干部延伸肌肉耐力及其与动能传导速度及其使用高密度电肌图学估计的光谱参数的关系
Niels P Brouwer1, Ali Tabasi1, Idsart Kingma1
1Department of Human Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands.
概括
动力单元动力电位传导速度 (CV) 的变化速率是干部延伸器肌肉疲劳和耐力的一个强有力的指标. 这一发现为使用电肌图学监测肌肉疲劳提供了指导.
科学领域:
- 生物力学 生物力学
- 神经生理学 神经生理学
- 运动生理学 运动生理学
背景情况:
- 干部伸展肌肉疲劳通常通过表面电肌图 (sEMG) 的降低光谱含量来表示.
- 以前的研究表明,sEMG光谱含量下降和干部伸展肌肉耐力之间存在不一致的关系.
- 光谱含量变化主要反映了动力单元动力电位传导速度 (CV) 的变化.
研究的目的:
- 为了研究CV变化速率和干部延伸肌肉耐力之间的关系.
- 为了比较CV变化与光谱内容变化在预测肌肉耐力方面的有效性.
- 提供关于使用电肌图学来监测干部伸展肌肉疲劳的指导.
主要方法:
- 14名健康的男性进行了静态向前曲干部疲劳测试,直到疲.
- 使用高密度表面电肌图 (sEMG) 来记录从T6到L5.5的肌肉活动.
- 获得了生理学上可信的导电速度 (CV) 估计值,并计算了CV和光谱测量的线性变化率.
主要成果:
- 在侧面电极位置 (L1-L2) 的 CV 变化线性速率和耐力时间之间发现了强烈的相关性 (R2 = 0.79).
- 基于光谱含量变化的分析显示,相关性较低 (R2 = 0.38) 或与耐力时间没有相关性.
- 在介质电极位置的光谱测量中观察到中等的相关性 (R2 = 0.44;R2 = 0.56).
结论:
- 导电速度 (CV) 的变化速率是一个比光谱含量变化更可靠的干部延伸器肌肉耐力指标.
- 侧面电极放置 (L1-L2) 对于估计CV及其与耐力之间的关系更有效.
- 这项研究为利用肌电图来监测干部延伸肌肉疲劳的发展提供了有价值的见解.
关键词:
在EMGEMGEMGEMGEMGEMGEMGEMGEMGEM勃起器的脊柱是什么意思疲劳 疲劳 疲劳 疲劳 疲劳低背部的低背部部分腰部 腰部 腰部 腰部副脊柱肌肉 副脊柱肌肉 副脊柱肌肉 副脊柱肌肉更多相关视频
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