在骑自行车时,在膝盖延伸肌肉上引起的跨脑磁刺激反应的可靠性
Jenny Zhang1, Zachary J McClean1, Neda Khaledi1,2
1Faculty of Kinesiology, University of Calgary, KNB 420, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada.
Experimental brain research
|May 28, 2024
概括
这项研究发现,运动唤起潜力 (MEP) 和长间隔内皮层抑制 (LICI) 在骑自行车时可靠. 短间歇性皮质内抑制 (SICI) 在会议中显示出不良可靠性,但在会议内可靠.
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
- 运动生理学 运动生理学
背景情况:
- 超磁刺激 (TMS) 评估皮质运动刺激性和抑制性.
- 在像骑自行车这样的动态运动中,TMS的应用较少被探索.
- 在疲劳的循环任务中,TMS配对脉冲的可靠性需要评估.
研究的目的:
- 为了评估运动唤起潜力 (MEP) 和皮质内抑制 (SICI,LICI) 在疲劳单腿骑自行车任务中的可靠性.
- 为了评估TMS的测量,大侧肌和大腿直肌肌肌肉.
主要方法:
- 9名健康的成年人进行了两次相同的单腿骑自行车,以达到疲劳.
- 在TMS单脉冲和对脉冲,以及大腿神经刺激 (Mmax) 在基线和循环期间每5分钟进行一次.
- 使用类内相关系数 (ICC) 来确定MEP的可靠性,将其规范化为Mmax (MEP·Mmax-1),SICI和LICI.
主要成果:
- 在会话中,MEP·Mmax-1和LICI显示出极好的可靠性 (ICC>0.9),而SICI则很好 (ICC:0.7-0.9).
- 在基线会议之间,Mmax和MEP·Mmax-1显示出良好的可靠性 (ICC:0.7-0.9),LICI是中度的 (ICC:0.5),SICI是差的 (ICC:0.3).
- 在疲劳循环时,Mmax (ICC>0.8),MEP·Mmax-1和LICI (ICC:0.5-0.9) 显示出良好的可靠性,而SICI的可靠性仍然很差 (ICC:0.3-0.6).
结论:
- 运动唤起的潜能 (MEP·Mmax-1),最大的股骨神经刺激 (Mmax) 和长间隔的皮内抑制 (LICI) 是骑自行车时可靠的测量.
- 短间歇性皮质内抑制 (SICI) 在不同疗程中显示出不良可靠性,但在单个疗程内可靠.
- 模式特定测试测量至关重要,TMS措施如Mmax,MEP·Mmax-1和LICI适用于自行车研究.
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