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Evaluation of Sex-Specific Movement Patterns in Judo Using Probabilistic Neural Networks

Bianca Miarka, Katarzyna Sterkowicz-Przybycien, and David H. Fukuda

Coordinative movement skills in judo refer to the ability of an individual athlete to perform a suitable action at the correct moment while quickly adapting to the constantly fluctuating competitive environment ( Miarka, Branco, Vecchio, Calmet, & Franchini, 2015 ). Notational analysis is concerned

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Effects of a 10-Week Introductory Judo Course on Postural Control During a Bilateral Reactionary Gripping Task

Tyler W.D. Muddle, David H. Fukuda, Ran Wang, Joshua J. Riffe, David D. Church, Kyle S. Beyer, Jay R. Hoffman, and Jeffrey R. Stout

, Lech, Jaworski, & Ambrozy, 2012 ). Typically, judo bouts occur in the vertical position ( Franchini & Sterkowicz, 2000 ), requiring athletes to adapt their posture quickly in reaction to combat situations. This is particularly important when performing techniques used during practice or competition

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Repeated Simulated Match-Induced Changes in Finger Flexor Force and Blood Acid–Base Balance in World-Class Female Judokas

Joffrey Bardin, Pierre Bourdier, Bastien Bontemps, Allison Diry, Anthony Birat, Anthony J. Blazevich, Frédéric Roualen, Christine Hanon, Claire Thomas, and Sébastien Ratel

The purpose of a judo contest is to make the opponent fall, submit, or become immobilized in order to score points within regulation time (4 min for men and women). 1 If both participants are equal on points at the end of regulation time, combat is pursued without time limit until one athlete

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Hydration Status in Adolescent Judo Athletes Before and After Training in the Heat

Anita M. Rivera-Brown and Roberto A. De Félix-Dávila

Adolescent judo athletes who train in tropical climates may be in a persistent state of dehydration because they frequently restrict fluids during daily training sessions to maintain or reduce their body weight and are not given enough opportunities to drink.

Purpose:

Determine the body hydration status of adolescent judo athletes before, immediately after, and 24 h after (24H) a training session and document sweat Na+ loss and symptoms of dehydration.

Methods:

Body mass and urine color and specific gravity (USG) were measured before, after, and 24 h after a training session in a high-heat-stress environment (29.5 ± 1.0°C; 77.7 ± 6.1% RH) in 24 adolescent athletes. Sweat sodium loss was also determined. A comparison was made between mid-pubertal (MP) and late pubertal (LP) subjects.

Results:

The majority of the subjects started training with a significant level of dehydration. During the training session, MP subjects lost 1.3 ± 0.8% of their pretraining body mass whereas LP subjects lost 1.9 ± 0.5% (P < .05). Sweat sodium concentration was 44.5 ± 23.3 mmol/L. Fluid intake from a water fountain was minimal. Subjects reported symptoms of dehydration during the session, which in some cases persisted throughout the night and the next day. The 24H USG was 1.028 ± 0.004 and 1.027 ± 0.005 g/mL for MP and LP, respectively.

Conclusions:

Adolescent judo athletes arrive to practice with a fluid deficit, do not drink enough during training, and experience symptoms of dehydration, which may compromise the quality of training and general well-being.

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Effects of 9 Months of Martial Arts Training on Cardiac Autonomic Modulation in Healthy Children and Adolescents

Vinícius Y.B. Suetake, Emerson Franchini, Bruna T.C. Saraiva, Anne K.F. da Silva, Aline F.B. Bernardo, Rayane L. Gomes, Luiz Carlos M. Vanderlei, and Diego G.D. Christofaro

mentioned, there is a need for research in the field of martial arts as a method of exercise for health prevention/promotion. Moreover, it is not clear in the literature if grappling (judo) and striking martial arts (Muay Thai) exert the same influence on HRV in children and adolescents. It is noteworthy

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Effects of Contextual Interference on Learning of Falling Techniques

Saša Krstulović, Andrea De Giorgio, Óscar DelCastillo Andrés, Emerson Franchini, and Goran Kuvačić

, & Mitchell, 2018 ; Shi et al., 2018 ). Along with these proposals for intervention, there are proactive works focusing on the fall techniques of different combat sports, such as judo, which teach how to fall to avoid injury or severity ( Nauta et al., 2013 ; Campos-Mesa, DelCastillo-Andrés, Toronjo

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Weight Management Practices of Australian Olympic Combat Sport Athletes

Reid Reale, Gary Slater, and Louise M. Burke

All Olympic combat sports (currently, judo, taekwondo, boxing, and wrestling) separate athletes by body mass (BM) into “weight” divisions to minimize size/strength disparities. To ensure athletes meet weight requirements, official weigh-ins are held before competition. In addition to reducing body

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Injuries in Judo Athletes With Disabilities: Prevalence, Magnitude, and Sport-Related Mechanisms

Rafael Lima Kons, Marina Saldanha da Silva Athayde, Lara Antunes, Jaqueline Santos Silva Lopes, and Daniele Detanico

Judo is a high-intensity intermittent combat sport in which several physical aspects, including physiological, neuromuscular, psychological, and behavioral, are necessary to achieve optimal technical performance and competitive success. 1 , 2 During specific actions related to attacks, defenses

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High-Intensity Interval Exercise Performance in Judo Athletes: Physiological, Perceptual, and Pacing Responses

Rafael L. Kons and Daniele Detanico

Combat sports usually present similar characteristics, such as the intermittent nature of efforts during matches, noncyclic actions, and undetermined time limits (e.g., matches may end in seconds or last a few minutes; Ceylan et al., 2022 ; Franchini et al., 2011 ). In judo, for example

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Perspective of United States Judo Coaches on Concussion: A National Survey

Christina Yannetsos, Mario C. Pacheco, and Danny G. Thomas

Key Points ▸ There is a widespread underreporting of concussion in athletes. ▸ Red-flag symptoms were often mistaken for common concussive symptoms by judo coaches. ▸ Coaches’ concussion education, judo equipment, and legislature are potential areas of improvement. Sport-related concussion has an