一、问题的提出我省优秀女子短跑运动员杜家英,在入队一年后的1977年就以200米25秒(手)的成绩,打破了省少年纪录、成年纪录和全国少年纪录,曾被调到国家集训队,并参加了中日田径对抗赛,取得了较好的成绩。然而,自1978年至1982年前后五年期间,她的成绩一直不能提高,反而下降,究竟原因何在?这引起了我们的深思。带着这一问题,我们从1982年下半年开始,对此进行了专门的研究。研究采取调查访问的方法与跟踪训练相结合,找出运动水 First, the problem raised outstanding provincial sprint athlete Du Jiaying, one year after the enlistment in 1977 to 200 meters 25 seconds (hand) results, breaking the provincial record of juvenile, adult record and national juvenile records, was transferred To the national team training, and participated in the track and field competition in Japan, and achieved good results. However, from 1978 to 1982, she failed to improve her performance but declined in the following five years. What is the reason behind this? This has given us deep thought. With this issue in mind, we started a special study in the second half of 1982. Research to take the method of investigation and tracking combined with tracking training to find out the water of exercise