1.引言运动员中有一组特殊人群,他们不仅体重正常,而且体脂百分数很低,但是为了运动比赛经常需要减轻或控制体重。如举重、摔跤、柔道以及一些按不同的体重级别进行比赛的运动员,在赛前采取传统的减轻体重的措施,而且年龄和体重最小的运动员所减轻的体重数占其原体重的百分数往往最高。 1. INTRODUCTION Athletes have a special group of people who are not only in normal weight but also have a low body fat percentage but often need to lose weight or control their weight to exercise. Athletes such as weightlifting, wrestling, judo, and some of the different weight classes used traditional weight-loss measures prior to the competition, and athletes who were the youngest and the weakest tended to lose as much weight as their original weight percentages.