协同肌肉比活动肌肉在脚足底 flexion 的参与度更高
Ying Xu1, Jinping Li1, Xiaowen Ju1
1Department of Rehabilitation Medicine, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, No. 286 of Guangji Road, Suzhou, 215000, Jiangsu, China.
Scientific reports
|July 15, 2025
概括
一个新的非线性电肌学指数,度中心度 (DC),有效地测量在脚部曲期间的小腿肌肉激活. 这一指数,以及像平方根平均值 (RMS) 和中位数频率 (MF) 这样的线性指标,在健康的成年人中显示出显著的增加.
科学领域:
- 生物力学 生物力学
- 神经科学是一个神经科学.
- 生物医学工程 生物医学工程
背景情况:
- 表面电肌图 (sEMG) 对于分析肌肉激活至关重要.
- 传统的线性sEMG指数 (RMS,MF) 提供了有价值的数据,但可能无法捕获复杂的肌肉协同作用.
- 探索新的非线性指数对于全面了解神经肌肉控制至关重要.
研究的目的:
- 用一种新的非线性电肌图指数,评估健康成年人在脚部曲期间的小腿肌肉的激活特征.
- 为了比较非线性指数的有效性,中心度 (DC),与传统的线性指数 (RMS,MF).
- 评估DC作为评估单个肌肉控制在多肌肉运动中的新指标的潜力.
主要方法:
- 十名健康的男性参与者在休息状态和脚部曲状态下对小腿肌肉进行了sEMG测量.
- 计算和分析了线性指数 (RMS,MF) 和非线性指数 (DC).
- 统计分析比较了休息状态和活跃状态之间的指数值,显著性设置在P<0.05.
主要成果:
- 所有测试的肌肉都显示,与休息相比,在脚部曲过程中RMS,MF和DC值显著增加 (P <0.05).
- 长 (PL) 在所有测量指数中表现出最实质性的变化.
- 具体来说,PL的RMS从3.14 ± 1.61μV增加到49.31 ± 21.81μV,MF从134.07 ± 30.86 Hz增加到203.55 ± 28.36 Hz,DC从2.24 ± 0.38增加到3.33 ± 0.41.
结论:
- 非线性指数,度中心度 (DC),有效地反映了脚部曲期间的小腿肌肉激活.
- DC与线性指数一起,在倾斜脚部曲过程中显示出显著的增加,特别是在长部.
- 非线性指数DC显示为评估单个肌肉协同参与和神经系统控制复杂运动的新型指标.
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