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Moussouami S I, Alongo Y R G, Kouassi J P, Mabika Nzoumba C, Bio Nigan I. Dietary Restriction in Elite Karatekas: Effect on Body Composition and Physical Performance. Ann Appl Sport Sci 2023; 11 (S1)
URL: http://aassjournal.com/article-1-1144-en.html
1- Sport, Health, and Evaluation Research Unit (UR/SSE), National Institute for Youth, Physical Education, and Sport (INJEPS), University of Abomey-Calavi (UAC), Porto-Novo, Benin. Laboratory of Physiology of Effort and Biomechanics (LPB), Higher Institute of Physical Education and Sport (ISEPS), Marien Ngouabi University, Brazzaville, Congo , simplicemoussouami@gmail.com
2- Laboratory of Physiology of Effort and Biomechanics (LPB), Higher Institute of Physical Education and Sport (ISEPS), Marien Ngouabi University, Brazzaville, Congo
3- Sport, Health, and Evaluation Research Unit (UR/SSE), National Institute for Youth, Physical Education, and Sport (INJEPS), University of Abomey-Calavi (UAC), Porto-Novo, Benin
Abstract:   (591 Views)
Background. In weight-category sports, athletes regularly undertake weight-loss diets as competitions approach to lose weight quickly.
Objectives. This study aimed to evaluate the effects of dietary restriction on body composition and physical performance in young elite karatekas.
Methods. In a randomized design, 16 young karatekas volunteers (aged 20.14 ± 1.52 years) participated in this study, subdivided into two periods of 7 days each—one period of weight maintenance and one of food restriction. After anthropometric measurements, field tests aimed at assessing speed and acceleration, explosive power (counter-movement and triple standing jump), agility (T-tests), and aerobic endurance (intermittent yo-yo test 2) were performed. A 7-day food diary for each period (without and with food restriction) was used to determine nutritional intake.
Results. A significant decrease in body mass (p <0.05) was observed after the restriction period. A reduction in jumping power (p = 0.03), as well as a decrease in endurance capacity (p < 0.01), was observed. However, the agility test showed non-significant differences.
Conclusion. Based on these results, caloric restriction for rapid weight loss impairs athletes’ physical capacity and sports performance. Preventive measures against this phenomenon are necessary.
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APPLICABLE REMARKS
• This study is considered important information for athletes who practice voluntary rapid weight loss using dietary restriction.
• This study also allows athletes and trainers to consider the dangers of this method of voluntary weight loss.

Type of Study: Original Article | Subject: Exercise, Training and Health
Received: 2022/07/15 | Accepted: 2022/09/10

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