背越式跳高“双动力”起跳技术理论与实践研究  

Study on"Double Dynamical"take-off Technique Theory Innovative Research of Fosbury Flop High Jump

作　　者：苏斌[1] 吕乙林[1] 

机构地区：[1]广州体育学院运动系,广东广州510076

出　　处：《广州体育学院学报》2005年第5期42-45,共4页Journal of Guangzhou Sport University

摘　　要：运用运动生物力学研究法,训练实验法,分析了背越式跳高弧线助跑起跳过程中身体重心和垂直速度的变化规律,认为背越式跳高起跳身体重心由低向高不断加速上升,垂直速度是由小到大不断加速增大是从助跑最后一步摆动腿垂直支撑开始到起跳腿蹬离地面结束的“两步”中完成的,起跳垂直速度是摆动腿支撑和起跳腿支撑下的“双动力”起跳中获得。弧线助跑起跳最大的优越性是经济实效地降低和升高身体重心,为身体重心运动方向提早转变和垂直速度提早积累创造有利条件。背越式跳高“双动力”起跳训练的中心是围绕以速度为核心的“一个中心;两个基本点;三个结合;四个平衡;五个途径;六个转化”进行起跳训练。Though the biologic mechanical, the paper analysis on the variational rule about the center of body gravity of body and the upright speed in take- off technique. The result concludes that the position of the center of body gravity of body is the lowest and the the upright speed is the slowest in the last step at ran up when the swing leg upright to the jump leg take off the ground of top- level fesbury flop high jump athletes. The author shows that the center of body gravity is the ascending phase and the upright speed is the increase course.The take- off phase of Fosbury flop high jump is from the last step at ran up when the swing leg upright to the jump leg take off the ground, the jump is ＂double dynamical＂ that two legs both play the function, the most advantage of Fosbury flop high jump is economically depress and hoist gravity of body at ran up along the arc phase, and creative the advantage for the change the direction movement of body gravity and cumulating of upright velocity.

关 键 词：背越式跳高 双动力 起跳 

分 类 号：G823.3[文化科学—体育训练]