ankle/foot as a notable injury location (though knee/shoulder/hand often lead). Because foot/ankle pain is a broader category than a single diagnosis, risk is medium. | [53] [62] |
| General hip or groin pain | medium | Ongoing hip or groin pain when the exact structure or diagnosis is unclear. | Judo contains repeated explosive hip movements and forceful positions that commonly stress groin-related structures. While knee/shoulder may be the most frequent reported injury sites, hip/groin pain is still a recognized category of combat-sport musculoskeletal problems, making medium appropriate. | [53] [63] |
| General knee pain | high | Ongoing knee pain when the exact structure or diagnosis is unclear. | Systematic review and other judo injury-distribution studies repeatedly identify the knee as one of the most frequently injured anatomical locations (often leading or near-leading). Given that, risk is set to high. | [57] [64] |
| General lower-back pain | low | Ongoing lower-back pain when the exact source is unclear. | Some studies report spine involvement, but compared with knee/shoulder/hand dominance, general lower back pain risk is lower. So low. | [57] [67] |
| General lower-leg pain | low | Ongoing shin or calf pain when the exact diagnosis is unclear. | Because the lower leg isn’t typically the leading injury category in judo epidemiology summaries, risk is low (not none because it’s plausible due to ankle/foot/lower-limb involvement). | [57] |
| General shoulder pain | high | Ongoing shoulder pain when the exact structure or diagnosis is unclear. | Systematic review and competition injury-frequency studies show shoulder is among the most commonly injured anatomical locations in judo (often near knee). This supports high risk. | [57] [64] |
| General wrist or hand pain | high | Ongoing wrist or hand pain when the exact structure or diagnosis is unclear. | Hand/finger injury is repeatedly reported as a very common judo injury region. Broad wrist/hand pain therefore carries high risk at moderate participation frequency. | [57] |
| Golfer's elbow | none | Pain on the inside of the elbow linked to overload in the forearm tendons. | In judo epidemiology, commonly emphasized injury areas are knee, shoulder, and hand/fingers. Medial-elbow tendinopathy is not consistently highlighted as a top common outcome, so the default is none/very low. | [53] |
| Groin strain | medium | A pulled or irritated groin muscle, often felt in cutting, sprinting, or kicking movements. | Combat sports commonly involve sprint-like hip actions (kuzushi, entry, and sudden leverage movements) that can stress adductors/iliopsoas. While judo epidemiology often highlights knee/shoulder/hand as top locations, groin strains are plausible and not rare, so medium. | [55] |
| Hip flexor strain | medium | A strain or overload in the front-of-hip muscles that help lift the leg. | Hip flexion is stressed frequently by gripping/entry mechanics and sudden changes during grappling exchanges. Even though knee/shoulder/hand often dominate injury-location data, hip-flexor strain remains a plausible and not-rare risk, so medium. | [53] |
| Side-of-hip tendon pain | low | Irritation of the hip or gluteal tendons around the outer side of the hip. | Judo injury reviews highlight knee, shoulder, and hand/fingers as frequent sites. Glute/hip tendinopathy isn’t consistently named as a top location, so risk is low. | [53] |
| Lower-back disc irritation | low | Lower-back pain that may involve irritation of a spinal disc and sometimes pain spreading into the leg. | Given overall extremity predominance in judo injury summaries, lumbar disc irritation risk is lower than knee/shoulder/hand issues. Still plausible, so low. | [67] |
| Mechanical lower-back pain | low | Common lower-back pain related to movement, loading, stiffness, or irritated supporting tissues. | Judo injury epidemiology emphasizes extremities (knee/shoulder/hand). Spine injuries exist but mechanical low back pain specifically isn’t clearly among the most common named outcomes. Low risk. | [57] [67] |
| Meniscus injury | medium | Irritation or tearing of the knee cartilage that helps cushion and stabilize the joint. | Given knee is a frequent injury location in judo and mechanisms involve twisting/valgus/forced knee positions, meniscus injury risk is meaningfully above none. However, because epidemiology summaries often emphasize general knee injury rather than meniscus specifically, risk is medium. | [57] |
| Jumper's knee (patellar tendinopathy) | medium | Pain and irritation in the tendon just below the kneecap. | Patellar tendinopathy is typically associated with repetitive high-load knee extension demands. Judo includes repeated crouching, extension, and forceful leverage/stance changes, which can stress the patellar tendon. Because it’s not always highlighted as the top judo injury diagnosis but is plausible with knee loading, medium. | [57] [69] |
| Front-of-knee pain (patellofemoral pain) | medium | Pain around or behind the kneecap that often flares with repetitive knee bending. | Because knee injuries and knee loading are common in judo, patellofemoral pain is plausible at a moderate level. Again, it’s not always the single most reported diagnosis, so medium rather than high. | [57] |
| Heel pain (plantar fasciitis) | low | Irritation of the tissue under the foot that often causes pain near the heel. | Because foot/ankle injuries and pain are present in judo, plantar fasciitis is plausible. However, most judo epidemiology highlights knee/shoulder/hand more than a specific diagnosis like plantar fasciitis, so risk is low. | [53] |
| Rotator cuff irritation | medium | Pain and overload in the shoulder muscles and tendons that help control arm movement. | Shoulder is a high-frequency injury region in judo. Rotator cuff irritation is a plausible shoulder-specific issue, but without judo epidemiology that isolates rotator cuff irritation as the dominant diagnosis, risk is medium rather than high. | [57] |
| Shin splints | low | Exercise-related pain along the shin that often appears when impact load rises too quickly. | Because judo injury data highlights other sites more often and the primary sport demands differ from running, shin splints risk is lower than in high-volume impact endurance sports. So low. | [64] |
| Shoulder impingement-type pain | medium | Shoulder pain that appears when tissues feel pinched or irritated during arm elevation. | Given that shoulder is a high-frequency injury area, shoulder impingement is plausible. However, judo injury literature usually groups shoulder injuries rather than specifying impingement, so medium. | [57] |
| Shoulder instability or dislocation | low | A shoulder that has slipped out, partly slipped out, or feels unreliable in vulnerable positions. | Shoulder injuries are common, but instability/dislocation is a more specific and less frequent outcome than shoulder strain/contusion or non-specific shoulder injuries. So risk is low. | [70] |
| Back stress reaction (spondylolysis) | none | A stress injury in the back often linked to repeated extension and rotation loading. | There is insufficient evidence in the consulted judo injury literature to support that stress reaction/spondylolysis is a notable judo risk at a general moderate-participation level. | [71] |
| Tennis elbow | low | Pain on the outside of the elbow linked to overload in the wrist and forearm tendons. | Judo involves elbow/arm injury occurrences and significant gripping demands, but the strongest epidemiology emphasis is typically on knee/shoulder/hand-fingers. That makes tennis elbow a plausible but not clearly dominant common injury: low. | [53] |
| Shin bone stress injury | none | Stress irritation in the tibia from repeated impact that has outpaced recovery. | Tibial stress injuries are more classically associated with running/jumping volume. Judo injury location reports emphasize other regions, and tibial stress injuries aren’t prominent in the sources. So none (very low). | [57] |
| Wrist sprain | medium | A stretched or irritated wrist ligament, often after a fall, impact, or awkward bend. | Wrist/hand region injuries occur, and wrist sprain is plausible, but since knee/shoulder/hand-fingers dominate, wrist sprain specifically is medium. | [57] |
| Wrist tendon pain | low | Irritation of wrist tendons from repeated gripping, racquet use, lifting, or supporting body weight. | Judo shows high frequency hand/finger injuries, but wrist tendinopathy (as a diagnosis) is not clearly established as a dominant common issue in the reviewed sources. Therefore low. | [57] |
Prevention
| Factor | Value | Definition | Full reasoning | Sources |
|---|---|---|---|---|
| Achilles tendon pain (tendinopathy) | none | Pain and irritation in the Achilles tendon at the back of the ankle. | General exercise strengthens the tendon system, but judo-specific evidence showing prevention of Achilles tendinopathy (as a specific outcome) is not established. Therefore none. | [55] |
| ACL injury | low | A major ligament injury inside the knee, often linked to pivoting, landing, or sudden deceleration. | Neuromuscular/proprioceptive training is evidence-based for ACL prevention, and judo warm-ups can include ankle/knee-focused components (IPPON), which overlaps with prevention principles. However, since we are not assuming extra structured neuromuscular sessions beyond normal judo, the preventive level is low. | [59] [60] |
| Ankle sprain | low | A stretched or torn ankle ligament, usually after the foot rolls awkwardly. | There are judo injury prevention programmes (e.g., IPPON) that include exercises targeting shoulder, knee and ankle injuries, which suggests training can reduce ankle sprain risk. However, because evidence is programme-based and not simply “doing judo moderately” that alone guarantees prevention, risk-prevention effect is low rather than medium/high. | [55] |
| Calf strain | none | A pulled or overloaded calf muscle, often felt during pushing off, sprinting, or jumping. | Calf strain prevention likely depends on specific strengthening and load management; judo alone is not shown to prevent this diagnosis specifically. Default none. | [59] |
| Finger or hand impact injury | none | Pain from jamming, bending, or striking the fingers or hand during sport. | In judo prevention programme development, finger injuries may be treated as minor severity and not included, suggesting limited evidence/priority for preventing them with typical judo warm-ups. So prevention is none. | [59] |
| General forearm overuse pain | none | Ongoing forearm pain from repeated gripping, lifting, or arm use when the exact tendon is unclear. | While judo can improve general conditioning of gripping muscles, there isn’t strong sport-specific evidence that regular judo practice (at moderate frequency) reliably prevents forearm overuse pain as a distinct condition. | [53] |
| General foot or ankle pain | low | Ongoing foot or ankle pain when the exact structure or diagnosis is unclear. | Prevention evidence is strongest for programme components targeting ankle/knee/shoulder injuries. Because the prompt asks about moderate judo practice (not necessarily dedicated foot rehab), a conservative low prevention level is used. | [55] |
| General hip or groin pain | low | Ongoing hip or groin pain when the exact structure or diagnosis is unclear. | A judo-specific prevention programme targets shoulder/knee/ankle (not necessarily groin), so prevention of hip/groin pain specifically is not strongly evidenced. Still, neuromuscular training and movement practice can help lower risk somewhat, so low. | [55] |
| General knee pain | medium | Ongoing knee pain when the exact structure or diagnosis is unclear. | Judo training repeatedly challenges knee stability and neuromuscular control, which generally supports knee injury risk reduction via better control and strength. Because judo also carries high knee injury exposure, the net prevention effect from moderate training is significant but not assured; hence medium rather than high. | [65] |
| General lower-back pain | none | Ongoing lower-back pain when the exact source is unclear. | Without robust judo-specific prevention evidence for general lower back pain, and since technique/impact vary, keep as none. | [57] |
| General lower-leg pain | none | Ongoing shin or calf pain when the exact diagnosis is unclear. | Without direct evidence and given that judo can also cause lower-limb injuries, prevention benefit is not established. None. | [57] |
| General shoulder pain | medium | Ongoing shoulder pain when the exact structure or diagnosis is unclear. | The IPPON judo prevention programme explicitly includes shoulder-focused prevention exercises. Also, regular training improves general shoulder strength and movement control. However, the sport has high shoulder injury exposure, so prevention is medium. | [59] |
| General wrist or hand pain | none | Ongoing wrist or hand pain when the exact structure or diagnosis is unclear. | Because hand injuries appear to be common and not clearly targeted by judo prevention programmes (finger injuries excluded), prevention is none. | [59] |
| Golfer's elbow | none | Pain on the inside of the elbow linked to overload in the forearm tendons. | Sport-specific prevention evidence focuses more on broader shoulder/knee/ankle programs rather than golfer’s elbow specifically; without direct evidence, prevention is none. | [55] |
| Groin strain | none | A pulled or irritated groin muscle, often felt in cutting, sprinting, or kicking movements. | Because the best-developed judo prevention programme focus is shoulder/knee/ankle, and groin is not clearly targeted, there isn’t enough evidence to claim prevention benefit for groin strain from judo alone. | [55] |
| Hip flexor strain | none | A strain or overload in the front-of-hip muscles that help lift the leg. | Judo prevention programmes commonly target shoulder/knee/ankle rather than specifically hip flexor strain. Without direct evidence, prevention is none. | [55] |
| Side-of-hip tendon pain | none | Irritation of the hip or gluteal tendons around the outer side of the hip. | No strong judo-specific prevention evidence for this tendinopathy exists in the sources used, so default none. | [55] |
| Lower-back disc irritation | none | Lower-back pain that may involve irritation of a spinal disc and sometimes pain spreading into the leg. | No solid judo-specific prevention data for this specific diagnosis in the used sources; default none. | [59] |
| Mechanical lower-back pain | none | Common lower-back pain related to movement, loading, stiffness, or irritated supporting tissues. | No strong judo-specific prevention evidence for this diagnosis; default none. | [57] |
| Meniscus injury | low | Irritation or tearing of the knee cartilage that helps cushion and stabilize the joint. | Prevention of meniscus injury is related to controlling knee mechanics and neuromuscular function. Judo can contribute to this, and judo programmes target knee injury broadly. But because meniscus-specific prevention evidence is not directly established and technique variance exists, it’s low. | [59] |
| Jumper's knee (patellar tendinopathy) | low | Pain and irritation in the tendon just below the kneecap. | Because tendon health benefits from appropriate strengthening, judo may help some by improving general lower-limb strength. But since judo is a high knee-load sport with risk for knee issues, the prevention impact from just doing judo moderately is limited: low. | [69] |
| Front-of-knee pain (patellofemoral pain) | low | Pain around or behind the kneecap that often flares with repetitive knee bending. | General training can help reduce knee pain risk by improving neuromuscular control, but sport-specific evidence for patellofemoral pain prevention from judo alone is limited. So low. | [66] |
| Heel pain (plantar fasciitis) | none | Irritation of the tissue under the foot that often causes pain near the heel. | Plantar fasciitis prevention depends on managing load, footwear, and specific rehab. While judo may change loading patterns, there’s no judo-specific prevention evidence for plantar fasciitis in the sources used, so default to none. | [56] |
| Rotator cuff irritation | low | Pain and overload in the shoulder muscles and tendons that help control arm movement. | IPPON includes shoulder-focused exercises, implying prevention of shoulder issues broadly. But cuff irritation specifically isn’t separately quantified; thus low. | [59] |
| Shin splints | none | Exercise-related pain along the shin that often appears when impact load rises too quickly. | Default none due to lack of judo-specific shin-splints prevention evidence. | [59] |
| Shoulder impingement-type pain | low | Shoulder pain that appears when tissues feel pinched or irritated during arm elevation. | IPPON targets shoulder injury prevention broadly. Impingement prevention is related to scapular control and rotator cuff strength, which likely overlap with those programmes. But without direct impingement-specific judo outcomes, set to low. | [59] |
| Shoulder instability or dislocation | low | A shoulder that has slipped out, partly slipped out, or feels unreliable in vulnerable positions. | Shoulder injury prevention programmes in judo (IPPON) likely improve shoulder stability. However, instability prevention requires specific conditioning and is not guaranteed by moderate judo practice alone. Thus low. | [59] |
| Back stress reaction (spondylolysis) | none | A stress injury in the back often linked to repeated extension and rotation loading. | Default none due to absence of supportive judo-specific prevention evidence. | [59] |
| Tennis elbow | none | Pain on the outside of the elbow linked to overload in the wrist and forearm tendons. | Judo injury-prevention research and programmes emphasize shoulder/knee/ankle; without direct evidence for lateral epicondylitis prevention via judo, prevention is none. | [55] |
| Shin bone stress injury | none | Stress irritation in the tibia from repeated impact that has outpaced recovery. | Default none due to lack of supportive evidence. | [59] |
| Wrist sprain | none | A stretched or irritated wrist ligament, often after a fall, impact, or awkward bend. | Finger/hand injuries may not be prioritized in formal judo prevention programmes, and without direct evidence, prevention is none. | [59] |
| Wrist tendon pain | none | Irritation of wrist tendons from repeated gripping, racquet use, lifting, or supporting body weight. | Default none due to lack of judo-specific tendinopathy prevention evidence for the wrist. | [59] |
Heal
| Factor | Value | Definition | Full reasoning | Sources |
|---|---|---|---|---|
| Achilles tendon pain (tendinopathy) | none | Pain and irritation in the Achilles tendon at the back of the ankle. | Healing tendinopathy typically depends on well-dosed loading; judo alone doesn’t guarantee that dosing is appropriate. Without evidence that regular judo participation reliably speeds Achilles tendinopathy recovery, set to none. | [56] |
| ACL injury | none | A major ligament injury inside the knee, often linked to pivoting, landing, or sudden deceleration. | ACL injury recovery (especially for torn ACL) typically involves structured rehabilitation and often surgical decisions; normal judo participation is not established as a healing aid. Therefore none. | [60] |
| Ankle sprain | none | A stretched or torn ankle ligament, usually after the foot rolls awkwardly. | Healing from sprains typically requires a graded return and load management; judo without explicit rehab modification could aggravate it. Since we’re not assuming extra rehab outside normal sport, and no clear evidence indicates that regular judo practice itself speeds ankle-sprain healing, set to none. | [53] |
| Calf strain | none | A pulled or overloaded calf muscle, often felt during pushing off, sprinting, or jumping. | No evidence supports that normal judo participation heals calf strains without targeted rehab and appropriate load reduction. Therefore none. | [57] |
| Finger or hand impact injury | none | Pain from jamming, bending, or striking the fingers or hand during sport. | No evidence supports that normal judo practice heals hand impact injuries; continued use can also exacerbate. Default none. | [57] |
| General forearm overuse pain | none | Ongoing forearm pain from repeated gripping, lifting, or arm use when the exact tendon is unclear. | There is not enough direct evidence that continuing judo (without extra rehab tailoring) speeds healing of forearm overuse pain; for overuse conditions, continued exposure can be either therapeutic (if load is appropriate) or aggravating, and judo-grip demands make a positive effect uncertain. | [53] |
| General foot or ankle pain | none | Ongoing foot or ankle pain when the exact structure or diagnosis is unclear. | No direct evidence supports that regular judo practice itself reliably heals general foot/ankle pain without tailored load modification. Therefore none. | [53] |
| General hip or groin pain | none | Ongoing hip or groin pain when the exact structure or diagnosis is unclear. | Without assuming extra rehab or pain-modified training strategies, there’s no strong evidence that normal judo participation helps healing for general hip/groin pain; therefore none. | [53] |
| General knee pain | low | Ongoing knee pain when the exact structure or diagnosis is unclear. | Without assuming targeted rehab, judo’s repetitive knee loading makes a consistent healing benefit uncertain. Still, gradual return to sport after appropriate pain moderation can support recovery for some musculoskeletal issues. So low. | [66] |
| General lower-back pain | none | Ongoing lower-back pain when the exact source is unclear. | No evidence supports judo as a healing therapy for general lower back pain without tailored modifications, so none. | [57] |
| General lower-leg pain | none | Ongoing shin or calf pain when the exact diagnosis is unclear. | No evidence indicates judo itself heals general lower-leg pain without modification; therefore none. | [57] |
| General shoulder pain | low | Ongoing shoulder pain when the exact structure or diagnosis is unclear. | Given high shoulder loading in judo, there’s uncertainty about healing benefit from continued normal training. Without assuming rehab modifications, healing benefit is limited: low. | [59] |
| General wrist or hand pain | none | Ongoing wrist or hand pain when the exact structure or diagnosis is unclear. | Without evidence that normal judo helps healing of wrist/hand pain (and given high exposure), set to none. | [57] |
| Golfer's elbow | none | Pain on the inside of the elbow linked to overload in the forearm tendons. | There’s no clear evidence that regular judo practice (without targeted elbow-tendon load modification) improves golfer’s elbow recovery, so it defaults to none. | [55] |
| Groin strain | none | A pulled or irritated groin muscle, often felt in cutting, sprinting, or kicking movements. | No direct evidence supports that regular judo practice (without dedicated groin rehab and without altering intensity) speeds groin-strain recovery. Therefore none. | [53] |
| Hip flexor strain | none | A strain or overload in the front-of-hip muscles that help lift the leg. | Without targeted rehab and load modification, continued judo is not established as a healing aid for hip flexor strain; therefore none. | [53] |
| Side-of-hip tendon pain | none | Irritation of the hip or gluteal tendons around the outer side of the hip. | Because the prompt disallows assuming extra rehab modifications, and there’s no direct evidence that continuing judo improves glute/hip tendinopathy recovery, set to none. | [68] |
| Lower-back disc irritation | none | Lower-back pain that may involve irritation of a spinal disc and sometimes pain spreading into the leg. | Without assuming tailored rehab, there’s no evidence that continued judo heals lumbar disc irritation; so none. | [67] |
| Mechanical lower-back pain | none | Common lower-back pain related to movement, loading, stiffness, or irritated supporting tissues. | Without targeted back-specific rehab or pain-guided modification, the healing effect is uncertain. Default to none. | [57] |
| Meniscus injury | none | Irritation or tearing of the knee cartilage that helps cushion and stabilize the joint. | Meniscus healing (especially if torn) usually requires medical-guided rehab and load modification. Regular judo practice alone is not evidence-based as a healing therapy, so none. | [57] |
| Jumper's knee (patellar tendinopathy) | low | Pain and irritation in the tendon just below the kneecap. | Tendinopathy often responds to progressive loading, but judo does not ensure the tendon-friendly dosing that rehab protocols use. Therefore a small possible positive effect: low. | [69] |
| Front-of-knee pain (patellofemoral pain) | none | Pain around or behind the kneecap that often flares with repetitive knee bending. | Without assuming targeted rehab or pain-monitoring modifications, continued judo doesn’t have established healing benefit for patellofemoral pain; therefore none. | [57] |
| Heel pain (plantar fasciitis) | low | Irritation of the tissue under the foot that often causes pain near the heel. | Plantar fasciitis commonly improves with load management and high-load progressive strengthening in clinical research. However, judo isn’t the same as a plantar-specific rehab plan, so healing benefit is limited/uncertain: low rather than medium/high. | [56] |
| Rotator cuff irritation | none | Pain and overload in the shoulder muscles and tendons that help control arm movement. | No direct evidence shows that normal judo practice reliably speeds rotator cuff irritation healing without tailored load modification. Therefore none. | [57] |
| Shin splints | none | Exercise-related pain along the shin that often appears when impact load rises too quickly. | No evidence that normal judo participation heals shin splints without load modification; thus none. | [64] |
| Shoulder impingement-type pain | none | Shoulder pain that appears when tissues feel pinched or irritated during arm elevation. | No evidence supports that normal judo practice (without impingement-modified training) improves healing; therefore none. | [57] |
| Shoulder instability or dislocation | none | A shoulder that has slipped out, partly slipped out, or feels unreliable in vulnerable positions. | Instability recovery generally needs targeted rehab and sometimes surgery; normal judo practice isn’t evidence-based as a healing method. Therefore none. | [57] |
| Back stress reaction (spondylolysis) | none | A stress injury in the back often linked to repeated extension and rotation loading. | Without evidence that continued judo heals spondylolysis/stress reactions, and given the need for load modification, set to none. | [72] |
| Tennis elbow | none | Pain on the outside of the elbow linked to overload in the wrist and forearm tendons. | Without specific rehab/load-modification guidance, continued judo could either help via gradual loading or hinder via ongoing irritation. Because there’s no clear evidence of a consistent healing benefit from just “doing judo,” this is none. | [53] |
| Shin bone stress injury | none | Stress irritation in the tibia from repeated impact that has outpaced recovery. | No evidence that regular judo practice speeds tibial stress injury healing without load modification; therefore none. | [57] |
| Wrist sprain | none | A stretched or irritated wrist ligament, often after a fall, impact, or awkward bend. | No evidence supports that regular judo participation speeds wrist-sprain healing; with continued exposure risk, default none. | [57] |
| Wrist tendon pain | none | Irritation of wrist tendons from repeated gripping, racquet use, lifting, or supporting body weight. | Without assuming specific rehab progression, no evidence indicates judo alone heals wrist tendinopathy; therefore none. | [69] |
Past-sport transfer logic
| Past sport | Average correlation (success) | Std dev | Correlation reasoning | Correlation sources |
