对我国自由式滑雪空中技巧国家集训队运动员bF型动作横向飘移问题的专门研究

Special Study on the Floating sideways of the Athletes of bF type Freestyle skiing Aerial in Our National Team

运用摄像法和录像解析法对国家集训队运动员bF型动作横向飘移问题进行研究。研究结果表明 :bF型动作横向飘移距离与人体重心偏移距离中度相关 ,横向飘移主要是由于人体重心的偏移所致 ;导致人体受到向右的支撑反作用分力 ,因而产生向右的加速度 ;两臂摆动的不对称和肩轴的扭转对横向飘移影响较小。

Mainly by means of video method and videotape analysis method, this thesis studies the floating sideways of athletes of the national team. The results indicate: the floating sideways of the type bF is not only related to the deviation of the center of body weight but also to the distance between the skis. The floating sideway results from the deviation of the center of body weight; the reason for the floating sideways to the right is the right deviation of the center of body weight; lastly, the unsymmetrical swing of both arms and the turn of the shoulder axis have a little effect on the floating sideways.