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| 从不同高度下落到不同硬度的地面上下肢关节的力学响应 | |
| 引用本文： | 侯曼,侯佳,王汉玉.从不同高度下落到不同硬度的地面上下肢关节的力学响应[J].广州体育学院学报,2003,23(4):48-50. |
| 作者姓名： | 侯曼 侯佳 王汉玉 |
| 作者单位： | 1. 北京师范大学体育与运动学院,北京,100875 2. 河北师范大学体育学院,河北石家庄,050016 3. 北京联合大学应用文理学院生物化学系,北京,100083 |
| 摘 要： | 本研究了人从30cm和60cm高度下落到两种不同硬度的地面，即木板地面和海绵垫上时下肢关节的力学响应。结果表明从两种高度下落到海绵垫上比落到木板地面时下肢关节的受力、力矩显减小，关节的角度变化显增加，从着地到落地停稳所用的时问显增加。各关节力矩是外力矩与肌肉力矩共同作用的结果，正确的落地技术应该是三个关节的力矩同时减小，掌握正确的落地技术的实质是掌握正确的肌肉被拉伸与收缩的顺序和大小。从30cm和60cm下落着地后，不论是何种地面条件。三个关节的力矩以髋关节力矩为最大，膝和踝关节肌肉是在髋关节控制下起互相协调作用。 |
| 关 键 词： | 落地高度 地面硬度 膝关节 髋关节 踝关节 落地技术 外力矩 肌肉力矩 运动员 下肢关节 力学响应 体育运动 |
| 文章编号： | 1007-323X(2003)04-0048-03 |
| 修稿时间： | 2003年5月8日 |
The Biomechanical Contributions of the Lower Extremity Joints from Different Height to the Different Landing |
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| HOU Man,HOU Jia,WANG Han-yu.The Biomechanical Contributions of the Lower Extremity Joints from Different Height to the Different Landing[J].Journal of Guangzhou Physical Education Institute,2003,23(4):48-50. | |
| Authors: | HOU Man HOU Jia WANG Han-yu |
| Institution: | HOU Man1,HOU Jia2,WANG Han-yu3 |
| Abstract: | This paper was to investigate the biomechanical effect of the lower extremity joints from a vertical fall of 30cm and 60cm to soft mat and stiff floor landing. Result showed the lower extremity joints significant decrease in joints forces, peak joint moments. The joint angles changed and the time from initial contact until action stop was significant increase. Each joint moment was effect of external moment and internal muscle moment together. Accurate loading technique proposed that moments of all segments should be reduced simultaneously. This result suggested that the contraction and passive stretch of muscles must be controlled in order and magnitude. The highest muscle moment were observed at hip joint in both landing conditions after contact landing, the knee and ankle joint muscles assist each other and are assisted by the hip muscles. |
| Keywords: | landing height landing stiffness knee hip ankle angle |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |