摘 要：采用运动生物力学测试、解析等方法，对我国优秀女子链球运动员王峥多年的竞赛成绩和技术变化进行分析，研究发现：随着成绩提高，王峥在技术上每圈双支撑阶段时间和器械轨迹呈逐渐增加的趋势，所占比例也逐渐增加，而单支撑阶段时间和器械轨迹呈逐渐缩短的趋势，技术更趋于合理。器械出手瞬间角度逐渐减小、器械水平速度逐渐增加、垂直速度逐渐减小，最后用力参数模式更加合理。现阶段存在的主要问题是：3、4圈左膝关节蹬伸幅度较大，肩带肌肉群舒展幅度不够，还有提高的空间。此外，3、4圈也存在器械斜面角偏大，器械高点位置偏高的现象。

关 键 词：竞赛与训练；链球技术；女子链球运动员；王峥

中图分类号：G808；G824.4 文献标志码：A 文章编号：1006-7116（2016）05-0129-07

Abstract： By using such methods as sports biomechanical test and analysis， the author analyzed the performance and technical changes of WANG Zheng as an excellent Chinese female hammer thrower over the years， and revealed the following findings： with her performance improved， technically， at each turn， the time used and the instrument track produced by WANG Zheng at the double support stage showed a gradual increase， and the proportion increased gradually， while the time used and instrument track produced at the single support stage showed a gradually shortening trend， her technique tended to be rational； at the moment she released the instrument， the angle decreased gradually， the instruments horizontal velocity increased gradually， its vertical velocity decreased gradually， her final power explosion parameter mode was more rational； at the current stage， she had the following main problems： at turns 3 and 4， her knee joint stretching amplitude was too great， and her shoulder muscles stretching amplitude was insufficient， which need to be improved， moreover， the instruments bevel angle was on the big side， and the instruments peak position was on the high side.

Key words： competition and training；hammer throwing technique；female hammer thrower；WANG Zheng

女子链球在我国属于田径中的优势项目，曾涌现出顾原、刘颖慧、张文秀、王峥等一批优秀运动员。其中王峥和张文秀是现役运动员，在刚刚结束的北京世锦赛上张文秀获得了银牌，王峥获得第5名。王峥是近几年在该项目上成绩提高幅度较大的运动员，但没有实现重大突破。通过对王峥68.00～77.68 m之间成绩的技术变化进行研究，旨在为取得更大突破提供理论支撑和依据。

1 研究方法

1）运动生物力学测试。

采用2台卡西欧EX-FH25高速摄像机，1台摄像机置于投掷圈右侧，1台位于投掷圈后侧，2台摄像机主光轴夹角约90?左右，拍摄距离约10 m，机高1.20 m左右，拍摄频率为120帧/s。在比赛前对三维框架进行一次拍摄标定，比赛后再进行一次框架的标定，保证所拍比赛视频全部有效。……