对跳远起跳过程中摆动腿作用的研究

Study on the Function of Leg Swinging in the Taking off Process of the Long Jump

采用文献资料法,数理统计法,比较分析法,从缓冲和蹬伸阶段对跳远起跳过程中摆动腿作用进行研究。结果表明摆动腿的正确摆动过程和有效用力方法对达到理想化腾起初速度和腾起角起着关键作用,在缓冲阶段,摆动腿的摆动对重心的垂直速度起着主导作用,摆动腿摆腿速度越快,可为后继的蹬伸动作创造更好的条件。起跳蹬伸阶段摆动腿的摆动制动加速度直接影响起跳离地瞬间起跳的蹬伸运动效果,与腾起初速度和跳远成绩有着密切的联系。

Literary grace this spend documents and materials law, mathematics and physics statistic law, comparative analytic approach, jump over Cheng swing leg function go on research from the moment that buffer and pedal and stretch stage the long - jump. Result indicate swing correct course of leg and exert oneself method is it rise speed originally and rise corner play a key role to idealize reaching effectively, during the course of buffering, the swing which swings the leg plays a leading role to the vertical speed of the weight, swing leg speed quick to wave leg can create good condition for succeeding pedalling and stretching movements. In this stretch stage, the swinging of legs applies the brake acceleration is it pedal and stretching the sport result from what place take - off in the twinkling of an eye to take - off to influence directly to pedal to take - off, originally speed and long - jump achievement have close connections with rising.