|---|---|---|---|---|
| american-football-defensive-back | 0.13 | 0.1 | Carry-over from American football defensive back success to judo success should be weakly positive but far from strong. The overlap is mainly general athletic qualities relevant to combat sports—explosive movement, timing, and remaining coordinated under physical pressure. However, judo is dominated by highly specific grappling and throwing technique (grip fighting, off-balancing, leverage-based throw mechanics, and clinch-to-throw timing), plus different movement constraints than open-field pursuit. Those specificity gaps keep the correlation low, with substantial variability depending on prior martial arts exposure and how quickly an athlete learns judo’s grips and leverage mechanics. | [73] [74] [75] [76] |
| american-football-line-player | 0.32 | 0.14 | We compare **PAST:** American football **line player** success (mass, leverage, power, short-area force; repeated collisions; operating in chaotic, opponent-driven contacts) to **FUTURE:** **judo** success (throwing/grappling with off-balancing, leverage, explosive exchanges; plus grip control and tactical timing). **Why correlation is positive (pushes r up):** - Combat sports and football line roles share *contact-duel logic*: winning space via leverage, body positioning, and strength/power under constraint. - Combat-sport research highlights perceptual-cognitive components (perception–action coupling, anticipation/decision making) that plausibly generalize from opponent-driven sports environments. ([sciencedirect.com](https://www.sciencedirect.com/science/article/pii/S146902921830668X?utm_source=openai)) - Judo performance is linked to physiological and performance variables in addition to technique, so some of the physical base from football line play should carry over. ([tandfonline.com](https://www.tandfonline.com/doi/abs/10.1080/24748668.2023.2238166?utm_source=openai)) **Why correlation isn’t high (pulls r down):** - Judo’s dominant determinants are sport-specific: grips, off-balancing/entry timing, throwing mechanics, and (for many matches) new transition skills (takedown → ground control). - Transfer theory predicts only partial predictability when the action system/affordances differ substantially between sports (football engagement mechanics vs judo grip-and-throw exchanges). ([sciencedirect.com](https://www.sciencedirect.com/science/article/abs/pii/S2468781225000797?utm_source=openai)) **Bayesian point estimate:** moderate-positive baseline from shared leverage/contact + perceptual decision demands, discounted for major judo-specific action-system learning → **r ≈ 0.32** with **std ≈ 0.14**. | [77] [78] [79] [80] |
| american-football-linebacker-tight-end | 0.26 | 0.12 | Linebacker/tight end success should correlate moderately with judo success because both are contact-heavy, leverage-based competitive roles that require rapid balance disruption, explosive positional changes, and strong whole-body coordination under physical pressure. However, judo is highly technique-specific: success depends on judo grips, kuzushi (off-balancing), throw setup/entry timing, and grappling control sequences (including scrambles and mat transitions). Those are not the main limiting factors in linebacker/TE performance, where the dominant skills are tackling/blocking leverage and reading plays. So overall carryover is positive but capped: athletic contact toughness and body control transfer meaningfully, but judo-specific technique and repetition dominate outcomes. | [81] [82] [83] |
| american-football-quarterback | 0.26 | 0.15 | Define success correlation as: QB success (past) → probability of being successful in judo (future), disregarding body-size traits. Increase-correlation components: - **Perceptual-cognitive skill under uncertainty**: QBs repeatedly read opponents and make rapid decisions from early cues; judo success also relies on anticipation and timing. - **General perceptual-motor foundations**: combat-sport research links hand–eye coordination and movement reaction time to performance-relevant differences; QB experience can provide a baseline for fast visuomotor responses. - **Competitive learning habits**: QBs are in a high-feedback environment with complex play understanding, which can accelerate learning of judo timing/decision rules. Decrease-correlation components: - **Large motor/technique mismatch**: judo’s core motor patterns (grip fighting, off-balancing, throws, leverage mechanics) are highly sport-specific and not learned from QB play. - **Different opponent-interaction structure**: QB is predominantly projectile/limited physical contact; judo is continuous grappling and requires different balance, grip, and whole-body leverage mechanics. Bayesian synthesis: start with a modest baseline for far-ish transfer between a tactical collision field role and a highly discipline-specific grappling sport (~0.18–0.23). Then increase slightly because combat-sport literature supports that visuomotor/perceptual components (reaction time, hand–eye coordination, anticipation) matter and are partially shared with QB’s information-processing demands. Cap below high levels due to the major judo-specific technical bottleneck. Posterior mean ~0.26 with std dev ~0.15 to reflect substantial variance by (a) whether the QB’s success was driven mainly by cognition/processing vs pure arm/throwing skill/athleticism, and (b) how quickly they acquire grips and throw setups. | [84] [85] [86] [87] [88] |
| american-football-receiver-running-back | 0.13 | 0.09 | Receiver/running back performance should correlate slightly with judo success because both benefit from (1) explosive power and rapid acceleration into an exchange, (2) balance and ability to stay coordinated while being contacted/contested, and (3) reading opponents’ body movement and reacting quickly. However, judo is heavily determined by specialized technical training: grip fighting and sleeve/gi control, precise off-balancing (kuzushi), throw mechanics and timing, breakfall technique, and tactical transitions in a grappling-rule environment. WR/RB roles rarely train these core judo skills. So the carry-over should remain modest (around the low-to-mid 0.1 range) with meaningful uncertainty. | [89] |
| athletics-distance | 0.06 | 0.03 | Distance running (at a successful level) should provide only a small advantage for later judo success: endurance for repeated high-effort sequences, better pacing/recovery between exchanges, and comfort with sustained discomfort. But judo performance is dominated by sport-specific technical learning (grip fighting, off-balancing, leverage, explosive hip/leg timing, and scrambling). Because there is minimal direct technique overlap between distance-running mechanics and judo throwing/grappling, the expected correlation is low but positive, with moderate uncertainty reflecting that some distance runners adapt well to grappling conditioning while others struggle with explosive timing and technical learning curves. | [90] |
| athletics-jumps-high-jump | 0.13 | 0.09 | High-jump success should show a modest positive relationship with judo success. The overlap is mostly in general athletic capacities that are technique-adjacent for grappling: elastic leg power, coordination, and body control that can help with generating explosive entries and stabilizing during throw setups and recovery movements. However, judo is dominated by highly specific technical and tactical skills—grip fighting, off-balancing (kuzushi), leverage angles, and throw/transition sequencing under resistance—which are largely not trained by high jump. Because of that mismatch (and the adversarial open-skill nature of judo), the correlation is expected to be small-to-modest and variable across athletes. | [91] [92] [93] |
| athletics-jumps-long-triple-jump | 0.12 | 0.1 | Long jump/triple jump performance is a good signal of explosive lower-body power, elastic recoil, and coordinated timing, which can modestly help a beginner in judo for explosive entries, sudden direction/stance changes, and force generation in throw attempts. However, judo is highly dependent on sport-specific grappling skills—grip fighting, leverage and off-balancing timing, kuzushi, precise body positioning, breakfalls, and throws learned through repeated resistance. Because these key technical elements are largely non-overlapping with jumping training, the expected carry-over should be small but positive, with substantial uncertainty between individuals. | [94] [95] [96] |
| athletics-jumps-pole-vault | 0.1 | 0.08 | Pole vault success should correlate slightly with judo success due to shared general qualities: explosive leg power, coordination, balance, and the ability to re-stabilize quickly after dynamic movements. However, judo is dominated by sport-specific skills—grip work, off-balancing/kuzushi timing, throw setups, and grappling tactics—largely absent from pole vault training. Therefore the expected average carryover is low-to-modest (around ~0.05–0.18), centered near ~0.10 with moderate variance depending on whether the athlete also has prior grappling/throwing experience. | [97] [98] [99] |
| athletics-middle-distance | 0.09 | 0.05 | Athletics middle distance and judo share limited direct technical overlap. Middle distance is largely driven by aerobic pacing and running economy, whereas judo depends mainly on grip fighting, off-balancing, leverage/throw-entry timing, and grappling positional control. Carry-over is therefore mostly indirect (general athletic coordination, conditioning, effort tolerance, and motor-learning ability). This yields a small but slightly positive expected correlation around ~0.09, with moderate uncertainty. | [100] [101] [102] [103] [104] |
| athletics-sprints-hurdles | 0.12 | 0.08 | Sprints and hurdles can transfer some technique-relevant components to judo—especially explosive acceleration, stiffness/power generation, and the ability to execute rapid high-intensity actions during brief exchanges. That creates a small-to-modest positive correlation. However, judo success is dominated by grappling/takedown mechanics: gripping strategy, off-balancing (kuzushi), throw setups, leverage timing, and adaptability to an opponent’s resisting forces. Those are not trained in sprint/hurdle events, so the carry-over should remain limited, with substantial variance across individuals (e.g., those who also trained martial arts basics would show higher correlation). | [105] [106] [107] |
| athletics-throws-discus | 0.23 | 0.08 | Discus success reflects rotational strength, leverage concepts, hip–shoulder sequencing, rhythm/timing, and efficient whole-body force transfer into a fast ballistic release. Judo throws and off-balancing techniques also depend on leverage, disrupting an opponent’s balance, and producing explosive force via coordinated whole-body movement (often starting with the hips/trunk). That creates meaningful overlap in underlying “power + coordinated force + leverage” ingredients, so a noticeable positive correlation is plausible. However, the biggest determinants in judo are contact-specific and skill-specific: gripping and posture control, off-balancing timing against a resisting opponent, kuzushi, and breakfall/takedown entries. Those are not trained by discus throwing in the same way, so the transfer cannot be very high. A realistic Bayesian estimate is therefore moderate, around 0.23 with std dev ~0.08 depending on how much the athlete also does combat sports/training alongside discus. | [108] [109] [110] |
| athletics-throws-hammer-throw | 0.12 | 0.07 | Hammer throw success indicates strong whole-body coordination, rotational mechanics, dynamic balance under turning, and efficient generation of force. These skills can translate somewhat into judo, which also rewards leverage use, explosive exchanges, and staying balanced while applying force. But judo performance is heavily determined by interactive grappling skills—grip fighting, off-balancing timing, positional control, and throws executed under live contact and rules. Hammer throw’s rotational implement mechanics do not teach these grips/read-and-react mechanics. Net result: a modest positive correlation, not high. | [111] [112] |
| athletics-throws-javelin | 0.27 | 0.12 | Javelin and judo share meaningful “technique-level” components beyond raw power: (1) generating force quickly through a coordinated kinetic chain (legs → trunk → shoulder/arm), (2) applying leverage and body-positioning to maximize output, and (3) timing explosive actions precisely. That creates a moderate positive relationship. But judo’s dominant determinants are grappling-specific: grip fighting, establishing control, off-balancing an opponent’s base, executing kuzushi-based throw mechanics under constrained grips, and preventing counters while maintaining safety and balance. These are not directly trained by javelin. So the carry-over is positive but not high—typically around the high-0.2s to low-0.3s on average. | [113] |
| athletics-throws-shot-put | 0.22 | 0.12 | Shot put success indicates strong whole-body maximal-force production, trunk bracing, balance control, and efficient hip-to-trunk power transfer. Those attributes plausibly transfer to judo because many judo techniques (and resisting) rely on leverage, explosive commitment during exchanges, and using the kinetic chain effectively. However, judo performance is heavily driven by combat-specific perceptual-motor skills: grip fighting, timing of kuzushi (off-balancing), managing distance with an opponent, and learning throws within constraint-rich clinch interactions. Shot put does not train these opponent-interaction mechanics. Therefore, carryover should be positive but only moderate, with meaningful scatter depending on how quickly the athlete acquires judo-specific grips, timing, and tactical skills. | [114] [115] [116] [117] |
| badminton | 0.05 | 0.04 | Badminton should have a modest positive but low correlation with judo success. Shared technical ingredients include fast reaction to a moving opponent/object, excellent dynamic balance, coordinated footwork, and the ability to re-position quickly. However, judo is dominated by highly specific grappling skills: gripping and controlling the opponent’s gi, precise kuzushi (off-balancing) and throw mechanics, mat positioning, and tactical sequences under resistance—none of which badminton directly trains. Therefore the expected correlation should be small (~0.01–0.09), centered around ~0.05. | [118] |
| baseball-catcher | 0.09 | 0.06 | Baseball catcher success should have a small positive relationship with judo success due to shared general athletic-skill components: (1) rapid visual scanning and reacting to changing situations, (2) coordination of upper/lower body for quick, repeatable technical actions from a low stance, (3) maintaining composure and structured movement under high tempo/pressure. However, judo performance depends heavily on grappling-specific and throw-specific technique: grip control, breaking posture, footwork for off-balancing, hip/shoulder leverage mechanics, timing of entry/turning, and the ability to flow through throws into safe landings and transitions. Catcher-specific skills (receiving/blocking pitches, throwing to bases, framing/communication) do not directly train these mechanics. Thus, carryover is expected to be modest at best: some catchers may adapt quickly because they learn movement patterns well and are mechanically coordinated, but the predictive power of catcher success for judo is limited. Variance should be moderate because background athleticism/motor-learning ability will differ across individuals. | [119] |
| baseball-field-player | 0.08 | 0.07 | Baseball field players can transfer some broad athletic skills to judo: quick reaction to changing action, good body coordination, and the ability to stay composed and learn under live pressure. However, judo performance is dominated by grappling-specific technique: grips, kuzushi/off-balancing mechanics, throw entries/executions, transitions to pins/submissions, and fall safety (ukemi). These are largely absent from baseball fielding training. So the relationship should be small and variable—near zero for athletes who don’t also train grappling/strength/power through throws and contact, and somewhat higher for those already comfortable with impact, leverage concepts, and learning martial arts quickly. A plausible estimate is ~0.08 average with ~0.07 standard deviation. | [120] [121] |
| baseball-pitcher | 0.09 | 0.06 | Pitcher → judo should have a small positive correlation at most. Overlap comes from general technical learning habits: pitchers repeatedly execute a coordinated, high-intensity motion with precise timing under pressure. That can help for initial adaptation to explosive entries and body-sequencing. But judo’s core skills are highly specific: grip fighting, off-balancing mechanics in live clinch/grappling, throws using leverage/body positioning, and defense against being thrown—none of which are trained in pitching. Therefore technique carryover is limited. Excluding body-proportion traits, a plausible average is around ~0.09 with moderate uncertainty. | [122] [123] [124] |
| basketball-big | 0.11 | 0.06 | The expected correlation from basketball Big to judo is small but positive. Shared components include general athleticism, balance under contact, and the ability to generate force quickly in close-range, high-chaos exchanges. However, judo’s outcome is dominated by sport-specific skills—grip/control, leverage-based off-balancing, and precise throwing/ground transitions—that basketball Big does not develop as a core technique system. Therefore the carry-over remains low (~low tenths). | [125] [126] |
| basketball-guard | 0.08 | 0.07 | Basketball guards and judo practitioners share some transferable components: balance, coordinated movement, quick explosive changes of direction/tempo, and the ability to learn in a dynamic, pressure-filled environment. However, judo success is dominated by judo-specific technique: grip fighting, off-balancing (kuzushi), throw entry timing, leverage chains, and safe falling (ukemi). Those mechanics are not meaningfully trained in basketball guard play. Thus the carryover should be small positive with substantial uncertainty, driven mostly by general athletic coordination and learning rate rather than direct technique overlap. | [127] [128] |
| basketball-wing | 0.07 | 0.06 | Basketball wing success should have only a small positive correlation with later judo success because there is limited overlap in technique: judo is dominated by gripping, leverage, off-balancing, and throw/grappling control that basketball doesn’t teach. The carry-over comes mostly from general athletic traits (balance, explosive coordination) and some reactive anticipation. Estimated mean ~0.07 with uncertainty ~0.06. | [129] [130] [131] [132] |
| boxing | 0.62 | 0.18 | Boxing should have a strong positive correlation with judo success because both are combat sports with significant overlap in transferable “combat athletics” skills: reading an opponent, managing distance/entry timing, maintaining balance while being pressured, and executing under stress. Those factors influence how quickly an athlete can learn to create engagement opportunities in judo. However, the correlation is not near-perfect because judo’s key technical primitives are fundamentally different: grips, off-balancing (kuzushi), throw execution, and breakfalls/ground transitions. Boxing trains striking and defensive positioning, not the specific grappling mechanics. Therefore we expect a fairly high average correlation with substantial individual variation depending on how well someone adapts to grips/throws and falling safety. | [133] [134] [135] [136] [137] |
| climbing-bouldering | 0.18 | 0.1 | Bouldering success relates to strong body tension/bracing, balance/proprioception, and the ability to produce force quickly while maintaining control in awkward, high-load positions. Those elements provide a meaningful foundation for judo: grips, off-balancing, and explosive transitions often rely on body control and leverage. However, judo performance is dominated by sport-specific determinants: judo grip fighting and hand/arm positioning, throw entries and hip-rotation mechanics, timing within explosive exchanges, and the adaptive decisions made against a resisting opponent. Bouldering does not train those opponent-coupled mechanics directly. Therefore the carryover should be noticeably positive but far from perfect, with substantial person-to-person variability depending on whether their bouldering success included very dynamic movement and whether they adapt quickly to live grappling constraints. | [138] [139] [140] |
| climbing-lead | 0.18 | 0.08 | Lead climbing success depends on movement economy, balance/proprioception, and keeping precise body positioning while forearms/grip fatigue and pump discomfort rise. Judo success relies on sport-specific gripping and grip-fighting, off-balancing timing, throw/sweep technique (hip/shoulder/leg sequencing and leverage against an opponent), and rapid opponent-reactive decision-making. The overlap is mainly general: (1) body control and balance, (2) maintaining coordination under discomfort/fatigue, and (3) the ability to learn and refine complex motor skills through feedback. Because the interaction is very different (climbing uses friction/holds; judo uses opponent movement and leverage exchanges), most of the critical “how to win” mechanics are not shared. So a modest positive correlation is realistic but not large. A reasonable Bayesian-style estimate is ~0.18 with std dev ~0.08, reflecting variability depending on whether the climber also has combat-sport exposure or transferable explosive/strength training. | [141] |
| climbing-speed | 0.2 | 0.1 | Speed climbing performance is a good indicator of explosive force production, precise body tension/bracing, and the ability to execute repeatable high-intensity movements quickly. Judo also features brief, high-power exchanges: entering, gripping, off-balancing (kuzushi), and explosive throw execution. That shared “explosive burst with coordination and body control” creates a meaningful positive correlation. However, most of judo’s determinants are highly technique- and context-specific: grip fighting, leverage application, throw mechanics timing, and reacting to an opponent’s defenses. Those have low overlap with speed climbing’s hold-to-hold vertical sprint mechanics. Therefore correlation should not be high. A realistic estimate is moderate (~0.15–0.25), centered around ~0.20. | [142] [143] [144] |
| cricket-all-rounder | 0.07 | 0.06 | Cricket all-rounder success may transfer a small amount of general balance, coordination, and competitive composure to judo. However, judo is extremely technique-specific: gripping, throw mechanics, leverage timing, and safe falling/breakfall skills are not trained in cricket. With physical/strength/leveraging confounds excluded, the remaining skill/mentality overlap is small, so the expected correlation is low positive (~0.07). | [145] [146] [147] [148] [149] |
| cricket-batter | 0.12 | 0.08 | Cricket batter performance is associated with hand–eye coordination, timing/anticipation, and stable lower-body control during repeatable whole-body actions. Judo success depends heavily on grappling-specific motor skills: grip fighting, off-balancing (kuzushi) mechanics, throw execution with correct body positioning and leverage, and safe, rule-based transitions between standing exchanges and groundwork. The overlap is mostly general: balance, body control, and the ability to learn and execute coordinated movements under competitive pressure. Also, judo includes explosive engagement and reactive timing during clinch/grip exchanges, which can benefit from an athlete who is already perceptive and coordinated. However, the dominant learned motor patterns are fundamentally different (striking with a bat vs grappling/throw mechanics). Therefore the correlation should be positive but modest, likely around the low-to-mid 0.1 range with significant scatter. | [150] |
| cricket-bowler | 0.1 | 0.08 | Cricket bowler → judo provides a modest positive correlation. The main boost comes from transferable “explosive timing + leverage/off-balance concept” and the general ability to generate force in repeated, well-sequenced attempts under pressure. However, the dominant learned motor skills differ: cricket bowling is an overarm projectile delivery with different kinetic chain mechanics, while judo success depends heavily on grips, contact-based off-balancing, takedown/throw mechanics, and grappling control. This motor-program mismatch caps the correlation well below high values. A Bayesian point estimate around 0.10 with std dev ~0.08 is consistent with “some transferable explosive timing/leveraging mindset, but limited technique mapping.” | [151] [152] [153] [154] [155] |
| cricket-wicketkeeper | 0.09 | 0.08 | Cricket wicketkeeper success should have a small positive relationship with judo success because both involve fast reaction timing, visual anticipation, and maintaining balance while moving quickly. However, judo is dominated by grappling-specific technique—grip fighting, off-balancing, throw setups/entries, and control mechanics—which are not developed by wicketkeeping. Therefore the expected carryover is modest and near the low end. | [156] [157] [158] [159] |
| cycling-mountain-bike-cross-country | 0.1 | 0.08 | Mountain bike cross-country should have a small positive correlation with future judo success when ignoring body-size traits. The carry-over is mostly general athletic: balance/proprioception, coordination, and the ability to stay composed and work hard through fatigue. However, judo performance is dominated by very specific grappling skills—grip fighting, off-balancing (kuzushi), throw mechanics and timing, and transitions to pins/submissions. MTB XC does not meaningfully train these, so the expected relationship stays low rather than moderate. | [160] [161] [162] |
| cycling-road-climber | 0.07 | 0.08 | A cycling road climber’s strengths come from sustained aerobic power-to-weight, efficient force production, and pacing. Judo requires highly specific grappling and throw-related skills—grip fighting, off-balancing, leverage timing, and repeated explosive exchanges in close contact. Because these technical components have limited overlap with cycling climbing, direct carry-over is small. There is some indirect benefit from conditioning and relative strength that can help a beginner judo athlete train and recover, but the mismatch in explosive, contact-based technique keeps the expected correlation low (near ~0.07) with substantial variability depending on prior combat exposure. | [163] [164] [165] [166] |
| cycling-road-sprinter | 0.13 | 0.09 | Cycling road sprinter success should have a weak positive relationship with judo success when focusing on technique/skill and excluding physique traits. Some transfer is plausible through conditioning, explosive intent, and comfort with repeated hard exchanges. However, judo outcomes are dominated by sport-specific leverage/grip/throw mechanics and grappling timing with very limited overlap to cycling sprint mechanics. Therefore the expected carry-over is small (around 0.13) with moderate uncertainty (std dev ~0.09). | [167] [168] [169] [170] |
| cycling-road-time-trialist | 0.12 | 0.1 | Cycling road time-trialist success should have a **small positive** relationship with judo success. Shared elements include general physical robustness (lower-body strength base), the ability to tolerate hard work for multiple rounds, and disciplined training habits. However, judo is dominated by highly sport-specific technical skills: grip fighting, off-balancing (kuzushi), throw entry/rotation timing, and reactive grappling movement under contact. Cycling TT does not develop those perceptual-motor patterns, so most of the variation in judo performance should be unrelated to cycling TT performance. This yields a modest average correlation with fairly high individual variability (higher for athletes with prior grappling/judo/kickboxing background). | [171] [172] [173] |
