网球运动中上肢环节链鞭打动作的运动学研究

Kinematics Research for Joint Chains of Upper Limb Whiplash Movement in Tennis

本研究通过对不同运动水平的网球运动参与者的发球动作进行对比分析,为丰富鞭打动作的生物力学规律提供理论依据。本文本文采用PTI三维运动捕捉系统,对不同运动水平的网球运动参与者的发球动作进行运动学数据采集,分析网球发球动作中的动作原理。结果表明:正确的发球动作身体各环节速度由近端环节向远端环节逐渐增大,最终将动量传递至球拍,使球拍获得最大速度。挥拍击球阶段躯干与上臂夹角并不是180°,说明击球时躯干转向击球的对侧以达到重心的平衡,击球高度主要通过前臂伸直达到。

This study based on different sports level of tennis players serve action were analyzed,for the rich whipped action rule of biomechanic. This paper adopts PTI three-dimensional motion capture system,collecting serving data acquisition of different movements level tennis players. Research results show that the correctly service action,speed gradually from the proximal joint to the distal joint,then the momentum transfer to the racket,the racket to obtain maximum speed. Hitting the swing phase,angle between torso and upper arm is not 180 °,illustrate the trunk turned to the opposite side so as to balanced of gravity center,the forearm stretch to shot.