在前神经肌肉电刺激后,频率依赖的皮质脊柱促进
Shota Tsugaya1, Atsushi Sasaki2, Suzufumi Arai1
1Graduate School of Engineering Science, Osaka University, Osaka, Japan.
Neuroscience
|December 19, 2024
概括
混合频率神经肌肉电刺激 (NMES) 最有效地调节皮质脊髓刺激性. 然而,没有NMES频率显著改善了运动性能或最大自愿收缩.
科学领域:
- 神经科学是一个神经科学.
- 发动机控制器的控制器
- 电子生理学 电子生理学
背景情况:
- 为了达到神经调节效应,神经肌肉电刺激 (NMES) 的最佳刺激频率尚未确立.
- 了解依赖频率的影响对于优化康复和研究中的NMES协议至关重要.
研究的目的:
- 研究不同NMES频率 (低,高和混合) 对皮层和脊柱刺激性的影响.
- 评估这些NMES频率对运动性能和最大自愿收缩的影响.
主要方法:
- 13名健康个体在25 Hz,100 Hz或混合25/100 Hz频率的前肌接受了NMES.
- 用跨磁刺激 (TMS) 测量皮层脊髓刺激性和皮层内抑制.
- 脊柱运动神经元刺激性和神经肌肉传播通过外围神经刺激,以及最大自愿收缩 (MVC) 和运动性能任务来评估.
主要成果:
- 混合频率NMES显示出最显著的皮质脊髓刺激性调制.
- 所有测试的NMES频率都延长了皮质静止期,并抑制了最大运动反应 (Mmax).
- 在任何NMES频率中,没有观察到对F波,MVC或运动性能的显著影响.
结论:
- 与单个频率相比,混合频率NMES可能会招募更广泛的运动单元,这可能解释了它对皮层脊髓刺激能力的增强作用.
- 虽然NMES可以改变神经刺激性,但目前的协议似乎不能提高健康个体的运动性能或力量.
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