区域肌肉特征及其与膝盖伸展器的关联,迫使在单个关节角度生产
Andrea Monte1, Martino V Franchi2,3
1Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy.
European journal of applied physiology
|May 31, 2023
概括
大侧肌 (VL) 和大腿直骨 (RF) 肌肉的中间部分,特别是它们的体积,显著预测膝盖伸展器最大自愿力 (MVF). 这些区域的肌肉结构是产生力量的关键.
科学领域:
- 生物力学 生物力学
- 人体生理学 人体生理学
- 肌肉骨的解剖学 肌肉骨的解剖学
背景情况:
- 了解肌肉结构和力量产生之间的关系对于优化运动表现和康复至关重要.
- 膝盖延伸器,包括横向巨 (VL),中间巨 (VI) 和大腿直肠 (RF),是腿部延伸力的主要贡献者.
- 这些肌肉内部的区域变化可能会影响整体的力输出,但这还没有得到广泛的研究.
研究的目的:
- 研究膝盖延伸器 (VL,VI,RF) 区域肌肉特征在确定最大自愿力 (MVF) 中的作用.
- 为了确定哪个特定的区域肌肉结构参数最好地预测MVF.
主要方法:
- 15名健康的男性接受了超声波和MRI,以测量肌肉结构,体积 (Vol),解剖截面面积 (ACSA) 和生理截面面积 (PCSA) 在VL,VI和RF的近位,中位和远位部分.
- 在90度的膝关节关节角度测量了同度膝关节延伸器力.
- 进行了相关性和逐步的多重线性回归分析,以评估区域参数和MVP之间的关系.
主要成果:
- 区域肌肉几何学 (笔纹角,长) 与MVP没有显著的相关性.
- 每个膝盖伸展肌肉的中间部分与近距离和远距离区域相比,与MVF有更强的相关性.
- 在VL和RF的中间部分的肌肉体积 (Vol) 成为MVP最强的预测因素,解释了76%的差异 (调整后R2=0.71).
结论:
- 巨额横和直骨中部区域的肌肉体积是膝盖延伸器在90度关节角度最大自愿力的重要决定因素.
- 虽然在预测MVP方面没有发现Vol,PCSA和ACSA之间的显著差异,但特定区域的区域肌肉体积被强调为关键因素.
- 这些发现强调了考虑区域肌肉特征的重要性,特别是中间肌肉部分的体积,以了解和预测膝盖延伸器的强度.
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