使用力或EMG外作为电机控制系统的反信号
M Cogliati1, A Cudicio1, C Orizio1
1Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa, 11, 25123 Brescia, Italy.
概括
这项研究研究了强力和神经反任务期间的肌肉神经力学. 结果显示,在力量下降过程中肌肉反应的差异,突出显示在运动控制研究中需要仔细评估反.
科学领域:
- 神经科学是一个神经科学.
- 生物力学 生物力学
- 发动机控制器的控制器
背景情况:
- 了解肌肉神经机械对于运动控制研究至关重要.
- 肌肉活动和力量产生是由反机制调节的.
研究的目的:
- 在对称的上升坡道 (UGR) 和下降坡道 (DGR) 运动中调查肌肉神经力学.
- 为了评估力量反 (FF) 和神经反 (NF) 对力量调节期间肌肉行为的影响.
主要方法:
- 20名受试者执行了涉及背内骨肌 (FDI) 和前肌 (TA) 肌肉的任务.
- 强力和电肌图 (EMG) 信号在FF或NF的斜坡收缩期间被记录下来.
- 电机合效率 (EMCE) 被计算为EMG外面积与力面积的比.
主要成果:
- 强力反 (FF) 对肌肉和强力水平之间的EMG外面积比率产生了不同的影响.
- 神经反 (NF) 导致力面积比接近1,表明神经驱动和力输出之间存在直接关系.
- 在所有条件下,电机合效率 (EMCE) 在下行坡道 (DGR) 期间与上行坡道 (UGR) 相比始终更高.
结论:
- 在DGR期间观察到的EMCE差异表明,肌肉力量衰减受到前面的肌肉活动的影响.
- 这些发现强调了在运动控制研究和康复中考虑反特征的重要性.
- 为了在实验和临床环境中有效应用,需要对FF和NF进行仔细评估.
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