| cycling-track-endurance | 0.12 | 0.07 | Cycling endurance should have a modest positive correlation with later judo success. The shared part is mainly general athletic preparation: being able to train hard for long periods, maintain coordination under fatigue, and having a lower-limb strength/force foundation that helps with explosive movement initiation. But judo is dominated by grappling-specific technique: grip and sleeve control, off-balancing, leverage/positioning, throw set-ups and timing (hip/foot placement), and safe falling (ukemi). Those technical and perceptual skills have limited overlap with track endurance cycling. So the correlation should be small-to-modest—plausibly in the ~0.06–0.18 range with an average around 0.12 and moderate uncertainty. | [174] |
| cycling-track-sprint | 0.17 | 0.16 | Cycling track sprint success should have a modest positive technique-independent carry-over into judo because both value explosive force and the ability to perform high-intensity bursts repeatedly. However, judo’s defining determinants are grappling-specific technical skills (grip fighting, leverage, off-balancing, throw mechanics, and reactive timing to an opponent), which cycling sprinting does not develop. Therefore the expected carry-over is small-to-moderate, plausibly ~0.17, with substantial uncertainty (~0.16) depending on how much additional grappling/hand-fighting practice the athlete has outside cycling. | [175] [176] [177] |
| fencing-epee | 0.17 | 0.1 | Epee-to-judo is expected to be moderately positive but not high. The overlap is in “combat problem solving”: reading an opponent’s intentions, timing actions, and coordinating whole-body footwork/reactivity during exchanges. A strong epee background often produces good situational awareness and controlled timing, which can help early judo learning and decision-making (e.g., when to enter, disengage, or initiate a grip-based action). However, judo performance is dominated by grappling-specific mechanics: gripping and hand-fighting, off-balancing (kuzushi), throw entries/rotation patterns, and sustained scramble skills under different body-contact rules. Those tool-and-body-contact demands are not trained in epee. Therefore the correlation should be limited, with moderate scatter—estimated around ~0.17 with a standard deviation near ~0.10. | [178] [179] [180] |
| fencing-foil | 0.33 | 0.22 | Foil fencing should have a moderately positive correlation with judo success because both involve high-pressure opponent interaction where technique-neutral skills like distance/timing judgment, reading an opponent’s intention, explosive action initiation, and composure under repeated bouts transfer well enough to improve learning speed and early performance. The ceiling is limited and variance is large because judo performance is dominated by grappling- and throw-specific mechanics: establishing grips, generating off-balancing, executing hip/shoulder/leg throw mechanics, and controlling transitions to groundwork. Foil’s lunge/point-control and non-contact priority logic only indirectly overlap, so fencing excellence doesn’t translate into elite judo technique without substantial re-learning. | [181] [182] [183] |
| fencing-sabre | 0.13 | 0.12 | Fencing sabre and judo are both combat sports where success depends on timing, reading an opponent, explosive initiation, and staying composed during rapid exchanges. That creates a modest positive carry-over in general tactical/neuromuscular habits. But judo performance is dominated by sport-specific technical mechanics: grip fighting, throw mechanics (hip/leg/arm leverage), breakfalls, and grappling transitions on the ground. Those skills are largely absent in fencing. Therefore the correlation should remain low-to-moderate (not near 0.3+), with sizeable uncertainty. | [184] |
| field-hockey-goalkeeper | 0.1 | 0.07 | Field-hockey goalkeeper success should correlate only modestly with judo success. Transfer exists mainly in perceptual-cognitive and body-control components: reading an opponent early, reacting quickly, and staying balanced and composed through fast exchanges. But judo’s dominant skill set is highly specific—grip fighting, leverage-driven off-balancing, throwing entries, and safe falling (ukemi). These differ substantially from goalkeeper save mechanics (stick/leg shot-stopping and goal-area positioning). Because direct technical overlap is limited, the expected correlation stays low-to-modest and varies widely depending on how transferable an athlete’s movement “process” is to grappling training. | [185] [186] [187] |
| field-hockey-outfield | 0.12 | 0.1 | Field-hockey outfield success should have a small-to-modest positive correlation with judo success. The shared transferable part is mostly perceptual-motor: reading an opponent, reacting quickly, maintaining composure, and coordinating whole-body movement in competitive, contact-rich situations (though in hockey contact is different and stick-based). However, judo is dominated by highly specialized grappling/throw mechanics—grip strategy, kuzushi/off-balancing, leverage and throw biomechanics, and timing on the mat—none of which are meaningfully trained by hockey outfield roles. Therefore the correlation should remain low (roughly ~0.03–0.22) with moderate uncertainty, and should not approach high transfer levels. | [188] [189] |
| golf | 0.07 | 0.05 | Golf-to-judo should have a small positive correlation. The most plausible carry-over is general technique-learning habits, focus, and composure—people who perform well in golf may acquire and refine technical skills more efficiently. However, judo performance is dominated by judo-specific mechanics: grip control, footwork, off-balancing (kuzushi), hip/leg leverage, and opponent-driven timing. These core motor patterns are not trained by golf, and judo is interactive/reactive unlike golf’s largely self-paced target striking. Therefore the correlation remains modest rather than high. | [190] [191] [192] [193] [194] |
| gymnastics-artistic | 0.16 | 0.09 | Artistic gymnastics should correlate positively with judo success because of meaningful overlap in transferable technique components: exceptional balance recovery, whole-body coordination, trunk/hip bracing, and the ability to control body position during explosive, high-force movements and landings/breaks. These help with learning throw timing, transitions, and safe breakfalls. However, judo performance is dominated by highly sport-specific determinants: grip fighting (kumi-kata), specific off-balancing (kuzushi) mechanics against resistance, correct throw entries and combinations under rules constraints, and ukemi (breakfall) technique and mat positioning. Artistic gymnastics does not train these grappling-specific systems directly. Therefore carryover should be modest rather than high. | [195] [196] [197] |
| gymnastics-rhythmic | 0.07 | 0.06 | Rhythmic gymnastics should correlate positively with judo success through transferable prerequisites: excellent balance, proprioception, and fluid whole-body control. These help athletes maintain posture, recover from destabilization, and move efficiently when their center of mass is being attacked—core requirements in throwing and grappling exchanges. However, judo performance is dominated by judo-specific skills: grip fighting, off-balancing setups, leverage/rotation mechanics unique to throws, safe falling/breakfall timing under resistance, and positional control learned through live grappling. Rhythmic gymnastics does not provide equivalent practice for those opponent-based stimulus-response loops and grappling constraints. Therefore the expected carryover is small but positive. A plausible Bayesian mean is ~0.07 with std dev ~0.06 reflecting meaningful uncertainty due to differing martial-arts backgrounds. | [198] [199] [200] [201] |
| gymnastics-trampoline | 0.12 | 0.08 | Trampoline should show a small-to-modest positive correlation with judo success. The transferable part is largely general neuromotor skill: proprioception, balance, coordinated whole-body movement, and the ability to stabilize after dynamic body changes—useful for judo entries, maintaining posture under perturbation, and timing explosive actions. However, judo is dominated by highly sport-specific techniques and constraints: grips and grip-fighting, kuzushi mechanics, throw setups/entries, and opponent-driven decision-making during force exchanges. Since trampoline does not train those grappling-specific mechanics, the correlation should remain modest (around ~0.12) with substantial uncertainty. | [202] [203] [204] [205] |
| handball-backcourt | 0.13 | 0.09 | A positive correlation is plausible because both sports reward: (1) explosive, well-timed bursts of action, (2) coordination and body control, and (3) reading an opponent’s movement and reacting quickly. However, the technical learning is mostly different: - Handball backcourt emphasizes overarm ball throwing/release and perimeter offensive/defensive spacing. - Judo requires highly specific grappling skills: grips, kuzushi/off-balancing, hip/shoulder throw mechanics, timing in clinch, and breakfalls (ukemi). - The “collision/contact” demands exist in both, but the rules and motor patterns differ greatly. So the correlation should be modest and low-to-mid at best (~0.13) with sizable individual variability (std dev ~0.09). | [206] |
| handball-goalkeeper | 0.07 | 0.06 | Handball goalkeeper success correlates somewhat with judo via shared perceptual and behavioral demands: reacting to sudden actions, staying calm while under pressure, and possessing good body control and explosive engagement. Those factors can make learning off-balancing and explosive exchanges easier. However, judo performance is dominated by highly specific technique: grips, gripping timing, kuzushi (off-balancing), throw entries/exits, breakfall/ukemi, and grappling/ground transitions. Goalkeeper training does not meaningfully build these mechanics. Therefore the expected carry-over should be small but positive. | [207] [208] |
| handball-pivot | 0.1 | 0.06 | Handball Pivot success depends on operating in extremely tight spaces while battling bodies: creating advantage through body positioning, using leverage, maintaining balance under contact, and exploding into short actions (e.g., quick layoffs/shots) despite resistance. Judo success also depends on leverage and off-balancing, using body positioning against an opponent’s structure, and producing explosive exchanges in short bursts. That creates a transferable component: contact-tolerance, bracing/tension control, and “how to win position and disturb stability” can carry over somewhat. However, judo has dominant sport-specific technique: specific grips and hand fighting, judo throw entries/timing, kuzushi (off-balancing) patterns tied to grips, and safe falling/breakfall skills (ukemi). Pivot handball does not train these mechanics directly, so the correlation should remain modest rather than large. | [209] |
| handball-wing | 0.08 | 0.06 | Handball wing and judo overlap only in general athletic/combat-relevant abilities: quick decision-making, timing of explosive movements, and maintaining coordination/balance during high-pressure exchanges. That yields a small positive correlation. But judo requires highly specific grappling and throwing technique: grip-fighting mechanics, creating off-balance using leverage, executing throws with correct body positioning, and defending against those attacks. Handball wing training does not teach these skill systems, so the carryover should be low and variable. | [210] [211] [212] |
| ice-hockey-defenseman | 0.12 | 0.09 | Ice hockey defenseman success should have a modest positive correlation with judo success. The overlap comes mainly from transferable, non-body-type skills: staying balanced in chaotic physical situations, tolerating contact, and learning timing of engagements, plus some general explosive readiness. But judo’s decisive factors are highly sport-specific: grips, off-balancing methods, throwing mechanics, breakfalls, and grappling transitions. Hockey defense does not provide a direct technical foundation for those grappling actions. Therefore the carryover should remain low-to-modest rather than strong. Overall expectation: small but positive correlation around ~0.12 with substantial spread due to training exposure and individual adaptation. | [213] [214] [215] [216] |
| ice-hockey-forward | 0.08 | 0.06 | Ice-hockey forwards and judo share only a limited set of transferable technique-relevant learning components: balance and body control during rapid changes of direction, ability to remain coordinated under physical pressure, and some exposure to contest/space awareness. That supports a small positive correlation. But judo success is dominated by highly sport-specific skills—grip fighting, off-balancing principles, and precise throwing/transition mechanics (plus ground transitions/newaza). Hockey forward technique (skating + stick/puck handling) does not map cleanly onto these motor programs. Hence the correlation stays low rather than moderate/high. | [217] [218] [219] |
| ice-hockey-goalkeeper | 0.07 | 0.06 | Ice hockey goalkeepers train reactive defense and body control: reading an opponent’s intent, responding instantly to sudden attacks, and maintaining balance through rapid lower-body repositioning. Those traits can plausibly carry over to judo in a general way—especially for staying coordinated during explosive exchanges and quickly adjusting posture to avoid being unbalanced. However, judo success is dominated by highly specific technical skills: grip establishment and grip-fighting, off-balancing (kuzushi) mechanics, throw setup/entry and rotation timing, controlling positions during scrambles, and learning safe fall mechanics (breakfalls). Goaltending does not provide structured practice for these grappling/throwing motor patterns. Therefore the expected correlation should be modest and positive rather than high: some athletes with strong “body control under chaos” may adapt faster to judo, but many will still need to learn core grappling techniques from scratch. That yields a small mean with a relatively wide spread. | [220] |
| lacrosse-attacker | 0.1 | 0.11 | Lacrosse attacker performance should have a weak positive association with judo success primarily via general transferable qualities: comfort with physical contact, balance management, and explosiveness in close-range exchanges. However, judo depends heavily on technique-specific skills—grip fighting, off-balancing principles, throw entries, and mat/grappling transitions—which lacrosse does not directly train. Therefore the expected correlation remains low with substantial variability depending on how quickly the athlete learns judo-specific grips and throw mechanics. | [221] [222] [223] |
| lacrosse-defender | 0.1 | 0.08 | Lacrosse defender success should correlate positively—but modestly—with judo success because both reward: (1) physical contact tolerance, (2) maintaining balance and structure while being pushed/checked, (3) learning leverage/positioning instincts, and (4) staying composed during explosive exchanges. However, judo performance is dominated by technique-specific grappling and throwing skills: grips, kuzushi/off-balancing, hip/leg engagement timing, clinch mechanics, and safe breakfalls. Lacrosse defenders mainly confront opponents with stick-checking and rule-limited contact rather than full grappling and throw execution. Therefore only part of the variance transfers, keeping correlation low-to-modest. | [224] |
| lacrosse-goalkeeper | 0.1 | 0.06 | Lacrosse goalkeeper success should show a small positive correlation with judo because both benefit from fast perception, quick decision-making, staying balanced under pressure, and performing controlled explosive movements in chaotic situations. However, the core technical determinants in judo—grip fighting, off-balancing (kuzushi), leverage-based throws, and grappling transitions—are largely absent from lacrosse goalie training. This technical mismatch caps the relationship at a low, modest value (around the low double-digits). | [225] [226] [227] [228] |
| lacrosse-midfielder | 0.12 | 0.08 | Lacrosse midfield success should correlate somewhat with later judo success because both draw on transferable “core athlete” components: staying composed while physical pressure and chaos are high, and producing explosive force during opponent interaction. However, judo is dominated by highly technique-specific motor patterns (grip fighting, leverage in clinch, off-balancing mechanics, throw execution, breakfalls, and transitions to ground/finishes). Lacrosse midfielder contact is not the same constraint system as grappling leverage/throws, so the transfer is mainly psychological/athletic rather than technical. Therefore the relationship is positive but modest, around ~0.12 average with meaningful spread depending on whether the athlete has prior wrestling/BJJ/overall combat-sport exposure and how quickly they learn judo grips, timing, and breakfalls. | [229] [230] [231] [232] |
| padel | 0.07 | 0.05 | Padel performance should correlate slightly with judo success because both involve reacting quickly, creating timing advantages, and maintaining composure during frequent high-tempo exchanges. A skilled padel player may learn new motor patterns faster and better handle uncertainty. However, judo is dominated by grappling-specific skills: grip control and hand-fighting, off-balancing mechanics, throw entry timing, kuzushi/positioning, breakfalls, and safe contact under leverage. Those are not meaningfully trained by padel’s racket-and-ball striking, which uses different body-contact dynamics and movement objectives. Therefore the predictive relationship remains small with large individual differences based on whether the person also has prior martial-arts or strength-contact experience. | [233] |
| pickleball | 0.06 | 0.05 | Pickleball should have a small positive correlation with future judo success, mainly through transferable perceptual timing, quick decision-making, and general balance/footwork under pressure. However, judo performance is dominated by highly sport-specific grappling and throw mechanics (grip fighting, off-balancing lever patterns, breakfalls/entry timing) that pickleball does not train directly. With technique-only transfer and excluding physique effects, the expected correlation remains low—around ~0.06 with moderate uncertainty. | [234] [235] [236] [237] [238] |
| rowing-lightweight | 0.12 | 0.08 | Lightweight rowing should have a small-to-modest positive correlation with judo success. Transfer is mainly through general athletic qualities that matter in judo: whole-body coordination, posture/balance control, ability to generate force efficiently through the kinetic chain, and the habit of keeping mechanics consistent under repeated hard efforts. However, judo performance is strongly driven by highly sport-specific skills with limited rowing overlap: gripping/hand fighting, kuzushi (off-balancing) timing, specific throw/takedown mechanics, breakfalls/landing mechanics, and grappling-specific reactive decision-making and exchange patterns. Rowing’s cyclic stroke mechanics and force directions don’t train the gripping/throw timing loop. So the expected carry-over is low-to-moderate with wide individual variance—higher for athletes who also do strength/power training and have prior grappling experience alongside rowing. | [239] |
| rowing-openweight | 0.15 | 0.07 | Rowing openweight performance is driven by coordinated whole-body force production, leverage, rhythm, and the ability to sustain high effort with consistent mechanics. Judo success also depends on whole-body coordination and leverage principles—especially off-balancing opponents and producing explosive action through a coordinated kinetic chain. However, most of judo’s decisive determinants are highly event- and technique-specific: grip fighting, kuzushi/off-balance execution, breakfalls, gripping dynamics, and throw/transition timing are not trained by rowing’s cyclic pulling/drive mechanics. Thus direct motor-skill transfer is limited. Overall, carry-over should be modestly positive: better rowers likely have a stronger foundation for coordinated power and hard training, but they still must learn core judo techniques from scratch. | [240] [241] [242] |
| rugby-union-halfback-midfield | 0.19 | 0.17 | Rugby union halfback/midfield performance can correlate positively with judo success because both reward body control under contact, awareness in physical contests, and the ability to use leverage and timing during explosive exchanges. However, judo is dominated by specialized grappling and throwing technique: grip fighting, off-balancing mechanics, throw entries/rotation timing, and groundwork rules. Rugby’s primary skills (passing/kicking/distribution and collision running) do not directly train these. As a result, only part of the rugby “skill stack” transfers (mainly balance, contact tolerance, and some tactical composure), giving a modest positive correlation with substantial individual variability in conversion to judo technique. | [243] [244] [245] [246] [247] |
| rugby-union-loose-forward | 0.2 | 0.12 | Rugby loose forward success can correlate with judo because both roles demand effective physical competition: managing contact, using leverage/body angles, and performing repeated explosive efforts while remaining balanced. However, judo performance is dominated by highly specific grips, off-balancing (kuzushi) timing, and throw/set-up mechanics plus safe falling (ukemi). Rugby’s ruck/tackle context does not directly train these techniques, nor the sport-specific rules/scoring tactics. Therefore the correlation should be low-to-moderate positive, with wide variability: some rugby athletes with strong contact coordination and willingness to learn technique transfer better, while others still require substantial judo skill acquisition for throw and ground control quality. | [248] |
| rugby-union-outside-back | 0.25 | 0.12 | Rugby union outside-back success should have a moderate positive correlation with later judo success because both involve operating under physical pressure, off-balancing-like contests, and body control during contact. However, judo performance is heavily determined by highly specific grappling skills (grip fighting, kuzushi, throw entries, and safe ukemi breakfalls). Rugby outside-back roles provide general athleticism and contact tolerance but not the core judo technique repertoire. Therefore the correlation should be moderate, not high. | [249] [250] [251] [252] [253] |
| rugby-union-tight-five | 0.22 | 0.12 | Rugby tight-five and judo share substantial *contact and leverage* overlap at the technique/skill level (again, ignoring body-type). Tight-five success reflects strong ability to operate in close quarters, win and maintain position under heavy resistance, tolerate repeated collisions, and understand leverage/force application within structured rules. Judo success, while sport-specific, is also built on exploiting leverage, off-balancing an opponent, creating instability, and executing throws through coordinated body positioning and explosive engagement. The carry-over should be clearly positive because of: (1) close-contact comfort and stability under force, (2) experience “fighting for position,” and (3) training habits that involve repeated high-stress physical exchanges. However, judo adds key missing technical components: grip-fighting details, different footwork/angle creation for throws, and specific timing to initiate and finish techniques under judo rules. Tight-five scrummaging doesn’t directly teach these throw entries and off-balancing sequences. Net: moderate positive correlation (average ~0.22) with wide uncertainty depending on how much the athlete already has grappling/throwing experience or adapts quickly to judo’s grip/footwork mechanics. | [254] |
| skiing-alpine-speed | 0.1 | 0.09 | Alpine speed-event skiing should show a modest positive relationship with judo success because it develops transferable athletic foundations: dynamic balance at speed, high force tolerance (absorbing impact/perturbations), and coordinated re-centering—useful when learning judo’s stance control and recovery after being off-balance. However, judo is dominated by highly sport-specific skills: grip fighting, off-balancing actions, throw setup/entry timing, and breakfall (ukemi) mechanics. Skiing does not train these specific leverage and joint-timing constraints. Because the overlap is mainly general movement quality rather than core judo technique, the expected carry-over is small but positive, around ~0.10 on average with substantial variability (~0.09 std dev) depending on prior martial arts exposure and willingness to train breakfalls and throws early. | [255] [256] [257] |
| skiing-alpine-technical | 0.1 | 0.07 | Technical alpine skiing (slalom/giant slalom) develops strong dynamic balance, rapid re-aiming of the body, and effective force absorption/redirection while staying controlled. Those skills can translate into better stance control, base stability, and initial learning efficiency for judo movement. But judo success depends strongly on sport-specific grappling mechanics: grip/hand-fighting, throw set-ups, leverage, timing of entries, and managing contact under an adversary. Skiing does not meaningfully train these opponent-interaction techniques. Because of this technique specificity, the carry-over from skiing success to judo success should be small positive rather than moderate or high. | [258] [259] [260] |
| skiing-cross-country | 0.12 | 0.06 | Cross-country skiing performance correlates with balance, whole-body coordination, and the ability to maintain technique while fatigued—useful in judo for staying stable during gripping exchanges and for repeating high-effort movements across bouts. However, judo relies on highly specific skills: breaking posture (off-balancing), grip fighting, close-contact body positioning, and explosive throwing mechanics requiring precise timing of hip/shoulder/leg actions and leverage. Ski XC does not meaningfully train grip-based technique, falling/scrambling mechanics, or the throw-specific neuromuscular patterns. Therefore the carry-over should be limited. It should be positive mainly through general coordination and training discipline, yielding a modest low correlation around ~0.12 with moderate uncertainty. | [261] |
| snowboarding | 0.12 | 0.16 | Snowboarding and judo overlap in general motor prerequisites: dynamic balance, proprioception, and recovering while being perturbed. They also share a small component of leverage-based body control (snow edge/stance leverage vs judo kuzushi). However, judo performance is dominated by grappling-specific techniques: grip fighting, off-balancing entries, throw mechanics, and transitions on the mat. Snowboarding’s key technical skills (edge control, carving, aerials) do not provide direct repetition of those grappling patterns. So a low-to-modest positive correlation is plausible (about ~0.12) with fairly high variability (std dev ~0.16), because some snowboarders may also have combat/grappling exposure outside snowboarding, raising transfer. | [262] [263] [264] [265] |
| soccer-central-defender | 0.1 | 0.08 | Soccer central defender performance should have a modest positive carry-over into judo because both involve physical contest timing, staying composed under contact, and coping with off-balance moments. Central defenders also develop body control and recovery skills useful when grappling forces you to adjust posture. However, judo success is dominated by highly sport-specific techniques: grip fighting, throw entries/execution, transitions (tachi-waza/ne-waza), and breakfall mechanics. Soccer defending doesn’t train these core technique elements directly, creating a technique-architecture mismatch that limits the predictive relationship. Net effect: a low-to-moderate correlation, plausible around ~0.10 with uncertainty around ±0.08. | [266] [267] [268] [269] |
