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| 张峻旋转推铅球过渡阶段主要关节角度变化特征分析 |
| Analysis of the Variation Characteristics of the Main Joint Angles in the Transition Phase of Zhang Jun's Spinning Shot Put |
| Received:January 15, 2012 |
| DOI： |
| 中文关键词:张峻 旋转推铅球技术 三维图像解析 |
| 英文关键词:Zhang Jun spinning shot put skill 3D image analysis |
| 基金项目: |
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| 中文摘要: |
| 运用三维图像解析方法，对张峻的旋转推铅球技术中过渡阶段的身体各主要关节角度变化进行运动学分析，目的在于通过了解在不同的时空中张峻各主要环节的角度变化，对其技术进行有效地诊断。张峻推铅球技术的过渡阶段中，投掷成绩在19 m以上时的肩髋夹角都在50°以上，且肩髋夹角与投掷成绩呈显著正相关；随着铅球成绩的提高，左肩角逐渐减小，右肩角变化不大，左髋角度逐渐加大，右髋角的变化不太明显，左膝角度有所增大，而右膝角的变化不明显。 |
| 英文摘要: |
| By the method of 3D image analysis, the article makes a kinematical analysis of the angle changes of Zhang Jun's main joints in the transition phase of spinning shot put. The aim of the study is to know the angle variation of Zhang Jun's main joints in different space-time in order to diagnose his skill effectively. In the transition phase of Zhang Jun's shot put, the shoulder hip angles are all over 500 when the result of his performance is more than 19m. Significant positive correlation can be seen between the shoulder hip angle and the result of performance. As his performance improves, the left shoulder angle decreases and the right shoulder angle remains nearly the same. The left hip angle increases gradually and there is no significant changes of the right hip angle. The left knee angle increases to some extent and no distinct changes have been detected in right knee angle. |
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