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以我国现役的3名优秀女子铅球运动员为研究对象,运用文献资料法、三维摄像和录像解析法对其在萧山、苏州的田径大奖赛和石家庄全国田径锦标赛中最好成绩动作的技术进行解析,从时间、空间和时空三方面特征对最后用力阶段技术的运动学特征进行分析。发现:1)李梅菊的右脚蹬转的不够积极,左脚的有效制动和积极蹬伸的能力欠缺;李玲的主要用力点不突出,左侧肌群预先拉紧程度不够;李玲的左脚距抵趾板距离较大;巩立娇的上体抬起和发力较早,出手角度偏低,但是出手速度大于其他两名队员。2)现役的三名队员与前优秀铅球运动员相比,出手的高度没有差距,但是出手的速度仍有较大的差距。3)在最后用力的过程中,铅球做功的距离和时间较短。
Taking the 3 elite female shot putters in active service as the research object, this paper analyzes the technique of the best score action in Xiaoshan and Suzhou Athletics Grand Prix and Shijiazhuang National Track and Field Championships by using the methods of documentation, 3D video and video analytic. The kinematic characteristics of the last stage of force technology are analyzed from the three aspects of time, space and time. Found that: 1) Li Meiju’s right foot pedal turn positive enough, the effective braking left foot and active Dengzhan lack of capacity; Li Ling’s main force point is not prominent, the left muscle tension is not enough pre-tension; Li Ling’s Left plinth to plinth greater distance; Gong Li Jiao upper body lift and force earlier, shot angle is low, but the shot speed is greater than the other two players. 2) There are still no differences between the active players and the former elite shot putters, but there is still a big gap between the shots. 3) In the last hard process, the distance and time for shot put to work is shorter.