| soccer-central-midfielder | 0.14 | 0.1 | Central midfield success provides meaningful transferable qualities for judo: managing balance and coordination during contact, staying composed under physical pressure, and reading an opponent’s movement to gain advantage. That supports a modest positive correlation. But judo achievement depends heavily on technique-specific grappling: grips, kuzushi (off-balancing) entries, throw biomechanics, and mat-based positional control. Soccer does not train these specific skills, so the correlation should remain low-to-moderate rather than high. | [270] |
| soccer-goalkeeper | 0.08 | 0.06 | Soccer goalkeeper performance reflects ball-tracking, rapid decision-making, explosive lower/upper-body actions, and comfort with high-intensity, high-pressure moments. Judo success depends mainly on grip fighting, leverage, timing of throws/sweeps, breakfalls, balance under contact, and tactical off-balancing. There is limited direct technical overlap (no shared throwing/grappling mechanics), but there is some transferable athletic behavior: spatial awareness, reaction timing, anticipatory reading of an opponent, and training habits around split-second decisions and explosiveness. Because technique domains differ (kicking/shot-stopping vs grappling/throwing), the carry-over advantage should be small and variable—hence a low positive correlation around ~0.08 with moderate uncertainty. | [271] |
| soccer-striker | 0.07 | 0.06 | Soccer striker success should correlate slightly with judo success because both reward explosive, coordinated action and coping with high-pressure moments where you must commit quickly. However, the technical bottlenecks in judo are very specialized: grip control, off-balancing (kuzushi), throw mechanics, grappling position transitions, and fall safety. Striker technique does not meaningfully teach these grappling skills. Therefore the correlation should be small and mostly reflect general adaptability and competitive mindset. | [272] |
| soccer-winger | 0.12 | 0.08 | Soccer winger performance should have a small positive correlation with judo success. The transferable pieces are general athletic qualities—coordination, balance, ability to explode quickly, and mental toughness under pressure. But judo at a high level is dominated by highly specific techniques and skills: grip fighting, off-balancing (kuzushi), throw setup mechanics, stance/footwork for throws, and grappling positional control (takedown defense, escapes, and transitions). Soccer winger training (kicking/dribbling, open-space acceleration, and repeated sprinting) doesn’t develop the core neuromuscular patterns and tactical skills used to control an opponent’s posture and leverage. Because of this large technique mismatch, the expected average correlation stays low (low teens), with meaningful variation if the athlete has prior grappling exposure or has trained with substantial contact/throwing practice. | [273] [274] [275] |
| softball-catcher | 0.06 | 0.06 | Softball catcher success should have only a weak positive relationship with judo success. There is some transferable variance in general athletic coordination: maintaining a stable base in a crouch, reacting quickly to changing situations, and learning complex movement patterns under pressure. However, judo’s performance determinants are highly event-specific: grip-fighting, off-balancing timing, leverage-based throws, transitions to pins/submissions, and grappling positional control. Catcher training does not provide the core technical learning pathways for these. Therefore the correlation should remain low positive. | [276] |
| softball-field-player | 0.06 | 0.07 | Softball field-player success should have a small positive relationship with judo success because both involve general coordination, balance, and the ability to react and move explosively under changing stimuli. However, judo is fundamentally a grappling/throwing sport where success depends on event-specific technique: grip fighting, off-balancing, leverage-based throw entries and execution, and grappling transitions. These core skills are not meaningfully trained by softball fielding, so carryover should remain low. | [277] [278] [279] |
| softball-pitcher | 0.1 | 0.12 | A softball pitcher can transfer some general athletic/technical components to judo: (1) sequencing and force generation through the kinetic chain, (2) comfort with repeated high-power movements under fatigue, and (3) a competitive mindset built around repeated attempts and micro-adjustments. However, judo success is dominated by grip/hand control, off-balancing, leverage, and takedown timing based on opponent movement—skills that are largely different from underhand pitching mechanics and from bat-and-ball game context. Because the overlap is mostly “general power/coordination and pressure tolerance” rather than specific technique, the expected correlation is small-to-moderate with high uncertainty. | [280] |
| squash | 0.11 | 0.09 | Squash and judo share some transferable “athletic combat” components: reading an opponent/opportunity quickly, rapid stimulus–response, dynamic balance, and executing explosive movements in short bursts while maintaining control. However, judo success is dominated by highly sport-specific technical skills: grip control and grip-fighting, off-balancing (kuzushi) mechanics, entry/throw timing (tachi-waza), ground transitions (ne-waza), breakfalls (ukemi), and rule-based tactical decisions. Squash doesn’t train these grappling motor patterns directly, and its opponent interaction is indirect (no clinch/grappling constraints). Thus the relationship should be modestly positive but not high. A plausible Bayesian-centered estimate is r ≈ 0.11 with std dev ≈ 0.09 to reflect limited technical overlap and significant individual variation in whether squash success derived more from explosive coordination/pressure tolerance (higher transfer) or racket-specific skills (lower transfer). | [281] |
| surfing | 0.12 | 0.07 | Surfing should correlate modestly with judo success because both reward general athletic skills: dynamic balance, coordination, and the ability to stay skillful while your base is unstable (waves vs gripping/footing exchanges). Surfing can also develop a good sense of timing for explosive movements (“pop up”) and an ability to keep moving through fatigue. However, judo performance is dominated by judo-specific technical and tactical skills: grip fighting, posture/balance control, throw mechanics and entries, transitions to pins/chokes (where applicable), and movement on a wrestling surface. Surfing does not teach the key grappling motor patterns (tethered-force control through grips, hip/shoulder positioning for throws, breakfalls, and many variations of off-balancing). So the expected correlation stays low-to-moderate with substantial individual variance—especially higher for those who also do wrestling/BJJ or train throws/breakfalls early. | [282] |
| swimming-backstroke-middle-distance | 0.08 | 0.06 | Middle-distance backstroke success is driven by rhythm, stroke economy, shoulder endurance, and maintaining efficient technique under fatigue. Judo success depends far more on sport-specific mechanics: explosive throw execution (hip/leg drive and leverage timing), off-balancing, grip-fighting, balance control, and adapting instantly to an opponent’s resistance. There is limited overlap beyond a general athletic/conditioning and technique-learning ability, so a small positive correlation is plausible but low. Hence ~0.08 with moderate uncertainty (~0.06), reflecting that some swimmers adapt quickly to judo training habits, while most still must learn most core grappling and throwing skills from scratch. | [283] [284] [285] |
| swimming-backstroke-sprint | 0.12 | 0.06 | Sprint backstroke success should correlate weakly to modestly with judo success because both reward short-burst explosiveness, coordinated whole-body tension, and executing technique at high intensity. However, judo’s decisive skills are highly sport-specific: grip fighting, off-balancing, clinch control, throwing mechanics, and timing based on an opponent’s actions. Swimming backstroke does not train those grappling/throw-specific perceptual-motor patterns. Therefore the carryover in technique/skill success should remain modest rather than high. | [286] [287] [288] [289] |
| swimming-breaststroke-middle-distance | 0.1 | 0.06 | Middle-distance breaststroke excellence indicates good whole-body coordination, rhythm, and the ability to keep a precise technique pattern under fatigue. Those general motor-learning traits can give a slight head start when transitioning to judo. However, judo’s primary determinants are sport-specific: grip fighting, off-balancing mechanics, leverage/hip-throw coordination, grappling footwork, and explosive throw/transition timing in a live contact environment. Breaststroke mechanics and energy-system emphasis (efficient sustained output) overlap only partially with judo’s repeated explosive exchanges and leverage-based force application. Therefore, the expected correlation is low-positive with meaningful variability depending on whether the swimmer also adapts quickly to strength/contact and learns grappling mechanics efficiently. | [290] [291] [292] [293] |
| swimming-breaststroke-sprint | 0.14 | 0.06 | Sprint breaststroke success signals strong whole-body timing (simultaneous arm-leg coordination), good ability to apply force quickly, and disciplined technical repetition—qualities that can translate into learning judo movement skills and explosive entry timing. However, judo’s primary determinants are highly opponent-interactive and technique-specific: grip control, off-balancing, throw/entry mechanics, and safe breakfall patterns. Swimming breaststroke does not train those collision/grappling-derived skills. Thus skill-technique carry-over is limited, yielding a small-to-moderate positive correlation rather than high transfer. | [294] [295] [296] |
| swimming-butterfly-middle-distance | 0.1 | 0.06 | Swimming butterfly middle-distance success is driven by rhythmic whole-body coordination, upper-body/trunk power, and maintaining technical quality as fatigue accumulates. Judo success depends more on sport-specific gripping, off-balancing, leverage, timing of explosive entries, and adapting to an opponent—mechanics with limited direct overlap with swimming. Still, there is meaningful shared substrate: general coordination/body control, postural stability, and the ability to keep execution quality during repeated hard efforts. This produces a modest positive carryover rather than near-zero. Expected correlation ~0.10 with moderate uncertainty. | [297] [298] [299] [300] |
| swimming-butterfly-sprint | 0.1 | 0.06 | Butterfly sprint success indicates strong short-duration explosive upper-body/whole-body power, good coordination of the kinetic chain, rhythm/tempo control, and the ability to keep movement patterns from breaking down under intense fatigue. Judo success also requires explosive exchanges, coordinated whole-body mechanics for throwing/off-balancing, leverage, and staying technically effective across repeated high-intensity grappling moments. Because both sports share a “power + coordination + technique under fatigue” ingredient, a modest positive correlation is plausible. However, judo is dominated by sport-specific skills: grip fighting, body positioning in clinch, and precise throw/sweep mechanics and timing with contact resistance. Swimming butterfly does not directly train those grappling mechanics. So overall carry-over should be modest rather than high. Plausible Bayesian estimate: mean ≈ 0.10, std dev ≈ 0.06. | [301] |
| swimming-freestyle-distance | 0.09 | 0.06 | Swimming distance freestyle performance mainly reflects endurance, efficiency, and maintaining coordinated movement as fatigue rises. Judo success is heavily driven by sport-specific perceptual-motor skills: grip fighting, off-balancing, leverage-based throw timing, and grappling reactions. There is modest overlap in general conditioning and motor-learning discipline, but direct technical transfer from swimming is limited. Therefore the correlation should be small but positive, around ~0.09, with moderate uncertainty. | [302] [303] [304] |
| swimming-freestyle-middle-distance | 0.14 | 0.08 | Middle-distance freestyle success reflects aerobic efficiency, pacing/effort regulation, and refined whole-body coordination during high repetition. Judo success depends much more on sport-specific technical skills: gripping/hand-fighting, off-balancing, throw setup and timing, and grappling control, which have limited mechanical overlap with swimming propulsion. However, there is still some meaningful transfer from general athletic qualities (coordination, learning technique, body control) and from the ability to handle repeated high-intensity work and stay composed under fatigue. Therefore the expected correlation is modestly positive but not large. | [305] [306] [307] |
| swimming-freestyle-sprint | 0.11 | 0.07 | Sprint freestyle success reflects explosive power expression (especially starts/turns), high-rate movement coordination, and comfort with short maximal efforts. Judo also involves explosive bursts during grips-to-throw exchanges, repeated intense efforts, and the ability to keep technique effective under fatigue. That shared “explosive + repeated high intensity” component makes a small-to-modest positive correlation plausible. However, judo performance is dominated by sport-specific technical skill: grip fighting, off-balancing mechanics, hip/leg throw sequencing, and grappling-specific timing and leverage. Swimming does not train these movement patterns directly. Therefore carry-over should stay low and depend on learning speed, not just athletic traits. | [308] [309] [310] [311] [312] |
| table-tennis | 0.22 | 0.15 | Table tennis success should have a modest positive correlation with future judo success because both involve rapid opponent reading, reactive timing, and coordinated explosive exchanges in close interaction. Additionally, table tennis precision and fine motor control can help with judo grip positioning and controlling angles. However, judo’s dominant determinants are throws and grappling-specific mechanics (off-balancing/leverage, hip/shoulder mechanics, grip-fighting sequences, and continuous contact control), which do not map cleanly from racket/spin skills. Also, judo conditioning and repeated clinch work are highly specific. Therefore the expected carry-over is modest: about ~0.22 with moderate uncertainty (~0.15). | [313] [314] [315] [316] |
| taekwondo | 0.46 | 0.1 | Taekwondo success should correlate moderately with future judo success because both are combat sports with sparring pressure, distance/timing skills, and explosive exchange abilities. However, judo is grappling- and leverage-grip-based, and depends on highly specific throw/grip/transition mechanics that taekwondo does not directly train. Accounting for that mismatch, the carry-over is expected to be moderate rather than very high. | [317] [318] [319] [320] [321] [322] |
| tennis | 0.06 | 0.04 | Tennis performance is expected to have a small correlation with judo success. Shared elements include general coordination, balance, quick footwork, and the ability to time actions under pressure. However, judo’s decisive skills are highly combat-specific: gripping, leverage-based off-balancing, throw setup/turning mechanics, grip fighting, and ground techniques that are not developed by tennis. Also, the interaction constraint is very different—tennis is an open-skill striking task, while judo is continuous close-contact force exchange. Therefore carry-over should be modest and mainly help with initial learning rather than top-level judo performance. | [323] [324] [325] |
| triathlon | 0.08 | 0.04 | Triathlon success should have a weak positive correlation with later judo success. Both require tolerance for fatigue and the ability to keep technique choices while tired. But judo performance depends much more on sport-specific skills: grip strength and grip-fighting, off-balancing timing, throw/setup mechanics, grappling positional control, and explosive burst coordination in close contact. Triathlon does not train those technical/tactical grappling elements, so the carry-over should remain small, around ~0.08. | [326] |
| volleyball-attacker | 0.08 | 0.07 | Volleyball attackers can transfer a bit to judo through technique-neutral capacities: explosive whole-body power, timing, and spatial/body control—especially after leaving the ground and re-centering their balance quickly. That may help early learning and confidence. But judo success is dominated by sport-specific skills: grips and hand-fighting, off-balancing (kuzushi), throwing mechanics with correct leverage angles, grappling transitions, and repeated clinch/ground exchange patterns. Volleyball attacking does not train these motor programs. Therefore the carry-over is expected to be small but positive, around ~0.08, with moderate uncertainty (~0.07). | [327] [328] |
| volleyball-libero | 0.09 | 0.07 | Volleyball libero success can correlate slightly with judo success because both benefit from (1) strong balance and body positioning, (2) rapid reaction and footwork to changing opponent actions, and (3) the ability to absorb or manage force while staying coordinated. However, judo technique depends heavily on sport-specific skills: grip fighting, kuzushi (off-balancing) timing, throw mechanics (hips/angles/hand positioning), and ukemi (safe falling/rolling) plus grappling-specific conditioning. Libero digging/reception trains lower-body coordination and stable positioning with the ball, but not the hand-grip leverage patterns, throw entries, or ground-fall mechanics central to judo. Therefore the carry-over should be positive but small (~0.09). | [329] |
| volleyball-middle-blocker | 0.12 | 0.1 | Volleyball middle blockers develop quick timing, explosive engagement, and good body control for sudden high-force actions (jumping/blocking/attacking). Those general traits can transfer to judo in the sense that judo also involves rapid decisions, coordination under pressure, and producing force with whole-body mechanics. However, judo’s core performance is determined by sport-specific technical skills: grip fighting, off-balancing (kuzushi), precise throw mechanics and leverage angles, and grappling positional control on the mat. Volleyball blocking timing is a different interaction and doesn’t train the hands-on-grappling leverage systems that dominate judo. So the carry-over should be low-to-modest positive rather than strong. | [330] [331] |
| volleyball-setter | 0.06 | 0.07 | Volleyball setters and judo practitioners overlap mainly in general, learnable traits: (1) tracking a moving object/reading cues early, (2) coordinating whole-body movement quickly, and (3) performing explosive actions under time pressure. But judo’s determinants are highly sport-specific: grip fighting, off-balancing entries, throw mechanics/kinetic sequencing, breakfalls (ukemi), and grappling positional control built through continuous sparring. Volleyball setting’s overhead two-contact ball placement does not train these core combat skills. Because the overlap is mostly general coordination/reactivity rather than technique, the expected correlation is small but positive. A plausible Bayesian estimate is ~0.06 with fairly high uncertainty (~0.07). | [332] [333] [334] |
| wrestling | 0.78 | 0.14 | Wrestling and judo are both grappling combat sports and they share many of the same *technique-adjacent* skills: body positioning, leverage, off-balancing, explosive transitions, and controlling/steering an opponent through close-range engagements. A strong wrestler often already has the core “grappling instincts” that make learning judo much faster. But they’re not identical. Judo has different grips/attire (gi), a different scoring emphasis, and distinct throw mechanics and safe entry/turnover patterns compared with typical wrestling takedown styles. Those differences reduce the ceiling below near-perfect transfer, while still leaving substantial overlap. Because most transferable components are core and direct, the correlation should be high (around ~0.78) with moderate variability (~0.14). | [335] [336] [337] |
Sources
Measurements sources
| # | Title | Authors | Year | Publisher | Use | URL |
|---|---|---|---|---|---|---|
| [1] | Physiological, Anthropometric, and Motor Characteristics of Elite Chinese Youth Athletes From Six Different Sports | Authors n/a | 2017 | PMC | Used for an evidence base that arm-span-type measures differ by sport and can be relatively large in judo contexts. | Open source |
| [2] | Anthropometry of Olympic Athletes 2016 (compiled table includes Judo) | Authors n/a | 2016 | Topend Sports | Used for an elite-judo height/weight ballpark anchor. | Open source |
| [3] | Physical and Physiological Characteristics of Judo Athletes: An Update | Authors n/a | 2018 | PMC (review) | Used for qualitative justification that elite judoka have typical athletic male body size trends (height/body composition differences vs females; weight category variability). | Open source |
| [4] | General anthropometric expectation: arm span/height often slightly above 1.0 in males; judo favors reach | Authors n/a | N/A | Inferred synthesis | Used as an informed inference combining reach advantage rationale with typical male distribution. | Open source |
| [5] | Body Size & Composition considerations in judo athlete profiles (review) | Authors n/a | 2018 | PMC | Used qualitatively to justify that leg-length/lean mass traits matter, but subselection depends on weight category and style. | Open source |
| [6] | Judo athlete body composition/somatotype tends to favor athletic (mesomorphic) morphology in men | Authors n/a | 2018 | PMC review | Qualitative support for male judoka being mesomorphic/athletic with relatively balanced trunk frame. | Open source |
| [7] | Average Shoulder Width and How to Measure Yours | Authors n/a | 2024 | Healthline | Used for general anthropometric plausibility for adult male shoulder width. | Open source |
| [8] | General adult male anthropometric segment tables (example dataset page) | Authors n/a | N/A | Wright/CECS (anthropometry sample page) | Used to keep torso/segment lengths in plausible human proportions. | Open source |
| [9] | No robust judo-specific ankle circumference datasets found quickly; value set using general adult male anthropometry plausibility | Authors n/a | N/A | Inferred | Inference used where sport-specific ankle girth averages aren’t readily available. | Open source |
| [10] | Malaysian Journal of Forensic Sciences (male foot length segment means given; used to estimate typical overall foot length) | Authors n/a | 2018 | Malaysian Journal of Forensic Sciences | Used to derive plausible male foot-length magnitude (segment lengths; overall modeled). | Open source |
| [11] | Automated Deep Learning Estimation of Anthropometric Measurements ... (Table reports hand length) | Authors n/a | 2023 | OSTI (PDF landing capture of a paper) | Direct reported mean and SD for hand length. | Open source |
| [12] | General male segment proportions; sport-specific leg:torso extremes not consistently established for judo | Authors n/a | N/A | Inferred | Inference used because leg:torso ratios are rarely published as a single statistic for elite judoka. | Open source |
| [13] | Anthropometric reference tables are sparse for pelvic-bone-width in publicly accessible athlete datasets; value set by general adult male plausibility | Authors n/a | N/A | Inferred | Used as an informed inference where sport-specific bone-width distributions are not readily available. | Open source |
| [14] | Wrist-worn wearables ... significance of user anthropometry (Table reports wrist circumference for males) | Authors n/a | 2020 | BioMedical Engineering OnLine (BMC) | Direct male wrist circumference mean and SD. | Open source |
Traits sources
| # | Title | Authors | Year | Publisher | Use | URL |
|---|---|---|---|---|---|---|
| [15] | Physical and Physiological Characteristics of Judo Athletes: An Update | Authors n/a | 2018 | PMC review | Used to justify a fast-contractile contribution (explosive exchanges/throws) alongside repeated efforts requiring repeatability (a more balanced fiber need). | Open source |
| [16] | General judo performance requires flexibility and control (review-level synthesis) | Authors n/a | 2018 | PMC review | Used to motivate that flexibility helps but elite performance also needs stability for throws and scrambles. | Open source |
| [17] | No strong judo-specific foot-arch distributions available; set to neutral as common adult pattern for general stability | Authors n/a | N/A | Inferred | Inference used due to lack of direct judo-elite foot arch data. | Open source |
| [18] | No evidence for a judo-specific thermoregulation preference by body type; modeled as neutral | Authors n/a | N/A | Inferred | Inference due to lack of direct data linking thermoregulation traits to judo anthropometrics. | Open source |
| [19] | No strong evidence that being consistently right- or left-dominant is a universal advantage across elite judo | Authors n/a | N/A | Inferred | Inference used; while individual matchups can benefit from rarity, it’s not a stable population-level selection trait. | Open source |
Goals sources
| # | Title | Authors | Year | Publisher | Use | URL |
|---|---|---|---|---|---|---|
| [20] | Evaluating the effectiveness of an exercise program based on the Adapted Utilitarian Judo program… (BMC Geriatrics, 2025) | Authors n/a | 2025 | BMC Geriatrics | Notes judo-style programs support self-confidence through mastery and challenge. | Open source |
| [21] | Judo exercises increase emotional expression, self-control, and psychological resilience (Frontiers, 2025) | Authors n/a | 2025 | Frontiers in Psychology | Supports psychological benefits that translate into greater confidence/self-regulation. | Open source |
| [22] | Judo cardiovascular adaptations: a narrative review | Authors n/a | 2024 | (PMC) | Supports improvements in aerobic capacity/VO2max and cardiovascular efficiency in judo practitioners. | Open source |
| [23] | Aerobic training program for the enhancements of HR and VO2 off-kinetics in elite judo athletes (HIIT add-on) | Authors n/a | 2014 | PubMed | Supports that adding aerobic/interval components improves physiological fitness markers in judo training. | Open source |
| [24] | JPES 2020 PDF (judo practitioners and aerobic power/fitness) | Authors n/a | 2020 | (EFSP) | Additional support for endurance-related fitness in judo. | Open source |
| [25] | Effects of Strength Training on Physical Fitness of Olympic Combat Sports Athletes: A Systematic Review | Authors n/a | 2022 | (PMC) | Summarizes evidence for strength/power and strength-endurance adaptations tied to combat sport training. | Open source |
| [26] | Judo rules (competition structure and safety notes) | Authors n/a | (page last updated over time) | Wikipedia | Supports that judo is organized around standardized rules/competition, enabling measurable performance. | Open source |
| [27] | Practicing Judo Safely (PDF) | Authors n/a | 2017 | Judo Canada | Highlights that contact sports have injury considerations, which can affect whether amateurs compete early. | Open source |
| [28] | A Biomechanical Reassessment of the Scientific Foundations of Jigoro Kano's Kodokan Judo | Authors n/a | 2012 | arXiv | Provides biomechanical grounding for coordinated phases of throws that require timing and whole-body coordination. | Open source |
| [29] | Techniques frequently used during London Olympic judo tournaments: a biomechanical approach | Authors n/a | 2013 | arXiv | Shows how throws/transitions are executed with structured mechanics, supporting the coordination demand. | Open source |
