一、引言 当前,对于运动员和教练员来说跳远助跑是举世无双的挑战。一方面速度必须适宜,从而使运动员达到可能达到的水平速度,并且依然保持适宜的姿势和动能直至踏跳。在确保不犯规的前提下,跳跃者在上板时必须最大限度地发挥准确性,尽可能少地耗损远度。从某种意义上说这两件事是互不相容的,高速导致准确性难度加大,许多运动 I. INTRODUCTION Currently, the long jump for athletes and coaches is a unique challenge. On the one hand, the speed must be appropriate, so that the athlete achieves a possible horizontal speed, and still maintain the appropriate posture and kinetic energy until the hops. In ensuring that no foul premise, the hopper must be on the board to maximize accuracy, as far as possible to wear away the distance. In a sense, these two things are incompatible with each other. The high speed leads to more difficulty in accuracy. Many sports