Effect of Acute Judo Training on Countermovement Jump Performance and Perceived Fatigue among Collegiate Athletes

Chien-Chun Chang, Tzu-Yi Chen, Chia-Luan Wu, Pi-Yen Ho and Chieh-Ying Chiang ()
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Chien-Chun Chang: Graduate Institute of Athletics and Coaching Science, National Taiwan Sport University, Taoyuan 333, Taiwan
Tzu-Yi Chen: Department of Athletic Training and Health, National Taiwan Sport University, Taoyuan 333, Taiwan
Chia-Luan Wu: Department of Sports Training Science-Combats, National Taiwan Sport University, Taoyuan 333, Taiwan
Pi-Yen Ho: Department of Sports Training Science-Combats, National Taiwan Sport University, Taoyuan 333, Taiwan
Chieh-Ying Chiang: Department of Sports Training Science-Combats, National Taiwan Sport University, Taoyuan 333, Taiwan

IJERPH, 2022, vol. 19, issue 24, 1-12

Abstract: This study focused on the effect of acute Judo training on countermovement jump (CMJ) performance and perceived fatigue among a group of highly trained collegiate judo athletes. Twenty male judo athletes participated in this study (age: 20.65 ± 1.22 years, weight: 84.17 ± 28.45 kg). Participants were assessed for CMJperformance changes before, immediately after (0 h), 12 h after, and 24 h after judo training (JT) using unloaded CMJ(CMJ unloaded ) and loaded CMJ(CMJ loaded ). All the jumps were performed on a force plate, and the force–time curves were collected for further analysis. Respondents’ perceptions were evaluated using the modified rating of perceived exertion (mRPE) before, after (0 h), 12 h, and 24 h after JT. CMJparameters were analyzed at four measured points using a one-way repeated analysis of variance. Effect sizes (ES) and percentage changes before versus 24 h after JT were calculated for comparison. Associations between the CMJparameters and mRPE were analyzed using the Pearson product–moment correlation. The ratio of flight time to contact time significantly decreased, whereas the eccentric duration, concentric duration, and total duration significantly increased ( p < 0.05) in both CMJs 24 h after JT. Compared with CMJ unloaded , CMJ loaded had a significantly lower ( p < 0.05) flight time, jump height, peak velocity, and peak power. The mRPE and CMJ loaded peak velocity showed moderate- to high-level negative correlation results both 0 and 24 h after training ( r = −0.543, p < 0.05; r = −0.479, p < 0.05). In this study, we only observed the effect of fatigue on the neuromuscular (NM) system 24 h after JT. CMJ loaded height may help to better determine fatigue state compared with CMJ unloaded . According to the results, the neuromuscular effects of fatigue were not observed until 24 h after a single high-intensity training. Therefore, when arranging high-intensity special training or strength and conditioning training, one should reduce the volume of training appropriately to avoid fatigue accumulation and reduce the risk of sports injuries.

Keywords: neuromuscular fatigue; modified rating of perceived exertion; sport performance (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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