The effects of rapid weight loss and 3-h recovery on energy expenditure, carbohydrate, and fat oxidation in boxing athletes.
The effects of rapid weight loss and 3-h recovery on energy expenditure, carbohydrate, and fat oxidation in boxing athletes.
复制标题
快速减肥和 3 小时恢复对拳击运动员能量消耗、碳水化合物和脂肪氧化的影响。
DOI：
10.23736/s0022-4707.18.08677-2
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Hiroaki Tanaka
中科院分区：
文献类型：
--
作者：
Hiroyuki Sagayama;E. Yoshimura;Yosuke Yamada;Hiroaki Tanaka
背景
拳击手需要考虑快速减肥（RWL）期间的能量代谢，然后快速恢复体重。我们研究了RWL和3小时急性体重恢复对拳击运动员能量消耗、碳水化合物氧化和脂肪氧化的影响。
方法
这项分析是基于7名健康的年轻男性运动员的数据，他们经历了快速减肥，然后迅速恢复体重。在三个时间点评估能量消耗：急性体重减轻前一周（基线）; 1周体重减轻期后; 3小时急性体重恢复期后。这个三成分模型用于估计身体成分。睡眠代谢率和饮食诱导的产热（DIT）在间接测热室超过17小时的时间内进行了测量。禁食过夜后，提供规定的膳食，并在3小时内测量DIT。随后是三步跑步机跑步方案。
结果
体重减轻导致脂肪量、去脂肪量和体重显著降低，体重在3 h内恢复（1.7 ± 0.3 kg）。恢复期餐后碳水化合物氧化显著低于基线，而脂肪氧化较高，但DIT无变化。
结论
RWL，随后是短期的急性体重恢复，产生脂肪氧化的增加和碳水化合物氧化的减少，其中脂肪氧化的增加通过过夜睡眠期以及餐后和运动期维持。
BACKGROUND
Boxers need to consider energy metabolism during rapid weight loss (RWL) followed by rapid weight regain. We examined the effects of RWL and a 3-h acute weight recovery on energy expenditure, carbohydrate oxidation, and fat oxidation in boxing athletes.
METHODS
The analysis was based on the data of seven healthy young male athletes who underwent rapid weight loss followed by acute weight recovery. Energy expenditure was evaluated at three time points: one week prior to the acute weight loss (baseline); after the 1-week weight loss period; after a 3-h acute weight recovery period. This three-component model was used to estimate body composition. Sleeping metabolic rate and diet-induced thermogenesis (DIT) were measured in an indirect calorimetry room over a 17-h period. After an overnight fast, a prescribed meal was provided and the DIT was measured over a 3-h period. This was followed by a three-step treadmill running protocol.
RESULTS
Weight loss produced a significant decrease in fat mass, fat free mass, and body mass, with recovery of body mass within 3 h (1.7±0.3 kg). Postprandial carbohydrate oxidation was significantly lower during the recovery period than at baseline, while fat oxidation was higher, although there was no change in the DIT.
CONCLUSIONS
RWL, followed by a short-term of acute weight recovery, produces an increase in fat oxidation and a decrease in carbohydrate oxidation, with the increase in fat oxidation being maintained through an overnight sleep period, as well as in the postprandial and exercise periods.