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The Cognitive Function and Taekwondo-Specific Kick Performance of Taekwondo Athletes at Different Hydration Statuses

Zheng, Ai-Chi, He, Cheng-Shiun, Lu, Chi-Cheng, Hung, Bao-Lien, Chou, Kuei-Ming, Fang, Shih-Hua·2024·International Journal of Sports Physiology and Performance
DOI 10.1123/ijspp.2023-0332
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Abstract

Purpose: Successful participation in taekwondo (TKD) requires athletes to possess quick decision-making abilities and demonstrate technical proficiency during competition. Dehydration, occurring during both training and competition, is widely recognized to have various negative effects. Methods: This study investigated the impact of different levels of dehydration on cognitive function, as measured by the Vienna Test System, and the specific performance of kicking techniques among TKD athletes. Using a randomized crossover design, 12 participants were involved in the study. Before and after 1 hour of training at 80% of maximal heart rate, participants were weighed and provided urine samples. All participants were randomly assigned to 3 different hydration conditions: the euhydrated (EUH) group had unrestricted access to fluid consumption, while the hypohydrated (HYP) and severely HYP (S-HYP) groups experienced reductions of 2.0% and 4.0% of their initial body weight, respectively. Results: The EUH group exhibited better reaction speed in reaction-time test-form S1 than the HYP and S-HYP groups. Notably, the EUH group demonstrated a significantly higher success rate in the front-side kick (EUH 98%, HYP 90%, S-HYP 88%; P < .05). However, the success rates of back roundhouse kick and free head kick were similar among the 3 statuses. Furthermore, postexercise heart rates were found to be significantly higher in the HYP and S-HYP groups compared with the EUH group. Conclusions: This study provides insight into the negative effects of dehydration on cognitive function and TKD-specific performance. It is recommended that TKD athletes maintain optimal hydration levels during training and competition to ensure optimal performance.

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Metadata

Authors
Zheng, A.-C., He, C.-S., Lu, C.-C., Hung, B.-L., Chou, K.-M., & Fang, S.-H.
Affiliations
  • Department of Sport Performance, National Taiwan University of Sport, Taichung, Taiwan
  • Department of Athletic Sports, National Chung Cheng University, Minxiong, Taiwan
  • Department of Sports Medicine, China Medical University, Taichung, Taiwan
  • Department of Combat Sports, National Taiwan University of Sport, Taichung, Taiwan
ORCID
Venue
International Journal of Sports Physiology and Performance
Publisher
Human Kinetics
Published
2024-07-01
Volume
19
Issue
7
Pages
637-644
ISSN
  • 1555-0265
  • 1555-0273
DOI
10.1123/ijspp.2023-0332
Cited by
9
References
1

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Zheng, A.-C., He, C.-S., Lu, C.-C., Hung, B.-L., Chou, K.-M., & Fang, S.-H. (2024). The Cognitive Function and Taekwondo-Specific Kick Performance of Taekwondo Athletes at Different Hydration Statuses. International Journal of Sports Physiology and Performance. https://doi.org/10.1123/ijspp.2023-0332

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