摘要
通过对我国青奥队5名女子网球运动员的发球动作进行三维录像及解析,研究各自发球动作在时间、空间、速度等方面的运动学特征,分析各自动作优势与缺憾,找出造成失败动作的原因,提出改进建议,为提高其竞技水平提供参考依据。结果:在发球动作过程中蹬伸阶段所占时间的百分比最大,对运动员动作进行分析发现,蹬伸过程双脚离地动作会影响蹬伸效果,间接影响重心升高和击球点高度,较好的背弓和"亮胸"技术有利于充分发挥胸大肌力量,需根据各运动员的特点强化训练。
The research team took a 3 D video recording of ball serves by five female tennis players of China＇s youth Olympic team. We then analyzed the kinematic character- istics of the serves of each player in terms of time, space, and speed, and eompared the advantages and shortcom- ings of the serves. The purpose of this study was to locate the causes for failed serves, and provide valuable infor- mation regarding improving their tennis techniques. We found that the push-off phase accounted for the maximum percentage of time, and that in this process the way that the two feet moved off the ground had an impact on the pushing effects, an indirect effect on the rise of center of gravity and the height of striking. The results also showedthat a good back arch and solid ＂chest-revealing＂ tech- niques can give full play to the strength of the pectoralis major muscle, but they require intensive training accord- ing to the characteristics of each player.
出处
《南京体育学院学报（自然科学版）》
2013年第3期22-25,共4页
Joournal of Nanjing Institute of Physical Education:Natural Science
基金
青蓝工程资助项目(编号:YJ201106)
关键词
网球发球
运动学
tennis serve, kinematics
