%0 Journal Article
%T 我国女子链球项目备战2016年里约奥运会重点队员投掷技术的研究<br>Throwing Techniques of Chinese Key Female Hammer Throwers Preparing for the 2016 Rio de Janeiro Olympic Games
%A 董海军
%J 北京体育大学学报
%D 2017
%R 10.19582/j.cnki.11-3785/g8.2017.11.017
%X 摘要：女子链球是我国田径的优势项目，为了进一步探索项目的内在规律和对运动员技术完善提供帮助，推动该项目在我国的可持续发展。通过运动生物力学拍摄和三维解析的方法，对我国两名最优秀女子链球选手的投掷技术进行研究，发现：我国两名选手普遍存在对器械持续加速能力偏弱现象，特别是第4圈和最后用力阶段，整个旋转中第四圈技术有待进一步完善（都存在球体力量向身体方向转移的拉球、左肩回撤现象）。同时存在器械斜面角偏大以及右腿上腿不积极现象，右脚有延迟着地和速度慢的现象。其中王峥旋转技术中第三圈存在的问题比较大，双支撑阶段左膝关节伸展幅度过大，肩带多余肌肉参与用力，上肢的放松和舒展程度较差，造成器械运行轨迹缩短，以上是王峥技术改进和完善的方向。张文秀的技术主要问题是进旋转速度慢、第四圈向身体方向拉球等问题，造成第四圈双支撑阶段加速距离的缩短，以上问题是张文秀技术完善的方向。通过对比研究发现我国运动员的优势和存在问题，为技术运动员改进和提高运动成绩提供帮助和参考。<br>Abstract: The women's hammer is China's track and field advantage project; in order to further explore its inherent law and provide help for improving athletes’ technique and promote this project’s development in China, this study analyzed the throwing techniques of two Chinese elite female hammer throwers by the shooting and 3D analysis of sports biomechanics. Results: The two throwers’ sustained acceleration capability on instrument was weak, especially in the fourth and final stage; the technique in the fourth turn needed to be improve (both athletes had ball pulling which lead ball close to the body and left shoulder retracement). The angle of the instrument was too large and the right leg was not positive, was delayed and slow. Wang Zheng’s rotation technique had relatively big problem in the third turn, her left knee extension was too large in the double support phase, her excessive muscles were recruited, and her relaxation and stretching were poor which cause equipment running track shortened. These were the improvement direction of Wang Zheng. The main problems of Zhang Wenxiu's technique were that the speed of rotation was slow and the ball was pulled to the body in the fourth turn, resulting in the shortening of the acceleration distance of the fourth turn in double support stage. These were the improvement direction of Zhang Wenxiu. This study comparatively analyzed the advantages and problems of Chinese athletes to provide references for athletes to improve their technique and sports performance
%K women’s hammer preparing for Olympic Games throwing technique kinematics research
%U http://xuebao.bsu.edu.cn/ch/reader/view_abstract.aspx?file_no=20171117&flag=1