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首页> 外文期刊>British journal of sports medicine >Effect of rapid weight loss on performance in combat sport male athletes: does adaptation to chronic weight cycling play a role?
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Effect of rapid weight loss on performance in combat sport male athletes: does adaptation to chronic weight cycling play a role?

机译：快速减肥对格斗运动男运动员成绩的影响：适应慢性减肥自行车是否起作用？

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Background Studies failing to show a negative effect of rapid weight loss (RWL) on performance have been conducted in athletes who have been cycling weight for years. It has been suggested that chronic weight cycling could lead combat athletes to become resistant to the stresses associated with weight loss. To investigate the effects of RWL up to 5% of body mass on high-intensity intermittent performance in weight cyclers (WC) and non-weight cyclers (non-WC). Methods Eighteen male combat athletes (WC: n=10; non-WC: n=8) reduced up to 5% of their body mass in 5 days. Body composition, high-intensity performance and plasma lactate were assessed preweight loss and postweight loss. Athletes had 4 h to re-feed and rehydrate following the weigh-in. Food intake was recorded during the weight loss and the recovery periods. Results Athletes significantly decreased body mass, lean body mass (most likely due to fluid loss) and fat mass following weight loss. No significant changes in performance were found from preweight loss to postweight loss in both groups. Plasma lactate was significantly elevated after exercise in both groups, but no differences were found between groups and in response to RWL. For all these variables no differences were observed between groups. Athletes from both groups ingested high amounts of energy and carbohydrates during the recovery period after the weigh-in. Conclusions Chronic weight cycling does not protect athletes from the negative impact of RWL on performance. The time to recover after weigh-in and the patterns of food and fluid ingestion during this period is likely to play the major role in restoring performance to baseline levels.
机译：背景研究未能显示出快速减肥（RWL）对运动成绩的负面影响。已经提出，长期的体重循环可能导致格斗运动员对与体重减轻有关的压力产生抵抗力。为了研究体重高达5％的RWL对重量循环器（WC）和非重量循环器（non-WC）的高强度间歇运动的影响。方法18名男性格斗运动员（WC：n = 10;非WC：n = 8）在5天内减少了5％的体重。评估体重减轻前和体重减轻后的身体成分，高强度表现和血浆乳酸。称重后，运动员有4小时需要重新喂食并补充水分。在减肥和恢复期间记录食物摄入量。结果体重减轻后，运动员的体重，瘦体重（最有可能是由于水分流失）和脂肪量显着下降。从体重减轻到体重减轻，两组均无明显的表现变化。两组运动后血浆乳酸水平均显着升高，但两组之间以及对RWL的反应均未发现差异。对于所有这些变量，各组之间均未观察到差异。在称重后的恢复期间，两组运动员均摄入了大量的能量和碳水化合物。结论慢性负重自行车不能保护运动员免受RWL对运动成绩的负面影响。称量后恢复的时间以及在此期间食物和液体的摄入方式可能在将表现恢复到基线水平方面起主要作用。

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