Effect of the Different Hip Joint Angle Definition on the Estimation of Muscle-Tendon Complex Length of the Hip Extensor Muscles in Counter Movement Jump
Effect of the Different Hip Joint Angle Definition on the Estimation of Muscle-Tendon Complex Length of the Hip Extensor Muscles in Counter Movement Jump
复制标题
不同髋关节角度定义对反跳跳跃中伸髋肌肌腱复合体长度估计的影响
DOI：
10.5432/ijshs.ijshs20085002
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Akihiro Kato
中科院分区：
文献类型：
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作者：
Kiyonobu Kigoshi;K. Byun;M. Ogata;Akihiro Kato
本研究的目的是考虑基于躯干和基于骨盆的髋关节角度之间的差异，以及在动态运动中基于这两种髋关节角度估计的MTC长度之间的差异。10名男运动员表演了CMJ。比较躯干髋角和骨盆髋角的关节运动学和股二头肌长头的MTC长度。在CMJ中，躯干髋关节的角位移显著高于骨盆髋关节。除初始位置外，两种髋关节角度之间均无显著相关性。对于股二头肌长头肌，与躯干髋关节角导出的MTC长度相比，骨盆髋关节角导出的MTC长度变化不大，呈下降阶段伸展，上升阶段缩短。这些结果表明基于躯干和基于骨盆的髋关节角度具有相似的波动模式；然而，每种类型的角度位移并不相等。这些结果还表明，我们可能误解了肌肉收缩的类型，因为即使对于相同的肌肉类型，髋关节角度的定义也是不同的。
The purpose of this study was to consider the discrepancy between the trunk-based and the pelvis-based hip joint angles, and the difference between the MTC lengths estimated on the basis of the two types of hip joint angles during dynamic movement. Ten male athletes performed CMJ. Joint kinematics and the MTC length of long head of biceps femoris were compared between the trunk-based hip angle and the pelvis-based hip angle. In the CMJ, the angular displacements of the trunk-based were significantly higher than that of pelvis-based hip joints. There were no significant correlations between the two types of hip joint angles except at initial position. As for long head of biceps femoris, in contrast with the trunk-based-hip joint angle derived MTC length, which shows stretching in the descending phase and shortening in the ascending phase, the pelvis-based hip joint angle derived MTC length shows little changes. These results suggest that the trunk-based and pelvis-based hip joint angles have similar patterns of fluctuation; however, the angular displacement of each type is not equivalent. These results also suggest that we may misinterpret the type of muscle contraction because the definitions of hip joint angle are different even for the same muscle type.