| [30] | Benefits of Judo Training for Brain Functions… in Older Adults (and functional fitness context) | Authors n/a | 2022 | MDPI | Supports broad functional benefits that often include mobility-related capacity. | Open source |
| [31] | The Arts and Sciences of Judo, Vol. 3 No. 1 (PDF) | Authors n/a | 2023 | (PDF hosted) | Provides general discussion of physical demands and conditioning elements of judo that relate to range-of-motion/functional fitness (indirect support). | Open source |
| [32] | Journal of Physical Education and Sport (JPES) article PDF (2020, supplement) | Authors n/a | 2020 | (EFSP) | Additional evidence that long-term judo is associated with aerobic/physical fitness measures. | Open source |
| [33] | Judo rules (overview of how judo is practiced/structured) | Authors n/a | (page last updated over time) | Wikipedia | Provides context on the sport’s structure and competitive practice, which parallels skill development at amateur levels. | Open source |
| [34] | The effect of multi-system relaxation training on reducing stress among judo beginner players | Authors n/a | 2019 | International Journal of Psychosocial Rehabilitation | Supports that stress can decrease in judo participants via relaxation components integrated with training. | Open source |
| [35] | The Effects of a 10-week Judo Program on Cortisol and Stress… (UCF thesis) | Authors n/a | (thesis year not shown in snippet) | UCF STARS | Provides evidence (in an applied program context) that judo can reduce stress-related outcomes such as cortisol. | Open source |
Preferences sources
| # | Title | Authors | Year | Publisher | Use | URL |
|---|---|---|---|---|---|---|
| [36] | Judo overview (competitive goals and match scoring) | Authors n/a | n/a | Wikipedia | Used to acknowledge judo’s established competitive framework while leaving room for recreational participation. | Open source |
| [37] | Judo overview (throwing, immobilization/pins, submissions) | Authors n/a | n/a | Wikipedia | Supports that judo success involves contact-based techniques like throws and pins. | Open source |
| [38] | Judo overview (training occurs on the mat with partners for technique and sparring) | Authors n/a | n/a | Wikipedia | Used to support the dependency on scheduled dojo training and partner work rather than fully self-directed sessions. | Open source |
| [39] | Judo overview | Authors n/a | n/a | Wikipedia | Used for the general context of judo as a mat-based martial art typically practiced indoors. | Open source |
| [40] | Suggestions for Judo Training with Pacing Strategy and Decision Making (effort-pause profile) | Authors n/a | 2018 | PMC | Used to support that judo has an effort–pause structure rather than long steady efforts dominating. | Open source |
| [41] | Judo injuries: a systematic literature review including prevention suggestions | Authors n/a | 2013 | British Journal of Sports Medicine | Used to support that judo has meaningful injury risk patterns (including joint-related issues). | Open source |
| [42] | Judo Injuries Frequency in Europe’s Top-Level Competitions (2005–2020) | Authors n/a | 2021 | PMC | Used to support that lower-limb and other joint injuries occur in judo competition, indicating it is not generally “joint-gentle.” | Open source |
| [43] | Judo description and objectives (throw, pin, submission) | Authors n/a | n/a | Wikipedia | Supports that judo performance is about individual execution of techniques against an opponent. | Open source |
| [44] | Judo overview (grappling and throwing, pins/submissions) | Authors n/a | n/a | Wikipedia | Used to support that judo is a direct-contact grappling sport. | Open source |
| [45] | Judo overview (mat-based combat sport) | Authors n/a | n/a | Wikipedia | Supports that the sport is generally conducted on mats rather than outdoors. | Open source |
| [46] | Judo overview (rules/competition objective, match progression through scoring like ippon, groundwork) | Authors n/a | n/a | Wikipedia | Used for the structured nature of scoring/competition and core match flow. | Open source |
| [47] | Suggestions for Judo Training with Pacing Strategy and Decision Making (match effort/pause) | Authors n/a | 2018 | PMC | Used to support that judo involves an effort–pause pattern and short exchanges, aligning with burst-like efforts. | Open source |
| [48] | Throw (grappling) definition (off-balancing, throwing opponent to ground) | Authors n/a | n/a | Wikipedia | Used to characterize throws as off-balancing/accelerated actions rather than slow steady efforts. | Open source |
| [49] | Suggestions for Judo Training with Pacing Strategy and Decision Making | Authors n/a | 2018 | PMC | Used to support that decision-making and pacing/strategy across phases matter in judo. | Open source |
| [50] | Judo overview (throws, pins, submissions) | Authors n/a | n/a | Wikipedia | Used to characterize judo as an individual opponent-based combat sport rather than a team sport. | Open source |
| [51] | Judo overview (objective and techniques like throws, pins, submissions) | Authors n/a | n/a | Wikipedia | Used to ground the explanation that judo’s core is technique execution (throws, immobilization, submissions). | Open source |
| [52] | Judo overview (throwing techniques, groundwork and submissions) | Authors n/a | n/a | Wikipedia | Supports that judo includes both standing throws and ground work, contributing to variety. | Open source |
Injuries sources
| # | Title | Authors | Year | Publisher | Use | URL |
|---|---|---|---|---|---|---|
| [53] | Injuries in judo: a systematic literature review including suggestions for prevention | Authors n/a | 2013/2014 (volume-year per article) | British Journal of Sports Medicine | Used to show overall common injury locations; ankle/foot appears but less dominant than knee/shoulder/hand. | Open source |
| [54] | Epidemiology of Injuries during Judo Tournaments | Authors n/a | 2022 (per page) | PMC (systematic review) | Used as background for where injuries occur in judo tournaments (overall distribution). | Open source |
| [55] | Systematic development of an injury prevention programme for judo athletes: the IPPON intervention | Authors n/a | 2020 (per article) | PMC (journal article) | Indicates the injury prevention programme focus (shoulder/knee/ankle) rather than Achilles tendinopathy prevention specifically. | Open source |
| [56] | High-load strength training improves outcome in patients with plantar fasciitis: A randomized controlled trial with 12-month follow-up | Authors n/a | 2014 (per trial) | PubMed | Illustrates tendon disorders often respond to appropriately dosed loading; however it’s plantar fasciitis, so it’s only general context—not proof for Achilles tendinopathy healing from judo. | Open source |
| [57] | Injuries in judo: a systematic literature review including suggestions for prevention | Authors n/a | 2013/2014 | British Journal of Sports Medicine | Used to confirm knee is among the most commonly injured sites in judo. | Open source |
| [58] | Prevention of Knee and Anterior Cruciate Ligament Injuries Through the Use of Neuromuscular and Proprioceptive Training: An Evidence-Based Review | Authors n/a | 2017 (per volume) | Journal of Athletic Training | General ACL prevention evidence supports that neuromuscular training reduces risk (used for prevention/justification, not judo-only incidence). | Open source |
| [59] | Systematic development of an injury prevention programme for judo athletes: the IPPON intervention | Authors n/a | 2020 | PMC | Shows judo prevention programmes target knee (and ankle/shoulder). | Open source |
| [60] | Prevention of Knee and Anterior Cruciate Ligament Injuries Through the Use of Neuromuscular and Proprioceptive Training: An Evidence-Based Review | Authors n/a | 2017 | Journal of Athletic Training | Evidence base that neuromuscular/proprioceptive training reduces knee/ACL injuries in general. | Open source |
| [61] | Judo Injuries Frequency in Europe’s Top-Level Competitions in the Period 2005–2020 | Authors n/a | 2021 (per article) | PMC (journal article) | Used for overall injury site distribution; supports significant lower-limb injury presence. | Open source |
| [62] | Injury Symmetry in Judo | Authors n/a | 2023 (per article metadata) | MDPI | Provides distribution-type evidence that knee and other regions are common, with ankle also appearing (used to justify medium rather than low). | Open source |
| [63] | Martial arts injuries: a longitudinal study about judo, karate and wushu carried out in the Community of Madrid, Spain | Authors n/a | 2020 (per PubMed entry) | PubMed | Provides evidence of injury distribution across body regions in judo/related martial arts. | Open source |
| [64] | Judo Injuries Frequency in Europe’s Top-Level Competitions in the Period 2005–2020 | Authors n/a | 2021 | PMC | Provides competing-level injury site distribution including knee as a primary location. | Open source |
| [65] | The effects of training intervention on the prevention of knee joint injuries: a systematic review and meta-analysis | Authors n/a | 2024/2025 (per article) | PMC | General evidence that training can improve neuromuscular control/strength and reduce knee injury risk. | Open source |
| [66] | The effects of training intervention on the prevention of knee joint injuries: a systematic review and meta-analysis | Authors n/a | 2024/2025 | PMC | Used for the broader concept that training improves function/control relevant to knee symptoms. | Open source |
| [67] | Injury Symmetry in Judo | Authors n/a | 2023 | MDPI | Provides distribution-type evidence including spinal regions. | Open source |
| [68] | Exercise for patellar tendinopathy | Authors n/a | 2024/2025 (per PubMed listing) | PubMed | General context that tendon outcomes are influenced by strengthening/load prescriptions; not proof for glute/hip tendinopathy healing from judo. | Open source |
| [69] | Exercise for patellar tendinopathy | Authors n/a | 2024/2025 | PubMed | General evidence that strengthening/loading is central for patellar tendinopathy management (used for mechanism reasoning). | Open source |
| [70] | Injury incidence in judokas (archbudo PDF) | Authors n/a | 2013 (PDF year) | archbudo.eu | Provides injury incidence context in judo; used to support that severe specific shoulder instability is not necessarily the dominant shoulder outcome. | Open source |
| [71] | Epidemiology of Injuries during Judo Tournaments | Authors n/a | 2022 (per article) | PMC (systematic review) | Used as broad epidemiology context; no clear evidence of spondylolysis as a common judo outcome. | Open source |
| [72] | Epidemiology of Injuries during Judo Tournaments | Authors n/a | 2022 | PMC | Broad injury context; no healing benefit evidence. | Open source |
Past-sport transfer sources
| # | Title | Authors | Year | Publisher | Use | URL |
|---|---|---|---|---|---|---|
| [73] | Explosive off-balance/athletic exchange overlap (burst power, coordination under contact) | — | — | Sports science/transfer synthesis | Used to justify a small positive correlation because defensive backs often have quick bursts, good body control, and can explode into/through contact situations—useful entry traits for judo throws. | Open source |
| [74] | High technique specificity mismatch (grip/throw mechanics, leverage sequences) | — | — | Skill acquisition specificity synthesis | Reduced correlation because judo success depends heavily on sport-specific gripping, hip/leg throw mechanics, timing of off-balancing (kuzushi), and rotational leverage sequences not trained in football coverage. | Open source |
| [75] | Different movement constraints (standing open-field pursuit vs grappling clinch/off-balancing) | — | — | Biomechanics/transfer synthesis | Added reduction because football defensive back movement is reactive in open space, while judo requires mastery of clinch positions, takedown setups, and balance disruption mechanics under grappling constraints. | Open source |
| [76] | Mental adaptation/pressure tolerance transfer weakly | — | — | Sports psychology/transfer synthesis | Added a small boost because elite defenders are used to high-pressure environments and responding to coaching cues, which can speed early judo learning. | Open source |
| [77] | The perceptual – Cognitive skills of combat sports athletes: A systematic review | (not extracted) | (not extracted; based on article listing) | ScienceDirect | Used to support that combat-sport success is meaningfully related to perceptual-cognitive abilities (e.g., perception-action coupling, anticipation/decision making), implying non-zero skill carryover from another collision/duel sport via shared perceptual mechanisms. | Open source |
| [78] | Physiological, perceptual and performance variables partially predict pacing in judo | Emerson Franchini, et al. | 2023 | International Journal of Performance Analysis in Sport (Taylor & Francis) | Used to support that judo performance depends on a mix of physiological and perceptual/performance factors, but not only one domain—so football line success predicts only partially (moderate correlation), not strongly. | Open source |
| [79] | Physical fitness predicts technical-tactical and time-motion profile in simulated Judo and Brazilian Jiu-Jitsu matches | (not extracted) | 2018 (published ~7.9y before 2026 per indexing) | PubMed | Used to support that combat-sport outcomes are partly explained by physical fitness (anaerobic/aerobic/neuromuscular), aligning with football line power/toughness carryover; still, it varies by modality/skills so prediction is limited. | Open source |
| [80] | Specific and general transfer of perceptual-motor skills and learning between sports: A systematic review | Orlando, et al. | 2021 | ScienceDirect | Used as the main transfer constraint: cross-sport prediction is moderate when overlap is mainly general/partial, but drops when the action system is sport-specific—here, football line engagement vs judo grips/throws/ground transitions. | Open source |
| [81] | Moderate transfer when both are leverage/contact sports with explosive exchanges | Zimmerman, Schmidt | N/A | Motor learning / skill transfer theory (domain knowledge) | Used to justify a moderate positive correlation: both LB/TE and judo emphasize balance control, leverage, and explosive engagement/exchanges. | Open source |
| [82] | Judo performance is dominated by grip, throw entries, and grappling positioning | Judo coaching heuristics | N/A | Coaching/domain knowledge | Reduced correlation because judo success depends heavily on judo-specific grips, hip-throw timing/entries, kuzushi technique, and repeated grappling positioning—not primary for LB/TE. | Open source |
| [83] | Football pad-contact differs from jacket-gi grip fighting and throw off-balancing | Movement-pattern specificity heuristics | N/A | Movement specificity (domain knowledge) | Adjusted downward because football contact emphasizes tackling/blocking leverage and short bursts, while judo requires sustained grip fighting, off-balancing mechanics, and throw/scramble sequences. | Open source |
| [84] | Hand-eye coordination, movement reaction time and hand tactile sensitivity depending on the practiced sports discipline | Authors n/a | 2019/2018 (published ~2019 per crawl) | PubMed | Used to support that hand–eye coordination and reaction-time characteristics differ by practiced sport discipline and are relevant for combat sports—supporting non-zero QB→judo transfer through shared perceptual-motor capabilities. | Open source |
| [85] | Perceptual and Motor Performance of Combat-Sport Athletes Differs According to Specific Demands of the Discipline | Cohen et al. (et al.) | 2017 | PubMed | Used to argue that combat sports create discipline-specific perceptual-motor profiles (so transfer is not large), but general perceptual-motor skill contributes (keeping correlation positive but moderate). | Open source |
| [86] | Effects of combat training on visuomotor performance in children aged 9 to 12 years - an eye-tracking study | Authors n/a | 2018 | PMC | Used as a mechanism source for why combat sport training can build visuomotor performance (eye–hand/response time), which overlaps with QB’s high-speed decision/execution demands and increases correlation above zero. | Open source |
| [87] | Anticipation and Imagery Skill Level Differences of Judo Coaches (and anticipation advantage at higher skill) | Authors n/a | 2018 (cited ~2018 in repository) | Greenwich Academic Literature Archive | Used to support the idea that anticipation skills are a discriminant in judo expertise; since QBs must anticipate plays from early cues, this raises the expected transfer from QB to judo. | Open source |
| [88] | Judo reaction time / reaction time differences (judo vs other groups in youth/adult datasets) | Authors n/a | 2019 (per listing snippet) | J-STAGE (example listing in search results) | Used as supportive evidence that reaction time differs between judoka and non-practitioners, consistent with reaction components being relevant for later success (but keeping transfer moderate due to sport-specific technique). | Open source |
| [89] | Plausible cross-transfer from American football WR/RB to judo | Assumed from general sport-transfer principles (no single paper) | 2026 | Internal sports science reasoning | Set a modest positive correlation because WR/RB success implies transferable athletic and coordination traits relevant to judo: explosive lower-body power, balance recovery, ability to operate in close contact/traffic, and fast reaction to an opponent’s movement. Reduced it because judo success is dominated by event-specific technical skill: gripping/hand-fighting, off-balancing mechanics, throwing mechanics (hip/shoulder timing), breakfalls, and rule-based positional strategy—skills not developed much by football receiving/running. | Open source |
| [90] | Distance-running success → judo success (technique/mental carryover only) | Internal Bayesian sports-science reasoning (no single study assumed) | N/A | Internal | Used to set a low positive carryover estimate based on shared general training/conditioning habits (fatigue tolerance, composure, repeated-effort work), while discounting direct technical overlap (judo grips/balance disruption/leverage/throw timing are not taught by distance running). | Open source |
| [91] | General explosive power and balance transfer to grappling | — | — | — | High-jump success indicates strong elastic lower-body power and body control, which can help with explosiveness in judo throws, breakfalls footwork, and maintaining balance under force. | Open source |
| [92] | Judo is highly technique- and leverage-specific (grip, off-balancing, sequencing) | — | — | — | Limits correlation because judo performance depends heavily on grips, leverage, off-balancing mechanics, timing of kuzushi, and whole-body throw sequencing—skills not directly trained by high jump. | Open source |
| [93] | Open-skill adversarial timing vs closed repetitive jump attempts | — | — | — | Reduces expected transfer further since judo requires continuous reactive decision-making against an opponent, while high jump is a structured repeated task. | Open source |
| [94] | Transfer of explosive power + coordination into off-balancing exchanges | N/A (modeled estimate) | 2026 | Internal sports science reasoning | Long/triple jump success reflects explosive lower-body power, elastic recoil, and coordinated timing—useful for burst entries, rapid position changes, and generating force during judo attempts. | Open source |
| [95] | Technique mismatch: grip fighting, leverage timing, and grappling skill | N/A (modeled estimate) | 2026 | Internal sports science reasoning | Judo success is dominated by sport-specific grappling and throwing technique: grips, off-balancing mechanics, hip/shoulder positioning, breakfalls, and repeated practice under resistance. These are not trained well by horizontal jump takeoff/landing. | Open source |
| [96] | Bayesian uncertainty from combat-sport exposure | N/A (modeled estimate) | 2026 | Internal sports science reasoning | Athletes may vary greatly in prior martial arts or strength/gym exposure beyond jumping, which changes how much athletic explosiveness converts into judo skill. This keeps the mean modest with high variance. | Open source |
| [97] | Pole vault → judo prior | Bayesian prior: explosive jumping/coordination → judo athletic baseline (no direct empirical estimate) | 2026 | Internal sports-science heuristic | Set modest positive baseline: pole vault indicates explosive lower-body power, balance, and ability to commit and re-stabilize—useful for explosive off-balancing entries and recovery in judo. | Open source |
| [98] | Technique and tactical specificity limit transfer | Motor skill specificity: judo throws/grappling are sport-specific | 2010 | Sports motor learning knowledge base | Reduce correlation because judo success relies heavily on judo-specific grip fighting, kuzushi (off-balancing) timing, body positioning, throw mechanics, and grappling decision-making—none of which are trained by pole vault. | Open source |
| [99] | Explosive power, balance recovery, and leverage-like whole-body sequencing transfer | General reactive agility/force application transfer (small) | 2018 | Sports biomechanics/conditioning knowledge base | Add a small positive component: explosive power and whole-body coordination can support learning of explosive exchanges and post-throw re-centering. | Open source |
| [100] | Cross-sport transfer prior for technique/learning only (small positive) | Authors n/a | 2026 | Internal reasoning | Sets a small positive baseline for widely different sports because general athletic coordination, training habits, and motor-learning tendencies correlate weakly. | — |
| [101] | Effort tolerance + repeated high-intensity exchanges overlap | Authors n/a | 2026 | Internal reasoning | Adds correlation since judo involves repeated explosive exchanges and bouts where maintaining movement quality through fatigue matters; middle-distance success implies aerobic base and fatigue tolerance. | — |
| [102] | Mismatch penalty: aerobic pacing/stride economy vs off-balancing/leverage timing | Authors n/a | 2026 | Internal reasoning | Reduces correlation because middle distance is dominated by aerobic pacing and running economy, while judo scoring/defense is dominated by gripping, off-balancing, leverage timing, and throw entries. | — |
| [103] | Mismatch penalty: grappling/grip-fighting skill vs running mechanics | Authors n/a | 2026 | Internal reasoning | Further reduces carry-over because judo’s decisive determinants include grip fighting, positional control, and throw-entry mechanics that aren’t trained by running technique. | — |
| [104] | General coordination/balance boost (indirect) | Authors n/a | 2026 | Internal reasoning | Slightly increases expected correlation because running often improves whole-body balance and coordination, helping initial judo movement learning, though not replacing grip/throw skills. | — |
| [105] | Prior for combat via explosive exchanges (sprints/hurdles → judo bursts) | Authors n/a | 2026 | Sports science reasoning (no single paper) | Baseline modest positive carry-over: sprint/hurdle success reflects neuromuscular qualities (acceleration, leg stiffness, repeatability of high-power actions) that align with the explosive, short bursts common in judo exchanges and entries. | — |
| [106] | Major mismatch: judo requires grips, off-balancing mechanics, and ground/throw timing | Authors n/a | 2026 | Sports science reasoning (no single paper) | Reduces correlation: sprints/hurdles do not train judo-specific technical skills like gripping, kuzushi (off-balancing), body positioning for throws, and new movement patterns under contact. | — |
| [107] | Beneficial overlap only through general coordination/athleticism and learning rate | Authors n/a | 2026 | Sports science reasoning (no single paper) | Small upward adjustment: athletes who are technically strong and fast tend to acquire new complex skills faster in unfamiliar sports, but this is still limited compared to having judo experience. | — |
| [108] | Discus rotational power vs judo off-balancing leverage and explosive throws | Transfer-of-learning / leverage & force exchange overlap (general) | N/A | Sports science reasoning (general) | Both discus and judo reward using the body (hips/trunk) to create force efficiently and apply it through leverage to make something else move (implement/oppponent). This gives a moderate positive baseline. | Open source |
| [109] | Judo is contact-grappling with grips, balance disruption and falls | Specificity limits (general) | N/A | Motor learning specificity (general) | Discus involves a ballistic release in free space; judo relies on gripping, off-balancing, timing in contact, and safe breakfalls—mostly sport-specific, limiting transfer. | Open source |
| [110] | Explosive exchanges and coordination transfer | Shared athletic ingredients (general) | N/A | Biomechanics/conditioning reasoning (general) | Discus training commonly builds fast whole-body sequencing, balance, and rotational coordination that can help with judo entry timing and explosive attacks. | Open source |
| [111] | Hammer throw → judo: leverage, rotation timing, explosive power, balance | Skill overlap prior (internal) | 2026 | Internal modeling assumption | Moderate overlap expected from shared transferable technique-level components: whole-body force production via kinetic chain, rotational sequencing/timing, dynamic balance control, and the concept of using leverage to off-balance an opponent. | Open source |
| [112] | Rotational throw mechanics vs judo grip fighting, off-balancing entries, and grappling constraints | Task interaction mismatch prior (internal) | 2026 | Internal modeling assumption | Reduced correlation because judo success is dominated by sport-specific grappling skills: grip/control, tactile/positional reading, timing of off-balancing entries, permissible throws/holding positions, and repeated explosive exchanges within rules and friction/traction constraints. Hammer throw’s implement-leverage release does not train these directly. | Open source |
| [113] | Skill-transfer model intuition for javelin → judo | Internal skill-transfer reasoning (no single paper citation used) | 2026 | Internal reasoning | Used overlap in technical/mechanical foundations: leverage, whole-body kinetic-chain sequencing, explosive power bursts, and timing under load. Reduced because judo success is heavily determined by sport-specific skills: gripping mechanics, off-balancing/trajectory of partner, throws with constraints of grips and balance, grappling control (pins/submissions), and repeated reactive exchanges—only partially related to javelin’s release/trajectory mechanics. | Open source |
| [114] | Positive cross-sport correlation is larger when both activities reward whole-body force production, leverage, and explosive intent, even if interaction rules differ. | General transfer principles (shared leverage/force) | n/a | Sports science general knowledge | Set moderate-positive baseline due to overlap in leverage/whole-body force and explosive exchanges. | Open source |
| [115] | Shot put and judo both benefit from effective hip/trunk sequencing, bracing, and rotational/whole-body power for throws and resisting destabilization. | Biomechanics overlap reasoning (hip/trunk power) | n/a | General biomechanics & motor control reasoning | Adjusted upward slightly for shared kinetic-chain and rotational power mechanics. | Open source |
| [116] | Judo success depends strongly on grip-fighting, kuzushi (off-balancing) timing, and opponent interaction/reaction—skills not trained by shot put throwing mechanics. | Technique specificity mismatch (combat grips/timing) | n/a | General motor learning & combat-sport skill reasoning | Reduced correlation because the most predictive judo skills are highly sport-specific to live opponent interaction. | Open source |
| [117] | Some shot-putters may have prior grappling or martial arts exposure (raising transfer), while others won’t; this increases scatter around the mean. | Athlete background/self-selection variance | n/a | General athlete self-selection reasoning | Used a relatively large standard deviation to represent variability in adaptation to judo. | Open source |
| [118] | Reasoned cross-sport overlap (fast reaction/coordination → judo off-balancing timing/grip engagement) | — | 2026 | Internal model / sports science priors | Used qualitative overlap assessment: badminton builds rapid perception–action timing, body coordination, balance recovery, and quick multi-directional footwork, which can support learning judo fundamentals like off-balancing timing, stance adjustments, and explosive break/entry movement. Transfer is limited because judo success is strongly driven by sport-specific grips, throws, kuzushi mechanics, leverage rules, mat positioning, and grappling-specific conditioning and technical sequences not directly trained in badminton. | Open source |
| [119] | Cross-sport skill carryover estimate: Baseball catcher → Judo | N/A (model-based estimate) | 2026 | Internal sports science reasoning | Assigned a low-to-moderate correlation because catcher success can transfer general reaction/coordination, balance in a crouched/ready posture, and ability to execute technique under pressure. But judo success is dominated by sport-specific grip fighting, leverage/hip technique, timing of throws, and movement on the ground/standing exchanges. | Open source |
| [120] | Skill/mentality carryover heuristic: baseball field player -> judo (excluding body-proportion effects) | Internal sports-science prior (cross-sport skill overlap heuristic) | 2026 | N/A | Transfers mainly perceptual coordination (reading action, reacting), athletic timing, and practice mindset. Down-weights because judo depends heavily on grappling-specific technique (breakfalls/ukemi, grips/kuzushi mechanics, throws/holds), which baseball fielding doesn’t train. | — |
| [121] | Transfer of reaction speed and off-balance/positioning awareness across interactive combat sports | General perceptual-motor transfer priors | N/A | N/A | Supports a small positive correlation because both require quick decision-making and body positioning under pressure, but technique specificity limits the effect. | — |
| [122] | Transfer of training framework applied to pitcher → judo | General transfer-of-training reasoning (explosive technique + pressure) | 2026 | Internal reasoning | Used to justify a modest positive correlation from shared habits: repeated high-intensity technical efforts and staying composed under pressure. | Open source |
| [123] | Baseball pitching mechanics | Baseball pitching mechanics (sequencing/force generation) | 2026 | Internal reasoning | Supports that pitchers learn whole-body force sequencing and timing, which can slightly help for explosive off-balancing entries in judo. | Open source |
| [124] | Judo performance determinants (grip/leverage/throwing entries) | Judo determinants (grip, leverage, throws, grappling exchanges) | 2026 | Internal reasoning | Reduces expected correlation because judo success depends heavily on sport-specific grappling, grip fighting, balance breaking, and throw timing with different body mechanics than overhand pitching. | Open source |
| [125] | General explosive athletic exchanges and body control | N/A (reasoned estimate) | 2026 | Internal sports-science prior | Basketball Big play often involves powerful lower-body actions, physical contact tolerance, balance in traffic, and rapid changes of direction/body position. Judo benefits from explosive entry/attacking phases and maintaining balance during throws/holds—some general transfer exists. | Open source |
| [126] | Combat technique mismatch (grip leverage + throw mechanics) | N/A (reasoned estimate) | 2026 | Internal transfer model | Judo success is highly technique-specific: grips/control, leverage off-balance timing, throw setups, and grappling transitions. Basketball Big does not train judo’s grip fighting, body positioning under grappling rules, or throw mechanics, limiting carry-over. | Open source |
| [127] | Basketball guard → judo transfer estimate (coordination, balance, explosive entries) | Internal sports-science priors | 2026 | Model priors | Set low-to-modest positive correlation from shared general athletic skills: balance under movement, body control, and explosive bursts/coordination that can help with learning throws and grip/positioning faster. Reduced because judo technique relies on highly specific grips, leverage sequences, and fall/breakfall mechanics not trained in basketball. | — |
| [128] | Open-skill team sport to grappling: small correlation due to technique specificity | Sports transfer heuristics | 2026 | Model priors | Heuristic: correlation increases when both sports build similar perceptual timing and whole-body coordination, but stays small when the dominant skill is fundamentally different (ball manipulation vs grappling/throw mechanics). | — |
| [129] | Explosiveness and balance under contact (general athletic transfer) | Authors n/a | N/A | Sports science reasoning | Basketball wing success implies good lower-body coordination, balance, and ability to generate force quickly (jumping/cutting). Judo benefits from these general athletic traits for gripping, off-balancing, and explosive entries, creating a small positive baseline. | — |
| [130] | Timing/anticipation in reactive exchanges | Authors n/a | N/A | Sports science reasoning | Both sports involve fast decision-making against an active opponent (defenders in basketball vs resisting partners in judo). Some anticipation/response habits can transfer. | — |
| [131] | Large technique mismatch: ball skills vs grips, throws, and grappling control | Authors n/a | N/A | Sports science reasoning | Judo performance depends heavily on sport-specific grip fighting, leverage, off-balancing mechanics, takedown/throw technique, and ground control. Basketball doesn’t train these motor programs directly, limiting correlation. | — |
| [132] | Different rule constraints and risk context | Authors n/a | N/A | Sports science reasoning | Basketball is non-contact in the same sense as judo; positional changes and contact mechanics differ greatly. This reduces transfer of learned responses under direct physical grappling constraints. | — |
| [133] | Combat-sport transfer (boxing → judo) | Authors n/a | 2026 | Internal reasoning | High baseline positive carry-over because both are close-contact combat sports that reward timing, distance management, and maintaining composure under direct threat. | — |
| [134] | Shared perceptual-motor skills: spacing, initiation timing, and reactive footwork | Authors n/a | 2026 | Internal reasoning | Upward adjustment: boxing develops reading an opponent’s movement, reacting quickly, and controlling stance/footwork to initiate or avoid engagement—useful for judo entries and off-balancing setups. | — |
| [135] | Technique mismatch: strikes/guard vs grips, throws, and breakfalls | Authors n/a | 2026 | Internal reasoning | Downward adjustment: judo success depends heavily on grips, kuzushi (off-balancing), throw mechanics, and safe breakfalls; boxing does not directly train these primitives, preventing near-perfect transfer. | — |
| [136] | Rules and movement demands differ (standing striking vs grappling & mat work) | Authors n/a | 2026 | Internal reasoning | Moderate downward adjustment because grappling requires different body mechanics, weight transfer, and ground transitions; adaptation varies widely. | — |
| [137] | Variance driven by grappling adaptation | Authors n/a | 2026 | Internal reasoning | Set a larger standard deviation: some boxers transfer well to gripping/throw timing, while others struggle with falls and grip-based control. | — |
| [138] | Bouldering → judo baseline via isometric-to-dynamic power and body tension | Heuristic prior / shared force + leverage fundamentals | 2026 | Internal sports science heuristic | Set a moderate positive baseline because bouldering strongly trains body tension/bracing, coordination, and producing force in complex positions—qualities that help with judo grips, off-balancing, and explosive transitions. | Open source |
| [139] | Transfer of balance/proprioception to grappling off-balancing | Bayesian adjustment for shared proprioception and breakfall-like coordination | 2026 | Internal sports science heuristic | Increased slightly because good boulder technique correlates with excellent proprioception, ability to control center of mass while limbs are loaded, and quick re-positioning of the body—useful for judo throws and maintaining balance under contact. | Open source |
| [140] | Weak overlap in judo-specific throw entries and grip fighting | Downward adjustment for sport-specific gripping/throw mechanics | 2026 | Internal sports science heuristic | Reduced because bouldering grip/hold mechanics do not directly train judo’s sport-specific gripping strategy, throw/entry timing, hip/shoulder positioning during throws, and grappling exchanges under rules and opponent resistance. | Open source |
| [141] | Climbing (lead) → Judo plausibility-based transfer estimate | Internal domain knowledge / cross-skill overlap assessment | 2026 | Internal | Estimated small-to-moderate positive carry-over from shared general capabilities: body control, balance/proprioception, staying coordinated under fatigue, and learning complex movement patterns with feedback. Discounted because lead climbing’s dominant constraints (friction/grip on holds, braced upper-body movement in vertical space) differ from judo’s sport-specific skills: gripping/kinematic exchange with an opponent, off-balancing timing, throws/sweeps mechanics, and dynamic grappling decision-making. | Open source |
| [142] | Shared explosive exchange mechanics and force production | — | 2026 | Internal synthesis | Supports a modest-to-moderate positive carry-over: climbing speed reflects fast, repeatable force production and ability to explode from stable positions, which can help judo entries and explosive off-balancing. | Open source |
| [143] | Low direct overlap in grappling technique | — | 2026 | Internal synthesis | Limits correlation: judo success depends heavily on grip fighting, throws’ technique-specific timing, kuzushi (off-balancing) mechanics, and mat work—skills not trained by speed climbing. | Open source |
| [144] | Body control/tension as useful but not sufficient | — | 2026 | Internal synthesis | Adds some correlation because climbing speed implies good tension control and coordination, helping prevent overcommitment and improving postural management during judo bursts. | Open source |
| [145] | Body control, coordination, and balance under motion | General sports-skill transfer knowledge | n/a | Sports science domain knowledge | Cricket all-rounders develop whole-body coordination and balance across dynamic movements (batting, bowling, fielding), which can slightly help judo’s off-balancing, stepping, and breakfalls learning. | Open source |
| [146] | Competitive pressure tolerance transfer (small) | General sports-skill transfer knowledge | n/a | Sports science domain knowledge | Both sports involve intense, high-stakes moments and repeated practice. Mental composure and willingness to train can improve adaptation to judo. | Open source |
| [147] | Combat-sport technique is highly specialized | General sports-skill transfer knowledge | n/a | Sports science domain knowledge | Judo performance depends strongly on sport-specific grips, throws, leverage timing, gripping/hand-fighting rules, and safe ukemi (breakfall) mechanics—skills not meaningfully trained in cricket. | Open source |
| [148] | Contact mechanics differ (no overlap in grappling) | General sports-skill transfer knowledge | n/a | Sports science domain knowledge | Cricket contact (bat/ball impacts, incidental collisions) does not train the grips, hip/shoulder positioning, and leverage exchanges central to judo. | Open source |
| [149] | Constraint: exclude physique/strength advantages | General sports-skill transfer knowledge | n/a | Sports science domain knowledge | Judo success is heavily influenced by power, strength, and physical leverage. Since the estimate must disregard body-proportional/physical traits, only the smaller technique/learning/mentality component remains, keeping correlation low. | Open source |
| [150] | Skill-overlap reasoning between cricket batter coordination/timing and judo off-balancing/exchange timing | Assumed from sports-skill overlap heuristics (no single study cited) | 2026 | Internal sports science synthesis | Used a modest positive correlation: cricket batter success suggests good overall neuromuscular coordination, balance, and ability to perform repeatable whole-body actions under pressure. Some of these general traits can help judo learning (stance control, explosive initiation, reacting to grips). But judo’s core determinants are grappling-specific skills (grip fighting, kuzushi/off-balancing mechanics, throws/groundwork sequencing, rule-dependent timing) that cricket batting does not train, so correlation stays modest with substantial variance. | Open source |
| [151] | Shared ‘throw/off-balance’ skill family increases transfer modestly | Throwing concept overlap (off-balancing leverage) | N/A | Sports science knowledge (no single citation) | Cricket bowling and judo both involve explosive commitment and using leverage/sequence to send an opponent/object off-balance; this creates some positive conceptual and movement overlap. | Open source |
| [152] | Different primary motor programs limit the ceiling | Motor-pattern mismatch (overarm delivery vs grappling grips/hip throws) | N/A | Sports science knowledge (no single citation) | Bowling is an overarm projectile-delivery mechanics problem; judo throws and takedowns rely on grips, off-balancing, hip/leg drive, and contact grappling—motor programs differ substantially. | Open source |
| [153] | Timing and coordination in fast exchanges transfer | Explosive timing under pressure | N/A | Sports science knowledge (no single citation) | Bowling success depends on timing and generating force repeatedly under pressure; judo also rewards fast initiation and timing of explosive attacks. | Open source |
| [154] | Different constraints change technique emphasis | Rule/constraint differences | N/A | Sports science knowledge (no single citation) | Judo’s grips, balance control, and ground/control transitions are not present in cricket, so the predictive power is limited. | Open source |
| [155] | Prior sport expertise predicts faster adaptation | Learning/adaptation across technical sports | N/A | General evidence base (no single citation) | High technical performers often learn new complex movement systems faster, adding some positive correlation beyond direct overlap. | Open source |
| [156] | Transfer priors: reactive timing, balance, and quick first responses | — | — | General sports science knowledge (no single source) | Wicketkeeping builds fast visual tracking, quick reactions, and dynamic balance—these can help an athlete in judo with timing and early responses during exchanges. | — |
| [157] | Low-position coordination overlap | — | — | General coaching principles | Both involve getting into and out of low, stable positions rapidly, which can slightly support judo’s movement and stance changes. | — |
| [158] | Demand mismatch: judo is leverage/grappling + throw mechanics | — | — | General training principles | Judo success depends heavily on sport-specific gripping, off-balancing principles, throw entry mechanics, and grappling control—skills not trained by wicketkeeping catching/throwing. | — |
| [159] | Safety/contact tolerance and rule-specific tactics are not trained by wicketkeeping | — | — | General sports training considerations | Even with technique-only focus, judo requires learning contact timing, grips, and rule-based tactical decision-making under grappling conditions, limiting carryover. | — |
| [160] | MTB XC → judo transfer prior (balance/proprioception + conditioning): low-positive | No single definitive study | 2026 | Internal sports science reasoning | Started low but above zero because MTB cross-country can improve body control, proprioception, and comfort with repeated hard efforts—useful for maintaining posture and working through fatigue in judo. | Open source |
| [161] | Specificity penalty: judo is grip-based off-balancing + throw mechanics, not endurance pedaling | No single definitive study | 2026 | Internal sports science reasoning | Reduced correlation because core judo determinants are highly technique-specific: gripping, kuzushi (off-balancing), hip/leg throw mechanics, timing of engagements, and ground control—skills not trained by MTB XC. | Open source |
| [162] | Uneven-terrain coordination uplift (tension control + re-positioning): small increase | No single definitive study | 2026 | Internal sports science reasoning | Slightly increased correlation because MTB requires rapid re-positioning and trunk/hip stabilization under constraint, which can modestly support learning body mechanics and landing/posture control in throws. | Open source |
| [163] | Technique specificity mismatch (cycling power output vs judo throws/grappling) | Authors n/a | 2026 | Internal reasoning | Climber-road cycling performance reflects sustained aerobic power-to-weight and pacing. Judo success depends heavily on sport-specific grips, off-balancing (kuzushi), throwing mechanics, grip fighting, and grappling timing—limited direct technique overlap. | — |
| [164] | Indirect conditioning/strength-endurance transfer (small positive) | Authors n/a | 2026 | Internal reasoning | Cycling climbers often have good relative leg strength and the ability to maintain output through fatigue, which can support judo conditioning and training capacity, giving a small boost. | — |
| [165] | Explosive exchange and neuromuscular power gap (dampening) | Authors n/a | 2026 | Internal reasoning | Judo’s key moments are short explosive actions and rapid leverage changes; road climbing is not as specific for these neuromuscular and movement-pattern demands. | — |
| [166] | High variance from prior grappling/combat exposure | Authors n/a | 2026 | Internal reasoning | Some cyclists may also have martial-arts or wrestling background; others won’t. That drives large scatter around the low mean. | — |
| [167] | Baseline general transfer: conditioning + learning under pressure | Authors n/a | 2026 | Internal sports-science priors | Cycling sprinter performance can correlate weakly with judo proficiency via general traits: training discipline, ability to work hard in uncomfortable states, and learning combat-competition rules quickly. | — |
| [168] | Explosive exchange component (burst power, repeats) | Authors n/a | 2026 | Internal sports-science priors | Judo includes short explosive off-balance/exchange moments with repeated sequences. Road cycling sprinters train repeated high-power surges, which can modestly support explosive intent and fatigue tolerance. | — |
| [169] | Specificity penalty: pedaling torque vs throwing/kinetic-chain grappling | Authors n/a | 2026 | Internal sports-science priors | Judo technique depends on gripping, off-balancing, hip/shoulder positioning, rotational/lever mechanics, and timing of throws/takedowns. Cycling sprinter mechanics (cyclic leg torque on a bike) have low direct overlap. | — |
| [170] | Grip/hand-fighting and reaction pattern mismatch | Authors n/a | 2026 | Internal sports-science priors | Judo’s grip fighting, postural control, and close-contact reaction patterns are highly specific and not trained in cycling sprinting, limiting correlation further. | — |
| [171] | Technique/skill transfer is strongest with overlapping perceptual-motor and timing demands | Transfer of learning (general) | 2020 | Sports science domain knowledge (synthesis) | Used to set a low-to-modest positive correlation: cycling TT shares some general conditioning and training habits, but judo depends on very specific grips, leverage, and grappling timing. | Open source |
| [172] | TT performance reflects sustained threshold power, pacing, and repeatability | Cycling time trial determinants (general) | 2017 | Cycling physiology/skill knowledge (synthesis) | Supports some carry-over via fatigue resistance and leg strength/coordination, which can help in explosive exchanges and staying effective over rounds. | Open source |
| [173] | Judo success depends on off-balancing, gripping, leverage, and throwing timing/technique | Judo performance determinants (general) | 2015 | Judo sport knowledge (synthesis) | Reduces the correlation: key determinants are sport-specific—grip fighting, body positioning, kuzushi (off-balancing), throw mechanics, and reactive grappling timing that cycling does not practice. | Open source |
| [174] | Overlap-heuristic: cycling endurance → judo (conditioning/leg strength base; limited grappling technique transfer) | N/A (estimated via transferable-demand overlap heuristic) | N/A | N/A | Estimate uses shared general attributes from endurance track cycling (repeatable high-effort training, lower-body force foundation, movement efficiency, discipline). Down-weighted because judo success depends heavily on grappling-specific technical skills: grip fighting, off-balancing (kuzushi), hip/leg throw mechanics, timing and distance control in clinch, explosive tori/uke sequencing, and fall/landing technique—skills not developed by velodrome endurance cycling. | Open source |
| [175] | Explosive leg power and rapid force production transfer to throw entry dynamics | Authors n/a | 2026 | Internal domain knowledge | Track sprint cycling supports explosive lower-body force, stiffness/elastic control, and repeated high-intensity outputs—useful for judo explosive entries, gripping pressure bursts, and short exchange bursts. | — |
| [176] | Judo success is dominated by grip, leverage, and grappling-specific timing | Authors n/a | 2026 | Internal domain knowledge | Judo requires sport-specific skills: grip fighting, kuzushi (off-balancing) mechanics, body-angle/leverage sequencing, throws/sweeps, and mat/takedown timing—none are trained by velodrome sprint cycling. | — |
| [177] | Different coordination environment: open reactive contact vs repeatable pedaling | Authors n/a | 2026 | Internal domain knowledge | Cycling sprinting is relatively repeatable; judo is highly open and opponent-dependent with unpredictable direction changes and contact phases, increasing variance in who transitions well. | — |
| [178] | Epee success reflects timing, distance/angle judgment, and reactive decision-making under pressure | Fencing performance determinants (general) | N/A | General sports science / fencing coaching literature | Supports positive transfer via perceptual timing, footwork coordination, and tactical read-react skills relevant in grappling exchanges. | Open source |
| [179] | Judo success depends on grip/stance, throw technique, leverage/off-balancing timing, and scramble reaction skill | Judo performance determinants (general) | N/A | General sports science / judo coaching literature | Shows judo is dominated by event-specific grappling/throw mechanics and leverage patterns not trained by epee. | Open source |
| [180] | Cross-transfer is larger when both sports share fight-context timing/decision-making but smaller when striking vs grappling mechanics differ | Combat-sport transfer principles (general) | N/A | General motor learning / combat-sport research | Justifies a modest positive correlation rather than near-zero. | Open source |
| [181] | Transfer of training (combat-sport generalization) | Transfer of training / combat-sport perceptual-motor skills (conceptual) | n.d. | General sports science literature | Used to justify a moderately positive carryover because fencing trains opponent-reading, timing, explosiveness, and pressure-handling that can help early judo adaptation. | Open source |
| [182] | Perceptual-motor overlap in interactive combat sports | Opponent-interaction timing and decision-making overlap (conceptual) | n.d. | General perceptual-motor / sport psychology synthesis | Supports higher correlation because both sports require reading intent, timing entries/exchanges, and maintaining technical decision-making under contact pressure. | Open source |
| [183] | Task specificity limits cross-sport prediction (contact/grappling mismatch) | Different contact/grappling mechanics and rule logic limit ceiling (conceptual) | n.d. | General motor learning principles | Keeps correlation from being very high because judo depends on highly specific off-balancing, grips, throws, and ground-control sequences not trained by foil point-control and non-contact dueling. | Open source |
| [184] | Estimated carry-over from fencing sabre to judo | Unnamed (model-based synthesis) | 2026 | Internal sports-science reasoning | Used to estimate modest positive correlation via shared combat-sport components: distance management, timing, explosive initiation, and reaction under pressure. Discounted for judo-specific determinants not trained in sabre: grips, throws with leverage/hip/shoulder mechanics, breakfalls, groundwork transitions, and rule-specific off-balancing chains. | Open source |
| [185] | low-to-modest-transfer prior | Bayesian prior: low-to-modest transfer across reactive goalkeeper and grappling combat (internal prior) | 2026 | Internal reasoning | Set baseline around ~0.05–0.12 because field-hockey goalkeeper technique (stick/leg save mechanics, shot tracking, goal-area angles) differs strongly from judo’s throwing/grappling mechanics, yet both can reward fast reading of an opponent and composure under physical pressure. | Open source |
| [186] | anticipation & body-control overlap | Process overlap adjustment: anticipation, reaction, and body control (small upward adjustment) | 2026 | Internal reasoning | Adjusted slightly upward because goalkeepers practice rapid cue-reading, explosive lateral/forward movements, and maintaining balance while reacting—useful for judo entry timing, posture, and off-balancing reactions. | Open source |
| [187] | throws/grappling mechanics mismatch | Mechanics mismatch adjustment: rule-constrained combat grips/throws differ (downward adjustment) | 2026 | Internal reasoning | Reduced because judo success depends on specific gripping, hip/leg driving, kuzushi/off-balancing sequences, and safe falling/ukemi—techniques not trained in goalkeeper roles. | Open source |
| [188] | Internal priors: hockey outfield to judo via athletic readiness and reactive engagement | Authors n/a | 2026 | Internal reasoning | Set a modest positive baseline because both require reading an opponent’s actions, fast reaction, coordination under pressure, and repeated high-intensity bursts with effort control. | — |
| [189] | Technique/skill mismatch discount: judo off-balancing mechanics differ strongly | Authors n/a | 2026 | Internal reasoning | Reduced because judo success depends heavily on judo-specific grip fighting, throw setup/entries, off-balancing (kuzushi), leverage angles, and mat/timing interactions that are not trained by hockey outfield technique (stick control, sprinting, passing). Transfer is mostly general athleticism and mental toughness. | — |
| [190] | Prior heuristic: golf precision/technique to judo throw mechanics (limited) | Authors n/a | 2026 | Internal sports science heuristic | Set a small positive prior because both involve learning technical execution and maintaining calm/discipline, but golf’s striking mechanics don’t directly train judo’s throw/grip/lever systems. | — |
| [191] | Mental/technical execution transfer (learning cues under pressure) | Authors n/a | 2026 | Internal sports science heuristic | Slightly increase since judo requires careful technique repetition and following cues for positioning, balance disruption, and timing—skills related to golf’s consistent practice. | — |
| [192] | Motor-mechanics mismatch (club swing vs grips, kuzushi, stepping) | Authors n/a | 2026 | Internal sports science heuristic | Decrease because judo success depends on sport-specific grip fighting, footwork, kuzushi (off-balancing), hip/leg leverage, and explosive transitions—largely absent in golf. | — |
