对NMES的中央介导反应受肌肉群和刺激参数的影响
Timothée Popesco1, Quentin Gardet1, Jonathan Bossard1
1Institute of Sport Sciences, University of Lausanne, Lausanne, 1015, Switzerland.
Scientific reports
|October 22, 2024
概括
宽脉冲高频神经肌肉电刺激 (NMES) 与上肢肌肉相比,在下肢肌肉中产生更大的额外力量,特别是脚部 flexors. 这表明NMES在下肢反射招募方面更有效.
科学领域:
- 神经肌肉生理学 神经肌肉生理学
- 康复工程 康复工程
背景情况:
- 宽脉冲高频神经肌肉电刺激 (WPHF NMES) 通过反射运动单元招募产生额外的力量.
- 在这种现象中,肌肉间的差异尚未得到充分理解.
研究的目的:
- 为了比较NMES在不同肌肉群之间诱导的额外力量和持续的电肌图学 (EMG) 活动.
- 研究脉冲持续时间和刺激频率对这些反应的影响.
主要方法:
- 使用NMES刺激了足部 flexors,膝盖延伸器和肘部 flexors.
- 脉冲持续时间 (0.2,1,2毫秒) 和频率 (20,50,100,147赫兹) 系统地变化.
- 测量了额外的力量产生和持续的EMG活动.
主要成果:
- 在大多数参数中,足部曲器表现出比肘部曲器更高的额外力和EMG活动.
- 在特定条件下,膝盖延伸器与肘部曲器相比,显示出更大的额外力和EMG活动.
- 差异表明外围神经架构和肌肉特征的影响.
结论:
- 由WPHFNMES诱导的反射招募在肌肉群之间有显著差异.
- 脚 flexors 显示出更明显的响应,表明更适合用于下肢应用.
- 神经结构和肌肉类型学可能会调解这些NMES诱导的反应.
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