肌肉骨疲劳反应的变化与连续几天完成的职业上空钻井任务的重复暴露有关
Matthew S Russell1, Sam S Vasilounis1, Emily Lefebvre1
1School of Kinesiology and Health Science, York University, Canada.
Human movement science
|August 30, 2024
概括
工人可以在一周内学习和提高空气钻井效率. 疲劳反应显示,第二天肌肉激活变化减少,关节运动策略改善,表明学习效应.
科学领域:
- 生物力学 生物力学
- 职业健康 职业健康 职业健康
- 发动机控制器的控制器
背景情况:
- 头部工作疲劳反应在个人内部和个人之间表现出显著的日常变化.
- 了解疲劳反应的可重现性对于设计有效干预措施至关重要.
研究的目的:
- 在空中钻井任务期间,调查电肌图 (EMG),动力学和动力学反应的日常一致性,直到意志疲劳.
- 为了确定学习效应是否会影响疲劳反应,当任务在一周后重复时.
主要方法:
- 15名男性和14名女性参与者在两天分别进行了空中钻探任务,以对抗意志疲劳,每天隔一周.
- 记录了7个肩膀肌肉的表面和肌肉内电磁图,上肢动力学和动力学.
- 分析包括EMG平均功率频率 (MPF),根-平均-平方 (RMS) 振幅,关节角度和关节时刻.
主要成果:
- 没有观察到EMG MPF每天的显著变化. 前脊椎在第二天显示EMG RMS的增加较小.
- 不疲倦的动力学在第二天有所不同,胸腔骨升高和肘部曲增加.
- 在第二天,与疲劳相关的肩关节曲时刻变化减少了,这表明了学习的,更有效的策略.
结论:
- 反复暴露在空中钻探可能会导致动力学学习,提高效率和改变疲劳反应.
- 虽然一些肌肉疲劳指标是一致的,但其他和动力学策略显示了日常适应.
- 这些发现表明,运动学习可以影响神经肌肉和生物机械对疲劳的空头工作的反应.
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