李玲撑竿跳高助跑起跳技术的运动学分析

The Kinematics Analysis of the Take-off and Run-up Technology of Liling's Pole Vault

选取李玲在2008年全国田径大奖赛萧山站女子撑竿跳高决赛4.45m夺冠时的比赛录像,运用德国SIMI Mo-tion影像解析系统进行分析,并与国内外优秀撑竿跳高运动员技术进行比较研究。研究结果表明:①李玲的最后两步助跑,倒2步步长偏短,且其倒1步比倒2步步长长,出现了"拉大步"现象。②李玲起跳时上手握点地面投影点和起跳点的间距较大,与现代撑竿跳高的技术要求略有偏差。③起跳的腾起角度、竿弦与地面的夹角较小,已达到世界级优秀运动员水平。④起跳时间偏长,插穴时间过早,与"自由起跳"技术尚有差距。⑤起跳步水平速度损失、垂直速度增加都较小,是比较合理的起跳技术,但最后两步助跑的水平速度不够。

In this paper,a Simi motion image analysis is made on liling＇s pole-vaulting technique in the National Track and Field Championship held at 2008 in Xiaoshan,and do comparative study with the outstanding pole vaulting athletes at home and abroad.The results show that：（1） The length of Li Ling＇s last Step 2 is partial short,and the length of last step 1 is shorter than last step 2,it also appears ＂pull big step＂ phenomenon.（2） It have a greater distance between ground projection points of the grip point and Take-off point,and have a slight deviation with modern pole vaulting technical requirements.（3） The take-off angle and the angle between the Pole and ground are small,it reached world-class level of outstanding athletes.（4）The take-off time is long and the plant-take-off time is premature,and still have a gap with ＂free take-off＂ technology.（5）The loss of the level speed and the increase of the vertical speed of the take-off step is small,the take-off technology is reasonable,but the final two-step level speed is not sufficient.