de Sousa Fortes Leonardo, de Vasconcelos Gustavo César, de Vasconcelos Costa Bruna Daniella, Paes Pedro Pinheiro, Franchini Emerson
Graduate Program in Physical Education of Federal University of Pernambuco, Recife, Brazil.
Physical Education and Sport School of University of São Paulo, São Paulo, Brazil.
J Exerc Rehabil. 2017 Dec 27;13(6):659-665. doi: 10.12965/jer.1735134.567. eCollection 2017 Dec.
The objective of the present study was to analyze the effect of 10% body mass reduction on simulated taekwondo match performance. Thirty-one male taekwondo athletes were randomly distributed in two groups: weight loss group (n= 15) - athletes in this group reduced 5% body mass per week during two successive weeks, totaling 10% body mass reduction; control group (n= 16) - athletes in this group kept their body mass constant during the 2-week period. Twenty-four hours before and after this period, athletes performed a simulated 3-round taekwondo match (6 min). Athletes wore body protectors to validate the scores during the match according to the official taekwondo rules. Match was filmed and actions were categorized using the Game Performance Assessment Instrument. There was a group and time interaction (< 0.001) for body mass, with decrease only for the weight loss group (= 0.001). A group and time interaction was also observed for the taekwondo match performance (< 0.001), with performance increase being found only for the control group (= 0.01). Thus, the 10% weight loss was not a good strategy to improve taekwondo skills' performance.
本研究的目的是分析体重减轻10%对模拟跆拳道比赛表现的影响。31名男性跆拳道运动员被随机分为两组：减重组（n = 15）——该组运动员在连续两周内每周减重5%，总计减重10%；对照组（n = 16）——该组运动员在两周内保持体重不变。在此期间前后24小时，运动员进行了一场模拟的3轮跆拳道比赛（6分钟）。运动员佩戴护具，根据官方跆拳道规则在比赛中验证得分。比赛进行了拍摄，并使用比赛表现评估工具对动作进行分类。体重存在组间和时间交互作用（<0.001），仅减重组体重下降（=0.001）。跆拳道比赛表现也观察到组间和时间交互作用（<0.001），仅对照组表现提高（=0.01）。因此，减重10%不是提高跆拳道技能表现的好策略。
