跳远助跑最后一步摆动腿小腿支撑扇角的研究

On the Legs' Supporting Angle of Sector in the Last Step of Broad-Jump Run-Up

助跑最后一步摆动腿着地时 ,其小腿支撑扇角对踏板前的身体重心下降、水平速度以及离板瞬间的重心垂直速度有重要影响。

The legs' supporting angle of sector in the last step of run-up before the take-off has much effect on the drop of body center, horizontal speed and vertical speed in broad jump.