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女孩子约在13岁左右月经初潮。一般月经每28天来潮一次,经期3～5天。体育训练对女少年运动员的月经有所影响,应引起注意.中小学女学生体育训练时间短而且运动量小,没有训练任务和压力,对月经无影响。但当她们进入体校成为运动员后,体育训练时间长而且运动量大,有繁重的训练任务和压力。因而有相当一部分运动员的月经发生了改变。根据我校1974～1987年间发现,女
Girls about menarche about 13 years old. The general menstrual cramps once every 28 days, menstrual 3 to 5 days. Sports training on the impact of menstrual women athletes should pay attention to .Small primary and secondary school girls sports training time is short and a small amount of exercise, there is no training tasks and stress, no effect on menstruation. However, when they enter the school to become athletes, physical training for a long time and exercise large, heavy training tasks and stress. So a considerable part of the menstrual athletes have changed. According to my school from 1974 to 1987 found that women