膝关节角度在同位素次最大自发膝关节延伸过程中对巨大的中枢和巨大的侧面性的影响
Jérémie Bouvier1, Augustin C Ogier2, Cyril Martin1
1Universite Claude Bernard Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM), F-69622 Villeurbanne, France.
概括
膝关节的角度和收缩强度会影响广侧面肌肉 (VL) 的特性,但不会影响广中部肌肉 (VM). VL VL VL VL VL VL VL VL VL VL VL VL
科学领域:
- 生物力学 生物力学
- 肌肉生理学 肌肉生理学
- 医疗成像医学成像
背景情况:
- 剪切波弹性学非侵入性地评估肌肉负载的共享.
- 关节角度和收缩强度影响肌肉贡献.
研究的目的:
- 调查膝关节角度对大中枢 (VM) 和大侧面 (VL) 机械性能的影响.
- 评估在同位素次最大自发收缩期间的肌肉贡献.
主要方法:
- 使用剪切波弹性图绘制.
- 测量VM和VLYoung的模量在静止状态和25%,50%,75%MVC期间.
- 在12名参与者身上测试了两种膝盖角度 (50°和100°).
主要成果:
- 在各种条件下,VM Young的模量没有显著差异.
- 根据膝盖的角度和收缩强度,VL Young的模量有显著的变化.
- 在25%的MVC和100°的膝盖角度下,VL显示出更高的模量.
结论:
- 大中间体的贡献是独立于膝盖角度和扭矩水平.
- 横向肌肉的贡献取决于肌肉的长度和相对扭矩.
- 肌肉的机械特性是视角和强度依赖于VL.
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