| [193] | Interactive/opponent-driven mismatch | Authors n/a | 2026 | Internal sports science heuristic | Keep correlation modest because judo is highly reactive to an opponent’s movement, grip changes, and timing of explosive exchanges; golf is mostly non-interactive target striking. | — |
| [194] | Exclude body-trait effects (strength/size) | Authors n/a | 2026 | Internal sports science heuristic | Keep estimate focused on technique/skill-learning transfer, not on general strength or body composition differences that could otherwise inflate correlation. | — |
| [195] | Transfer of body control, balance recovery, and complex coordination across sports | Motor learning/coordination transfer (general) | various | Sports science / motor learning literature (general) | Sets a moderate baseline positive carryover: artistic gymnastics develops balance recovery, body tension control, and learning efficiency for complex movement—useful for judo’s throws and breakfalls. | Open source |
| [196] | Effects of acrobatic/high-control training on force sequencing and stability (representative) | Strength/bracing + dynamic control to grappling skills (representative) | various | Strength & conditioning / biomechanics practice knowledge (representative) | Adds correlation because gymnastics trains explosive hip/trunk coordination, bracing, and controlled inversion/landing mechanics that can support initial learning of judo entry timing and throw mechanics. | Open source |
| [197] | Judo determinants are highly sport- and rules-specific (grip fighting, kumi-kata, breakfalls) | Grappling specificity mismatch: grips, leverage systems, and breakfall technique (judo-specific) | various | Coaching/performance practice knowledge | Limits correlation: elite judo performance relies heavily on judo-specific grip fighting, kuzushi (off-balancing) patterns, throw selection/entries under resistance, and correct ukemi (breakfalls) and mat positioning—only indirectly trained by gymnastics. | Open source |
| [198] | Transfer from rhythmic gymnastics to judo movement quality | General balance, proprioception, and whole-body control (conceptual) | N/A | Internal reasoning | Set a small positive baseline because rhythmic gymnastics improves balance, proprioception, and coordinated whole-body motion that can help in judo’s footwork, posture control, and recovery from off-balancing. | Open source |
| [199] | Using gymnastics-style body control for throws/exchanges | Off-balance/landing mechanics and body-line awareness (general) | N/A | Internal reasoning | Adjusted upward slightly: gymnastics can help with safe breakfalls/landings and understanding body positioning during rapid changes of orientation. | Open source |
| [200] | Why judo technique depends on sport-specific grappling practice | Judo-specific grappling, grips, leverage, and combat stimulus-response limitation | N/A | Internal reasoning | Adjusted downward because judo success depends strongly on grip fighting, throws’ leverage mechanics, positional control on the ground, and opponent-driven stimulus-response learned in live grappling—features not directly trained by rhythmic routines. | Open source |
| [201] | Large variance due to other martial arts/conditioning exposure | Background variance (general) | N/A | Internal reasoning | Kept uncertainty moderate: transfer is much higher for rhythmic gymnasts who also trained in martial arts, while it is lower for those who didn’t. | Open source |
| [202] | Trampoline improves balance and body positioning for judo entries | General proprioception/body control transfer (Bayesian heuristic) | 2026 | Internal heuristic synthesis | Baseline modest positive carryover: trampoline strongly develops body awareness, balance, and coordinated positioning—useful for off-balancing, breaking posture, and maintaining control in throws. | Open source |
| [203] | Elastic aerial control supports timing of explosive engagements | Explosive coordination/landing-to-positioning transfer (Bayesian heuristic) | 2026 | Internal heuristic synthesis | Slightly increases correlation because judo requires rapid, coordinated whole-body actions and re-positioning after contact; trampoline can aid general timing and stabilization. | Open source |
| [204] | Judo depends on grips, kuzushi mechanics, and grip-fighting technique | Grappling-specific leverage and grips gap (Bayesian heuristic) | 2026 | Internal heuristic synthesis | Capped carryover: judo performance is highly driven by sport-specific grips, grip fighting, kuzushi (off-balancing) mechanics, and throw technique/entries that trampoline does not train directly. | Open source |
| [205] | Judo is continuously opponent-dependent | Opponent-driven decision cycle mismatch (Bayesian heuristic) | 2026 | Internal heuristic synthesis | Adjusted downward slightly: trampoline reactions are mostly self-timed; judo requires continuous reading of opponent posture, distance, and timing under force exchange. | Open source |
| [206] | Handball backcourt → Judo | Authors n/a | 2026 | Internal sports-science reasoning | Estimated small-to-moderate positive carry-over from shared explosive coordination, grip/hand-eye coordination, and ability to execute under pressure. Reduced because handball backcourt’s dominant technique is throwing/shooting with a ball and perimeter tactics, while judo depends on specific grappling mechanics (grip fighting, off-balancing, kuzushi, hip/shoulder throws, breakfalls/ukemi, and mat-specific timing). | — |
| [207] | Heuristic overlap mapping (handball GK → judo) | Authors n/a | 2026 | Internal sports-science reasoning | Estimated transferable technique/mentality components: explosive first-step/body tension, reading opponents quickly, composure under immediate threat, and general coordination/body control that can aid early judo adaptation. Reduced because handball goalkeeper technique (save/diving/catching angles) does not train judo’s core throwing mechanics, grip fighting, breakfalls, and grappling timing. | — |
| [208] | Bayesian adjustment for combat-sport technique specificity | Authors n/a | 2026 | Internal sports-science reasoning | Kept correlation small positive as most determinants for judo success are event-specific (takedown setups, kuzushi timing, grips, ground transitions), though some carry-over exists from general reaction/athleticism and learning under pressure. | — |
| [209] | Heuristic Bayesian estimate based on shared leverage/contact/grappling-like body control and limited overlap in sport-specific striking/throwing mechanics and rule systems | OpenAI sports-science reasoning model | N/A | N/A | Used to set a modest positive correlation: both pivot play and judo reward off-balancing opponents, body positioning under contact, strength-to-leverage use, and explosive bursts. Correlation reduced because pivot is not a grappling throw sport and does not directly teach judo grips, breakfalls, throw entries, and mat-contact rules. | Open source |
| [210] | Handball wing to judo: limited transfer via timing of explosive actions and coordination under contact | Shared explosive contact/force-timing under pressure | 2026 | Assistant synthesis | Used a modest baseline because both involve making fast, forceful decisions in dynamic situations and coordinating whole-body movement. | — |
| [211] | Wing: speed, angle-based attacks, and coordinated explosive movement sequences | Handball wing skill requirements | 2026 | Assistant synthesis | Identified potentially transferable elements like explosiveness, balance while accelerating, and acting under pressure after quick decisions. | — |
| [212] | Judo: grip/sleeve-gi mechanics, off-balancing, throws/holds, and defensive reactions governed by judo rules | Judo skill requirements | 2026 | Assistant synthesis | Limited overlap because judo success depends on sport-specific grappling technique, leverage, and off-balancing mechanics plus unique defensive/offensive patterns. | — |
| [213] | Intermittent contact/physical contest skills transfer modestly to grappling sports | Combat and contact tolerance transfer (general) | N/A | Sports science synthesis (general) | Defenseman play develops tolerance for physical clashes, balance under pressure, and timing of engagements—useful background for judo groundwork and throws. | Open source |
| [214] | Balance recovery and leverage-minded movement transfer weakly | Balance/leverage under disruption (general) | N/A | Motor control literature (general) | Judo requires maintaining base balance and applying leverage during explosive exchanges; hockey defense also demands body control during checks and pivots, creating some carryover. | Open source |
| [215] | When core actions differ, correlation stays limited | Grappling/throwing mechanics specificity (general) | N/A | Motor learning/technique specificity (general) | Judo success is dominated by sport-specific grips, off-balancing mechanics, throw setups, and mat movement—skills hockey defense does not teach directly. | Open source |
| [216] | Competition rules change how engagement timing works | Different opponent interaction dynamics (general) | N/A | Biomechanics of combat sports (general) | Hockey checks/positioning occur under skates and with stick/puck context, whereas judo engagement is continuous grappling and leverage with different timing constraints. | Open source |
| [217] | Small positive baseline across sports via general coordination, balance under contact, and competitive learning | General transfer priors (coordination + contact tolerance) | N/A | Sports science synthesis | Provides a small prior because hockey forwards build body control at speed and have experience with physical contest, but judo technique is very different. | Open source |
| [218] | Ice hockey forward demands (balance, explosive leg power, stick/edge control under pressure) | Ice hockey forward demands | N/A | Training/sport knowledge base | Slightly increases correlation through transferable qualities: staying coordinated while accelerating/braking and handling physical pressure in traffic. | Open source |
| [219] | Judo demands (off-balancing, leverage, grip fighting, throwing mechanics) | Judo demands | N/A | Training/sport knowledge base | Limits correlation because success depends heavily on sport-specific grappling grips, off-balancing timing, and throw mechanics that hockey forwards do not train directly. | Open source |
| [220] | Transfer of learning from ice hockey goalkeeper to judo success | General transfer reasoning (balance, reactive defense, short explosive efforts), Combat-skill mismatch discount (grappling/throws mechanics, grips, timing) | N/A | Sports science reasoning (no single empirical dataset specified) | Estimated small positive carry-over from goalie skills that generalize to judo’s reactive positioning and body-balance control, while discounting the judo-specific technical learning required (grip fighting, throw entry/rotation mechanics, breakfalls, kuzushi timing, and grappling sequences). | Open source |
| [221] | Shared grappling-adjacent pressure and contact readiness | Internal sports-science synthesis | 2026 | Model reasoning | Gives a small positive correlation because lacrosse attacker play involves frequent physical contests, maintaining balance under contact, and reacting in close range—useful psychological and some movement foundations for judo. | — |
| [222] | Combat technique mismatch (stick contact vs throws/grips) | Internal sports-science synthesis | 2026 | Model reasoning | Reduces correlation because judo success is dominated by highly specific grip fighting, off-balancing mechanics, throw/transition execution, and mat-specific positioning—none of which are trained by lacrosse attacker fundamentals. | — |
| [223] | Rules/environment mismatch (standing stick battles vs grappling on mat) | Internal sports-science synthesis | 2026 | Model reasoning | Further reduces correlation because lacrosse contact occurs with an implement and in field spacing, while judo is continuous grappling with different leverage constraints and scoring/penalty structures, adding noise. | — |
| [224] | Cross-sport transfer intuition (lax defender contact/positioning → judo leverage/throws) | Authors n/a | 2026 | Sports science reasoning | Set a modest positive correlation because lacrosse defense can build toughness, balance under contact, and positional/spatial awareness in physical contests. Reduced further because judo success depends on highly specific grappling technique (grip fighting, off-balancing mechanics, hip/shoulder throw timing, breakfalls) that lacrosse defending does not train in the same way. | — |
| [225] | Shared reactive/positioning skills under high speed and pressure | General sport-transfer reasoning (no single paper) | 2026 | Sports science knowledge synthesis | Lacrosse goalkeeping rewards rapid perception and quick decisions during chaotic high-speed shots, which can support defensive reactions and timing in judo. | Open source |
| [226] | Some transfer from contact tolerance and balance in messy situations | General sport-transfer reasoning (no single paper) | 2026 | Sports science knowledge synthesis | Goalkeepers operate amid physical contact and must maintain stability while being pressured; this can loosely relate to judo’s balance, posture control, and explosive reactions. | Open source |
| [227] | Major technique mismatch: stick/shot saves vs grappling off-balancing mechanics | General sport-transfer reasoning (no single paper) | 2026 | Sports science knowledge synthesis | Judo performance is dominated by grips, throws, throws’ timing, leverage setups, and grappling transitions—skills not directly trained by lacrosse goalie save/positioning mechanics, limiting correlation. | Open source |
| [228] | Environmental mismatch increases variance | General sport-transfer reasoning (no single paper) | 2026 | Sports science knowledge synthesis | Judo requires rule-based grappling movement patterns and repeated technical practice; lacrosse goalie movement doesn’t map cleanly, so individual spread is large. | Open source |
| [229] | Perceptual-cognitive and pressure tolerance transfer from invasion sports to grappling | Composure and decision-making under physical pressure | N/A | Sports science synthesis (no single study) | Supports a modest positive correlation because lacrosse midfielders must make decisions while contacting opponents and operating in chaotic, high-intensity situations—similar mental demands to judo contests. | Open source |
| [230] | General explosive athleticism transfer to grappling exchanges | Explosive leverage/force generation in exchanges | N/A | Sports science synthesis (no single study) | Adds correlation because lacrosse midfield success involves repeated accelerations/decelerations and generating force in short bursts, which can help with judo’s explosive off-balancing and transitions. | Open source |
| [231] | Judo technique is highly sport-specific (takedowns, grips, throws) | Technique specificity: throwing/grappling mechanics | N/A | General performance knowledge | Reduces correlation because judo performance depends heavily on highly specific grip fighting, kuzushi (off-balancing) mechanics, throw entries/rotations, and mat movement that lacrosse does not train directly. | Open source |
| [232] | Different movement constraints and rule structure | Movement/constraint mismatch | N/A | General performance knowledge | Further reduces predictive power: lacrosse midfield contact is stick-and-ball plus running, while judo is grappling with clinch/ground transitions, different balance demands, and different interaction rules. | Open source |
| [233] | Padel-to-judo transfer estimate (technique/learning overlap only) | Internal skill-transfer calibration (no external study supplied) | 2026 | Internal reasoning | Set a small positive correlation. Shared: explosive bursts, timing, and reading an opponent’s movement in fast exchanges; competitive adaptability under pressure. Reduced because judo success depends primarily on grappling-specific technique: throws/entries, leverage application, breakfalls, grip fighting, kuzushi (off-balancing) mechanics, and repeated practice of safe contact patterns—all of which padel’s racket/contact-rebound system does not train directly. | Open source |
| [234] | Shared timing and rapid read-react under pressure | Authors n/a | 2026 | Internal reasoning prior | Pickleball rewards quickly reading an opponent’s next move and reacting with the right timing. Judo also depends on recognizing grips/attacks early and responding fast, creating a modest positive correlation. | — |
| [235] | Footwork and balance recovery transfer is limited but present | Authors n/a | 2026 | Internal reasoning prior | Both involve maintaining balance while moving quickly and recovering after sudden changes. This can help early judo movement quality, but not the core grappling mechanics. | — |
| [236] | Grappling/off-balancing technique mismatch dominates | Authors n/a | 2026 | Internal reasoning prior | Judo success is driven by sport-specific throws, leverage/kinematic patterns, grip fighting, and breaking posture. Pickleball’s paddle striking does not train these technical grappling skills, limiting correlation. | — |
| [237] | Energy/contact/impact context differs (treated as noise for skill-only correlation) | Authors n/a | 2026 | Internal reasoning prior | Judo outcomes are strongly influenced by contact/impact tolerance, clinch dynamics, and risk management—factors that add variance and reduce predictive power of pickleball performance. | — |
| [238] | Opponent interaction is different: spatial net play vs full-body engagement | Authors n/a | 2026 | Internal reasoning prior | Pickleball opponent interaction is mostly about ball trajectory and distance. Judo is full-body leverage and off-balancing in close contact, so tactical overlap is small. | — |
| [239] | Transfer reasoning (row rowing lightweight → judo): leverage/whole-body coordination and repeated power vs limited overlap in gripping/specific throw mechanics | Internal synthesis: lightweight rowing → judo | 2026 | Internal synthesis | Used overlap in whole-body coordination, efficient force transfer/leverage concepts, posture control, and technical repetition under fatigue. Down-weighted because judo success is dominated by sport-specific gripping, balance disruption, takedown/throw mechanics (timing of grips, hip/shoulder positioning, kuzushi), and grappling-specific reactive exchanges not trained by rowing. | — |
| [240] | Both sports reward whole-body force generation and leverage | Non-specified (shared leverage/force principles) | n/a | Sports science consensus | Supports a modest positive correlation because rowing openweight success depends on coordinated whole-body power and leverage, which conceptually matches judo’s use of off-balancing and force application through the kinetic chain. | Open source |
| [241] | Judo off-balancing and gripping are highly specific | Non-specified (technique specificity: grappling mechanics) | n/a | Sports science consensus | Caps the correlation because rowing doesn’t train judo-specific grip fighting, breakfalls (ukemi), grappling positioning, or the exact rotation/throw mechanics and timing. | Open source |
| [242] | Repeated high-effort training tolerance transfers better than exact technique | Non-specified (conditioning + recovery) | n/a | Sports science consensus | Adds a bit because judo training includes repeated hard exchanges and sparring; rowers often adapt well to demanding training workloads and maintain movement quality under fatigue. | Open source |
| [243] | Contact/impact balance and body control overlap | Authors n/a | n/a | Sports science transfer synthesis (no single canonical citation) | Rugby halfback/midfield success includes maintaining balance under collision, using leverage with body position, and adapting in chaotic contact situations—general ingredients that can help judo’s off-balancing and throwing setup. | — |
| [244] | Grappling technique mismatch (pins/throws vs passing/kicking) | Authors n/a | n/a | Coaching-position-demand synthesis (no single canonical citation) | Judo is dominated by grip fighting, off-balancing (kuzushi), and highly technical throw mechanics and groundwork. Rugby passing/kicking and collision running don’t train these core grappling techniques directly. | — |
| [245] | Different “exchange” rules and tactical constraints | Authors n/a | n/a | Motor learning/constraint mismatch synthesis | Judo exchanges are structured around grips, grips breaking, and legal throw/hold constraints. Rugby is continuous with different timing, so tactical decision habits transfer only partially. | — |
| [246] | Conversion variance from non-combat-sport backgrounds | Authors n/a | n/a | Bayesian conversion variance prior (no single canonical citation) | Switching from rugby to judo produces a wide spread in learning: some athletes adapt quickly to grip/throw mechanics and falling safety; others struggle, widening the standard deviation. | — |
| [247] | No strong negative transfer when technique-only effects are considered | Authors n/a | n/a | Model constraint (technique-only framing) | Rugby is not expected to systematically worsen judo mechanics; at worst it provides limited upside rather than true negative skill transfer. | — |
| [248] | Rugby loose forward → Judo overlap assessment | N/A (model-based estimation) | 2026 | Internal sports science reasoning (no single external source used) | Estimated carry-over by crediting shared transferable elements: contact tolerance, leverage/body positioning awareness, explosive power in short bursts, grappling-adjacent comfort with collisions, and mental resilience under physical pressure. Discounted judo-specific determinants: throw mechanics (hip/shoulder/leg reap entries), grips and hand-fighting rules, kuzushi-to-tsukuri timing, mat positioning, falling/ukemi technique, submission knowledge, and judo bout-specific strategy and scoring sequences. | Open source |
| [249] | Contact and off-balancing exposure | — | N/A | Sports science synthesis | Outside backs work in collision-heavy, physical contexts and must stay effective when challenged, which supports early comfort with off-balancing and physical exchanges in judo. | Open source |
| [250] | Leverage and body-control skills | — | N/A | Sports science synthesis | Rugby requires using body position and leverage in tackles/contests and maintaining balance during force application; this can transfer to judo’s leverage-based throws and grips. | Open source |
| [251] | Explosive exchanges and changing intent | — | N/A | Sports science synthesis | Broken-play running and evasion involve sudden bursts and rapid commitment, which can modestly help with judo’s explosive engagement phases. | Open source |
| [252] | Major technique mismatch: grips/throws/throws-to-ground mechanics | — | N/A | Sports science synthesis | Judo success is dominated by judo-specific grips, foot positioning for kuzushi/entry, hip/shoulder throw mechanics, and safe breakfalls; rugby outside-back play doesn’t train these directly. | Open source |
| [253] | Different rules/engagement constraints | — | N/A | Sports science synthesis | Rugby contact focuses on tackling/holding and ball contest within specific constraints; judo is continuous clinch/grappling with throw and mat-work constraints, limiting transfer of engagement skills. | Open source |
| [254] | Skill-transfer plausibility framework (close-contact force/leverage + repeated collision resilience → judo off-balancing/leverage throws) | N/A (synthesis) | 2026 | Internal reasoning | Estimated carry-over from rugby union tight-five success (scrum/contact force, leverage concepts, stability, repeated collision stress tolerance) to judo success (off-balancing, leverage-driven throws, grip-fighting exchanges, explosive bursts) excluding body-proportion advantages like size. | Open source |
| [255] | Force absorption + dynamic balance transfer to grappling exchanges | Reasoned synthesis (no single dataset assumed) | 2026 | Sports science reasoning | Downhill/super-G builds strong ability to absorb large forces, stay balanced under perturbation, and re-center quickly—traits that can help initial learning of judo stances, grips-into-body positioning, and recovery after being unbalanced. | Open source |
| [256] | Throwing/judo mechanics mismatch (no shared joint-lift sequence) | Reasoned synthesis (no single dataset assumed) | 2026 | Skill transfer reasoning | Judo success depends heavily on sport-specific leverage, hip entry timing, foot placement, and technique-specific throw mechanics and breakfalls; alpine skiing’s edge/slide control does not directly teach these constraints. | Open source |
| [257] | Opponent-driven grip fighting vs fixed-course control | Reasoned synthesis (no single dataset assumed) | 2026 | Cognitive/temporal skill reasoning | Judo is dominated by discrete, opponent-driven grip and movement battles with rapid decision loops; downhill is mostly continuous control on a fixed course, reducing technique/timing correlation. | Open source |
| [258] | Neuromotor transfer from dynamic balance and force absorption (ski turns) to stance control in grappling | Balance/stability and force-absorption transfer | N/A | General sports science principles | Used to justify a small positive correlation because alpine skiing (technical events) trains dynamic balance, stance control, and the ability to absorb/redirection forces—useful for judo posture and maintaining base during off-balancing attempts. | Open source |
| [259] | Judo performance depends heavily on sport-specific throws/grip and leverage timing | Judo-specific leverage and off-balancing mechanics specificity | N/A | Judo coaching/biomechanics knowledge | Capped correlation because judo success is dominated by grip fighting, throw entries/angles, leverage timing, and grappling-specific timing not trained by skiing. | Open source |
| [260] | Opponent-driven perception-action loop differs from terrain-driven self-paced control | Adversarial interaction constraint mismatch | N/A | Motor learning/perception principles | Reduced overestimation since judo is a continuous adversarial loop with contact, grips, and opponent-dependent off-balancing—different from skiing’s edge/terrain control. | Open source |
| [261] | Transfer estimate (ski cross-country endurance/coordination → judo judo-explosive off-balancing) | Modeled general grappling/coordination transfer assessment (ski XC → judo throws) | 2026 | Sports science reasoning (modeled estimate) | Assigned a small-to-modest positive correlation because skiing XC can indicate good balance, coordinated whole-body movement, and endurance for repeated explosive efforts. But judo success is heavily dependent on sport-specific leverage/throw mechanics, grips, off-balancing timing, and explosive hip/footwork exchanges that skiing doesn’t train directly. | Open source |
| [262] | Balance under perturbation and safe recovery | Dynamic balance and falling safety transfer (no single dataset) | 2026 | Internal heuristic | Snowboarding builds dynamic balance, proprioception, and body control after slips/landings, which can help judo players maintain position and recover during grips, pulls, and off-balancing actions. | Open source |
| [263] | Leverage timing partial overlap | Leverage/off-balancing mechanics overlap limited (no single dataset) | 2026 | Internal heuristic | Judo uses off-balancing and leverage; snowboarding also uses edge/stance leverage to steer and stabilize, giving a modest carryover for feeling leverage-based movement and timing. | Open source |
| [264] | Throwing/grappling technique mismatch | Grappling and contact-specific technique mismatch (no single dataset) | 2026 | Internal heuristic | Judo success depends heavily on grip fighting, kuzushi entry timing, throw mechanics, and ground transitions—skills snowboarding does not train directly. | Open source |
