任务对肌肉内肌肉区域差异的影响直骨在同度收缩期间的弹性:超声波剪切波弹性研究:超声波剪切波弹性研究
Taiki Kodesho1, Kazuma Yamagata2, Gakuto Nakao3
1Department of Sport Science and Research, Japan Institute of Sports Sciences (JISS), Tokyo, Japan.
概括
在同度收缩过程中调查直骨 (RF) 弹性揭示了特定任务的区域差异. 靠近的RF区域在部曲过程中经历了较大的机械应力,而不是膝盖延伸.
科学领域:
- 生物力学 生物力学
- 肌肉生理学 肌肉生理学
- 运动科学 运动科学 运动科学
背景情况:
- 了解大腿直肠 (RF) 的机械特性对于优化训练和预防伤害至关重要.
- 之前的研究还没有完全阐明不同异位收缩过程中射频弹性的区域差异.
研究的目的:
- 为了研究直骨 (RF) 弹性的肌肉内区域差异.
- 为了检查RF弹性的任务特异性在等比性部曲 (HF) 和膝盖延伸 (KE) 期间.
主要方法:
- 十六名健康的男性在0%,30%和60%的最大自愿同位数收缩 (MVC) 时执行了同位数HF和KE任务.
- 腿直骨 (RF) 弹性使用剪切波弹性学测量,量化近距离和远距离区域的剪切模量.
- 收缩是在特定的关节角度进行的 (50°部曲,90°膝盖曲).
主要成果:
- 观察到一个显著的相互作用效应 (强度 × 区域 × 任务) (P = 0.01).
- 在部曲任务中,近端射频区域的剪切模量比远端区域的剪切模量更大,MVC为60% (P = 0.001).
- 在任何强度的膝盖延伸任务中,没有发现切割模量具有显著区域差异.
结论:
- 收缩期间的肌肉剪切模量表明了活性力产生.
- 机械应力主要应用于部曲任务期间的RF近端区域.
- 这些发现强调了在生物力学分析中考虑区域肌肉特性和任务特异性的重要性.
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