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通过B模式超声波测量的人体肌肉的机械应变波传播
Tania Blasio Gleeson1, James Wakeling2
1Neuromuscular Mechanics Laboratory, Department of Biomedical Physiology and Kinesiology, Simon Fraser University, 8888 University Dr W, Burnaby, BC, V5A 1S6, Canada. tblasio.92@gmail.com.
European journal of applied physiology
|December 19, 2025
概括
肌肉质量显著影响人类骨肌肉在收缩过程中如何变形. 这项研究表明,将肌肉质量纳入模型可以改善肌肉力量的预测,挑战以前的假设.
科学领域:
- 生物力学 生物力学
- 人体生理学 人体生理学
- 骨肌肉动力学 骨肌肉动力学
背景情况:
- 肌肉质量是骨肌肉的一个关键物理属性.
- 当前的肌肉收缩模型往往忽略了肌肉内质量的作用.
- 了解肌肉变形动态对于准确的力预测至关重要.
研究的目的:
- 为了研究肌肉质量在人类双肩手臂和手腕手臂组织变形的动态中的作用.
- 为了确定肌肉质量是否会影响肌肉收缩期间的应变波传播.
- 评估调力振动反射对观察到的现象的贡献.
主要方法:
- 21名受试者握着一个振动的子 (10赫兹),以诱导双臂和手腕的振荡.
- B模式超声波用于跟踪应变波传播和测量波速.
- 一项补充性研究测量了肌电活动,以评估强力振动反射.
主要成果:
- 由于组织惯性,观察到应变波传播,波速随肌肉紧张而增加.
- 肌电活动分析表明,在10 Hz时,最小的调力振动反射,排除它是波传播的原因.
- 肌肉质量被证明对肌肉收缩的内部动态有显著影响.
结论:
- 肌肉质量在人类骨肌肉收缩的内部动态中发挥着重要作用.
- 现有的肌肉收缩模型可能需要重新评估,以纳入肌肉质量,以准确预测力.
- 这项研究强调了在肌肉功能的生物力学模型中考虑组织惯性和质量的重要性.
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