| [265] | Explosive action coordination | Explosive exchanges general coordination (no single dataset) | 2026 | Internal heuristic | Snowboarding includes rapid bursts (turn initiation, edge engagement, aerial takeoff) that can modestly support the coordination needed for explosive judo exchanges. | Open source |
| [266] | Some carry-over exists from contact sports to grappling via toughness, balance under resistance, and tactical timing | Combat-sport transfer from contact/collision sports (general) | 2010-2020 | Applied sport science/combat-sport coaching literature (general) | Central defenders face frequent physical contests; that can modestly help judo’s readiness, grip/space awareness, and learning under intensity. | Open source |
| [267] | Judo success depends strongly on sport-specific skill mechanics (grip fighting, throws, breakfalls, positional leverage) | Grappling performance determinants (general) | 2010-2020 | Biomechanics and coaching literature (general) | Soccer defending doesn’t teach judo-specific throw entries/execution, breakfalls, and grappling grips—limiting correlation. | Open source |
| [268] | Balance and whole-body coordination under perturbation can transfer across physically challenging sports | Motor control/balance under perturbation (general) | 2010-2020 | Motor learning/balance literature (general) | Defenders have repeated aerial duels and contact moments, which can help judo balance and ability to recover during off-balance exchanges. | Open source |
| [269] | When the core movement and technique architecture differs, cross-sport correlations remain low-to-moderate | Technique architecture mismatch (general) | 2010-2020 | Sports transfer-of-training research (general) | Soccer’s tackle/aerial-body positioning is different from judo’s leverage/throw sequences and mat-specific safety mechanics, capping carry-over. | Open source |
| [270] | Techniques/timing overlap estimate: soccer central midfielder → judo | General sports-transfer reasoning (skill/learning overlap framework) | 2026 | Internal synthesis | Used to estimate carry-over via transferable elements: balance, body control while moving, competitive dueling experience, decision-making under pressure, and basic understanding of leverage/positioning from midfield contests. Discounted sport-specific determinants: judo’s specific grips/hand fighting, throw mechanics (hip/shoulder/leg attacks), timing of kuzushi/entries, mat work, and rule-based scoring/positions that soccer does not train. Excludes body-structure traits per instructions. | Open source |
| [271] | Cross-sport skill transfer priors: technique/mental overlap between soccer goalkeeper and judo | General sport-transfer reasoning (skills/mentality overlap) | 2026 | Internal reasoning | Used to set a low-but-nonzero correlation because both sports can benefit from reaction time, body control, and training mindset, but the core technical skills differ substantially. | — |
| [272] | Shared explosiveness/pressure tolerance with limited grappling-technical overlap | Internal Bayesian transfer estimate (soccer striker → judo) | 2026 | Model reasoning | Estimated low positive correlation based on (1) general athletic explosiveness, (2) reacting decisively under pressure, and (3) learning to compete intensely. Reduced because judo success depends heavily on judo-specific leverage/grip fighting, off-balancing mechanics, body-positioning, breakfalls, and rule/timing patterns that are not trained by soccer striker finishing/attacking. | — |
| [273] | General motor skill transfer and athleticism | — | 2026 | General sports science reasoning | Used to justify a small positive carry-over because soccer wingers have coordination, balance under movement, and ability to explode and recover. | Open source |
| [274] | Specificity and skill differences in combat sports | — | 2026 | General sports science reasoning | Used to cap correlation because judo success depends heavily on judo-specific grip fighting, throws, leverage timing, and grappling positional skills not trained by winger play. | Open source |
| [275] | Open-skill ball invasion vs controlled clinch/grappling exchange | — | 2026 | General sports science reasoning | Used to reduce carry-over because judo exchanges are structured by grappling rules and leverage/center-of-mass control rather than ball-related movement and opponent reading. | Open source |
| [276] | Estimated carry-over from softball catcher to judo | Heuristic sports-transfer model (general balance, coordination, reactive body control; technique mismatch) | 2026 | Internal synthesis | Estimated low positive correlation due to shared general skills (coordination, balance in a low stance, reactive control under pressure, learning discipline). Strongly discounted because judo success is dominated by judo-specific off-balancing/timing, gripping and leverage mechanics, throw/transition technique, and grappling conditioning that catcher receiving/blocking does not train. | — |
| [277] | Baseline prior for softball field-player → judo (technique-only) | Unknown (modeled estimate) | 2026 | Internal sports-science prior | Start low-positive because softball fielding shares general athletic coordination and reaction skills, but judo is dominated by grappling mechanics and leverage/throws. | — |
| [278] | Positive contributors: timing, grip/arm coordination, and changing body positions quickly | Unknown (modeled estimate) | 2026 | Internal sports-science prior | Field players develop quick perception of a moving object and coordinated whole-body movement, which can help with learning judo timing, balance disruption, and explosive transitions. | — |
| [279] | Mismatch factor: throw/set-up mechanics, leverage rules, and ground-work skills | Unknown (modeled estimate) | 2026 | Internal sports-science prior | Judo success depends heavily on judo-specific grips, off-balancing (kuzushi), footwork/angles, throw mechanics (hip/shoulder/leg techniques), adherence to rules, and grappling/ground transition skills not trained by softball fielding. | — |
| [280] | Softball Pitcher → Judo skill-carryover correlation estimate | Internal domain reasoning | 2026 | Sports science assistant synthesis | Estimated from overlap in upper-body force transfer, explosive readiness, and learning repeatable technique under fatigue/pressure, tempered by major differences between underhand striking/throwing mechanics and judo’s grips, balance-off, leverage, grip fighting, and ground-to-standing transitions. | — |
| [281] | Cross-sport transfer heuristic (squash → judo) | Internal domain reasoning | N/A | N/A | Estimated carry-over from squash success to judo success via overlap in reaction timing, ability to act explosively in short bursts, dynamic balance, and coping with continuous high-pressure exchanges; reduced because judo success depends on judo-specific grappling skills (grip fighting, off-balancing mechanics, throws/sweeps, breakfalling, mat positioning, and rule-specific strategy) not trained in squash. | Open source |
| [282] | Surfing → Judo skill/transfer model | Internal synthesis: surfing to judo transfer estimate | 2026 | Internal synthesis | Estimated low-to-modest positive carryover from surfing’s dynamic balance, ability to recover after perturbations, and learning explosive timing; subtract because judo success depends on sport-specific grappling mechanics, grips, off-balancing techniques, throw entries, and mat-specific conditioning not trained by surfing. | Open source |
| [283] | Some transferable athletic skills (coordination, shoulder/upper-body endurance, effort control) | Authors n/a | 2026 | Internal model | Gave a modest baseline because middle-distance backstroke builds whole-body coordination, disciplined technique practice, and shoulder/upper-body endurance—helpful for learning judo grips/throws and maintaining work rate. | — |
| [284] | Large mechanics mismatch (swimming propulsion/turns vs judo off-balancing and throw mechanics) | Authors n/a | 2026 | Internal model | Reduced correlation: backstroke mechanics and underwater turns don’t teach the key judo determinants—explosive hip/leg drive for throws, leverage timing, grip-fighting, balance disruption/off-balancing, and dynamic grappling positioning. | — |
| [285] | Different stimulus and decision demands (self-paced rhythm vs adversarial reaction) | Authors n/a | 2026 | Internal model | Adjusted downward slightly because judo success relies heavily on reactive decision-making to a resisting opponent, while swimming is self-paced against the clock. | — |
| [286] | Shared explosive, leverage-friendly movement qualities | Authors n/a | 2026 | Internal reasoning | Sprint backstroke success depends on short-burst explosiveness (start/turn) and coordinated whole-body tension; judo also requires explosive bursts and effective leverage/off-balancing. | — |
| [287] | Major technique specificity mismatch (aquatic propulsion vs grappling exchanges) | Authors n/a | 2026 | Internal reasoning | Backstroke sprint mechanics (aquatic propulsion, underwater/turn rhythm, shoulder-driven technique) don’t train judo’s clinch/grappling skills, off-balance timing, grip fighting, or throw-specific body positioning. | — |
| [288] | Contact/interaction perceptual demands differ (clocked race vs opponent reads) | Authors n/a | 2026 | Internal reasoning | Judo relies heavily on reading an opponent’s posture/movements and executing timing-sensitive grips/throws; swimming is mostly against the clock, limiting perceptual-motor transfer. | — |
| [289] | Bayesian calibration to low-to-modest transfer between very different sports | Authors n/a | 2026 | Internal reasoning | Kept correlation in a modest range because there’s some general athletic transfer (explosiveness, coordination), but core sport techniques and interactive demands differ strongly. | — |
| [290] | Transfer of learning (general principles) | General transfer of motor control + technique discipline | 2026 | Internal synthesis | Sets a small baseline: swimmers who master a complex, timing-heavy stroke demonstrate coordination, body control, and disciplined technique practice that can help in learning grappling fundamentals. | Open source |
| [291] | Motor learning and specificity | Motor learning specificity (movement-pattern mismatch) | 2026 | Internal synthesis | Down-weights because breaststroke propulsion timing and water-based rhythm do not train judo’s core mechanics: grips, hip/shoulder leverage, off-balancing, throwing entry/rotation timing, and grappling footwork. | Open source |
| [292] | Sports conditioning differences (general) | Explosive exchange/power profile mismatch | 2026 | Internal synthesis | Reduces predictive value because judo success depends heavily on short explosive exchanges, strength-endurance in scrambles, and impact/leverage tolerance rather than breaststroke middle-distance efficiency. | Open source |
| [293] | Perceptual-cognitive demands in sport (general) | Tactical/decision demands differ | 2026 | Internal synthesis | Only modest positive overlap: both require timing and adapting under fatigue, but judo is adversarial with continuous opponent-based decision making and rapidly changing contact dynamics. | Open source |
| [294] | Correlations become moderate when both sports reward explosive power, coordination, and technical learning under fatigue; they stay limited when core interaction skills differ | General sports science on cross-sport transfer | n/a | Sports science generalization | Used to justify a modest positive correlation between swim sprint breaststroke and judo because both involve explosive, well-timed force production and high technical coaching. | Open source |
| [295] | Sprint breaststroke is timing-heavy and depends on coordinated whole-body force production (arm-leg simultaneity; starts/turns/walls) | Swimming breaststroke sprint determinants (general) | n/a | Swimming biomechanics/coaching generalizations | Supports increasing correlation: indicates strong neuromuscular coordination and ability to generate force quickly in short bursts. | Open source |
| [296] | Judo performance relies heavily on grips, balance disruption, throws/entries, and explosive burst exchanges with opponent-specific timing | Judo determinants (general) | n/a | Judo coaching/biomechanics generalizations | Caps the correlation: judo’s key skills (grip fighting, off-balancing, throw mechanics, falling safely) have limited biomechanical overlap with breaststroke propulsion. | Open source |
| [297] | Transfer is usually modest when task mechanics differ, but general coordination and training habits carry over | Motor learning/transfer-of-learning reviews (general) | various | Motor learning & sport science literature | Supports a non-zero correlation from transferable factors (coordination, body control, staying technical under effort) even when butterfly mechanics differ from judo throws/grappling. | Open source |
| [298] | Judo success depends heavily on sport-specific gripping, off-balancing, and explosive entry timing | Combat sports skill determinant themes (general) | various | Combat sports science / biomechanics literature | Justifies capping the correlation: butterfly does not directly train judo grip fighting, leverage-based off-balancing, or throw entry timing. | Open source |
| [299] | Maintaining performance quality across repeated hard efforts generalizes to some degree | Fatigue tolerance & repeated-exchange themes (e.g., Docherty et al.; McGowan & Pyne-type) | various | Sports physiology & motor control literature | Butterfly middle-distance requires maintaining coordination as fatigue builds; judo matches also demand repeated explosive exchanges and controlled technique under fatigue/stress. | Open source |
| [300] | Whole-body coordination and postural control are useful across contact sports | Postural control/leverage and whole-body coordination (general) | various | Kinesiology / motor control literature | Supports some carryover because both judo and butterfly require coordinated trunk/upper-body action and stable technique. | Open source |
| [301] | Model reasoning: butterfly sprint success (explosive upper-body power, whole-body coordination, ability to keep mechanics under intense fatigue) to judo success (explosive leverage/kinetic-chain usage, gripping/positioning coordination, repeated high-intensity exchanges) | N/A (estimation) | 2026 | Model reasoning | Estimated technique/skill-only transfer from shared general qualities (explosive force production, coordination, technique staying reliable under fatigue) to judo’s demands (off-balancing mechanics, leverage/kinetic-chain timing, intense exchange tolerance), while discounting major mismatches (grappling-specific grips/throws mechanics and ground/contact positioning). | — |
| [302] | Why endurance swimming can slightly help in grappling rounds | General conditioning and fatigue tolerance transfer | N/A | Sports science heuristics (domain knowledge) | Distance freestyle success indicates strong aerobic/anaerobic tolerance and the ability to keep coordination under fatigue, which helps with repeated hard training/sparring demands in judo. | Open source |
| [303] | Coordination and body-control transfer across combat sports | Motor learning/coordination carry-over (limited) | N/A | Sports science heuristics (domain knowledge) | Swimming can build whole-body coordination and disciplined technical practice, which can slightly accelerate learning of grips, balance breaking, and movement patterns in judo. | Open source |
| [304] | Why freestyle technique doesn’t map to judo throws and grips | Specificity penalty: aquatic propulsion vs throws/grappling mechanics | N/A | Sports science heuristics (domain knowledge) | Excluding body-trait effects, judo success is dominated by grip fighting, off-balancing mechanics, leverage/hip throws, timing in grips, and grappling-specific reactions—skills not trained by front-crawl propulsion. | Open source |
| [305] | General athletic transfer: coordination, timing, and training consistency | Authors n/a | 2026 | Internal reasoning | Gave a modest baseline positive correlation because strong middle-distance swimmers tend to have good coordination, body control, and disciplined technical practice—useful for learning judo. | — |
| [306] | Low direct technical overlap: swim propulsion vs judo grips/off-balancing mechanics | Authors n/a | 2026 | Internal reasoning | Capped the correlation because judo success depends on highly specific grip fighting, off-balancing (kuzushi), throws/controls, and grappling movement patterns not trained by front-crawl freestyle. | — |
| [307] | Some overlap in explosive repeated effort and staying composed through fatigue | Authors n/a | 2026 | Internal reasoning | Added a smaller amount because judo involves repeated explosive exchanges and maintaining performance across bouts; swimming indicates some ability to keep technique under fatigue. | — |
| [308] | Determinants of judo performance: explosive exchanges, leverage, and grappling skill | Kravitz / combat sports conditioning or representative judo performance reviews | 2000-2023 | Combat sports performance literature (representative) | Used to anchor that judo success depends on explosive bursts and repeated high-intensity exchanges, which overlap in general intensity qualities with sprint freestyle. | — |
| [309] | Rate of force development (RFD) and explosive performance across tasks | Cormie / RFD literature (representative) | 1990-2020 | Strength & Conditioning / biomechanics | Supports a moderate-for-small carry-over via explosive neuromuscular qualities like quick force production. | — |
| [310] | Transfer limits: combat-specific techniques are highly constrained | Sheppard, et al. | 2005-2019 | Biomechanics & conditioning research | Keeps the estimate from becoming too high: judo throws depend on specific grip/hip mechanics, off-balancing, and timing not trained by swimming. | — |
| [311] | Perceptual-cognitive skill and transfer in interactive sports | Abernethy, et al. | 1990-2010 | Sport vision & perception literature | Justifies a small additional correlation via general anticipation/decision-making under pressure. | — |
| [312] | Cross-sport transfer variability in talent development and motor learning | Baker, et al. | 2010-2020 | Sports talent development / motor learning research | Represents realistic uncertainty: some athletes adapt quickly to judo; others require a long learning period. | — |
| [313] | Reactive timing and off-balancing responsiveness | N/A (modeled estimate) | 2026 | Internal sports-science heuristic | Both sports reward reading an opponent’s next action and responding instantly with coordinated movement, which can help judo entries and defensive reactions. | Open source |
| [314] | Fine motor control and grip/force application precision | N/A (modeled estimate) | 2026 | Internal sports-science heuristic | Table tennis demands precise force application and body positioning on small movements, transferring somewhat to judo’s grip fighting and controlling limb angles. | Open source |
| [315] | Technique mismatch: racket/spin vs throws/grappling mechanics | N/A (modeled estimate) | 2026 | Internal sports-science heuristic | Core skill acquisition differs: table tennis is racket-ball contact/spin and footwork bursts; judo is leverage-based off-balancing, grips, hip/shoulder mechanics, and throw setups—limited direct mapping. | Open source |
| [316] | Continuous grappling exposure and conditioning specificity | N/A (modeled estimate) | 2026 | Internal sports-science heuristic | Judo performance depends strongly on grappling endurance, repeated clinch/hand-fighting, and injury-prone movement patterns that table tennis does not train. | Open source |
| [317] | Combat striking to grappling baseline prior | Bayesian prior: striking combat → grappling combat transfer | 2026 | Internal reasoning | Start with a moderate positive baseline: both are combat sports with sparring, distance/timing, and explosive exchange skills that can carry over. | Open source |
| [318] | Timing and distance control overlap | Taekwondo distance management and timing (generalized), Judo off-balance entry timing and throw timing (generalized) | 2026 | Internal reasoning | Both reward initiating attacks at the right moment and managing engagement distance before committing. | Open source |
| [319] | Explosive exchange overlap | Taekwondo explosiveness and transition from defense to attack (generalized), Judo explosive bursts during grips, entries, and reversals (generalized) | 2026 | Internal reasoning | Taekwondo’s repeated high-intensity bouts can translate to judo’s bursty throw attempts and rapid changes of body position. | Open source |
| [320] | Balance/control overlap (partial) | Taekwondo stance/balance control (generalized), Judo balance breaking and leverage sensitivity (generalized) | 2026 | Internal reasoning | Judo requires very good balance and body control; taekwondo trains balance, though in a different context. | Open source |
| [321] | Technique mismatch (striking vs grappling) | Major technique mismatch: judo’s grips, throws, and grappling mechanics vs taekwondo kicking/striking (generalized), Judo requires specific grip fighting, kuzushi mechanics, mat-based body control (generalized) | 2026 | Internal reasoning | The largest limitation: judo success depends heavily on grip strength/placement, off-balancing mechanics, and throwing/ground transitions not taught in taekwondo. | Open source |
| [322] | Training habit transfer | Learning/coachability from sparring sports (generalized), Adaptation to grappling rule-sets and technical progression (generalized) | 2026 | Internal reasoning | Keep correlation moderately high because elite taekwondo practitioners tend to adapt quickly to new tactical and technical demands under coach supervision. | Open source |
| [323] | Motor coordination and balance from interactive sports transfer modestly | General athletic coordination transfer | N/A | General sports transfer / motor learning (high level) | Supports a small positive correlation because tennis improves footwork, balance, timing, and the ability to move efficiently under dynamic conditions. | Open source |
| [324] | Technique specificity limits transfer across combat sports vs striking sports | Combat-specific grappling/throw mechanics specificity | N/A | Motor learning specificity principles (high level) | Limits correlation: judo success depends on specific gripping, off-balancing (kuzushi), throws (tachi-waza/ne-waza), leverage angles, and grappling timing—largely not trained by tennis. | Open source |
| [325] | Different interaction constraints reduce predictable carry-over | Interaction mode differences (open-skill vs clinch-grappling) | N/A | Sports biomechanics/skills transfer (high level) | Keeps estimate low because tennis is mostly open-space, ball-based timing, while judo is close-contact, force-vector control, and continuous physical resistance. | Open source |
| [326] | Skill/transfer model (triathlon endurance/pacing + general coordination vs judo explosive gripping/throw timing) | N/A (model-based synthesis) | 2026 | Internal reasoning | Triathlon transfers mainly conditioning, recovery, and general movement discipline. Judo’s determinants are highly specific: gripping/hand-fighting, off-balancing timing, leverage/throw mechanics, burst coordination, and grappling tactics. Indirect overlap keeps correlation low but above zero, with moderate variance due to athletes who do strength/power work or other combat training. | Open source |
| [327] | Transfer mapping: volleyball attacker → judo | Internal expert-judgment mapping: volleyball attacker → judo (technique-only) | 2026 | Internal synthesis | Gave small credit for general technique-neutral transferable elements: explosiveness for quick entries, balance/body control after jumps, and comfort training under high intensity. Penalized for missing judo-specific motor programs: grips/hand-fighting mechanics, throwing mechanics (hip/shoulder/leg techniques), leverage application, off-balancing timing, grappling posture transitions, and repeated uchikomi/randori patterns that are fundamentally different from spiking/contact-free net attacking. | Open source |
| [328] | Priors: intermittent jumping/striking ↔ judo grappling | Bayesian prior for low-modest transfer between net power skills and combat grappling | 2026 | Internal Bayesian prior | Set a low baseline (~0.03–0.10) due to limited technique overlap, centered at ~0.08 to reflect only general coordination/explosiveness transfer potential. | Open source |
| [329] | Volleyball libero to judo (throwing/grappling) carry-over estimate | (model-based cross-sport skill mapping) | 2026 | internal model | Used to estimate a small positive correlation from transferable athletic/coordination skills (balance, quick foot placement, defensive reaction to contact), while down-weighting because judo success is dominated by sport-specific gripping, leverage/turning mechanics, falling/ukemi, and precise throw-entry timing not trained in libero digging/reception. | — |
| [330] | Volleyball middle blocker → judo general transfer | Internal combat/reactive timing heuristic (engagement timing + balance control) | 2026 | Internal model assumptions | Estimated modest carry-over via transferable skills: reading an opponent/ball quickly, explosive whole-body engagement timing, and maintaining balance during sudden forceful actions. Reduced because judo requires specific grip, throws, and leverage mechanics not trained in volleyball. | Open source |
| [331] | Judo mechanics mismatch adjustment | Bayesian task-specific mismatch scaling (net blocking/jumping vs grappling throws) | 2026 | Internal model assumptions | Down-weighted since judo success depends heavily on judo-specific grips, kuzushi (off-balancing), hip/shoulder throw mechanics, mat movement, and sustained grappling tactics—skills volleyball does not teach directly. | Open source |
| [332] | General reactive coordination and explosive movement transfer to grappling (overview) | N/A | N/A | Sports science / coaching consensus (no single study specified) | Used to justify a small positive correlation because setters have practice with fast timing, body coordination, and reacting to incoming trajectories. | Open source |
| [333] | Combat-sport technical mismatch: throw/hold mechanics vs volleyball overhead placement (overview) | N/A | N/A | Sports science / coaching consensus (no single study specified) | Capped transfer because judo success depends on highly specific grip-fighting, off-balancing setups, breakfalls/ukemi, throw timing, and positional control—skills not trained by setting. | Open source |
| [334] | Learning environment dominance in combat sports (overview) | N/A | N/A | Sports science / coaching consensus (no single study specified) | Keeps uncertainty high and the mean low because judo performance is shaped heavily by sparring repetitions and judo-specific technical learning curves. | Open source |
| [335] | Skill-transfer across similar combat sports (general knowledge) | Sports skill transfer/general principles (shared grappling fundamentals) | N/A | General sports science knowledge | Used to set a high prior because wrestling and judo are both grappling sports with substantial shared fundamentals (balance breaking, leverage, throws, positional control). | Open source |
| [336] | Wrestling-to-judo transferable components | Wrestling coaching knowledge (takedowns, clinch, leverage) | N/A | Coaching & applied sports science knowledge | Identifies why good wrestlers carry over: clinch/hand-fighting, off-balancing mechanics, controlling positions, and explosive exchange timing. | Open source |
| [337] | Judo performance contributors (grips, throw mechanics, entry/turnover) | Judo coaching knowledge (throws, grips, rules) | N/A | Coaching & applied sports science knowledge | Identifies limiting factors: judo’s gi grips, throw-specific entry/combination timing, scoring system, and penalties/rule emphasis differ from wrestling, producing variance and keeping correlation < 1. | Open source |