在动态肘部曲延伸运动中跟踪肌肉疲劳,随着手负荷的变化
1Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea.
Applied ergonomics
|December 31, 2023
概括
使用电肌图 (EMG) 的肌肉疲劳监测可以在不同的工作强度期间跟踪疲劳. 电磁运动量测量显示,在较重的负载下出现疲劳,在较轻的负载下恢复,有助于风险管理.
科学领域:
- 生物力学 生物力学
- 职业健康 职业健康 职业健康
- 神经科学是一个神经科学.
背景情况:
- 肌肉疲劳监测对于管理疲劳风险和预防肌肉骨损伤至关重要.
- 了解肌肉疲劳在不同负载强度下如何发展,对于优化工作至关重要.
- 电肌图 (EMG) 为实时疲劳评估提供了一个潜在的方法.
研究的目的:
- 调查肌肉疲劳的肌电表现是否可以准确地反映在变化负载强度的动态任务中疲劳的发展.
- 评估EMG疲劳测量的有效性,以应对在肘部运动期间交替高 (2公斤) 和低 (1公斤) 的负载.
主要方法:
- 20名男性参与者进行了16分钟的动态肘部曲延伸运动,交替承担2公斤和1公斤的负载.
- 电肌图 (EMG) 数据是在动态运动和周期性亚最大同位米肘曲试验期间收集的.
- 疲劳的发展和恢复被量化,使用来自双腕的各种EMG疲劳指标.
主要成果:
- 异度和动态EMG测量,不包括动态EMG振幅,都表明在2公斤负载阶段显著肌肉疲劳.
- 当参与者切换到1公斤负载时,观察到部分恢复肌肉功能.
- 这些发现表明EMG可以检测与负载变化相关的肌肉疲劳变化.
结论:
- 在动态职业任务中监测肌肉疲劳时,EMG措施显示出有希望的结果,这些任务涉及波动的负载强度.
- 这种方法可以有助于更有效的疲劳风险管理策略.
- 进一步的研究可以为各种工作环境改进基于EMG的疲劳监测.
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