在短期疲劳后,力感的恢复
Lin Li1, Yan-Xia Li2, Chong-Long Zhang3
1Department of Physical Education, Renmin University of China, No. 59 Zhongguancun Street, Beijing, 100872, China.
Scientific reports
|June 9, 2023
概括
短期疲劳显著损害了力感觉的准确性,在60秒内观察到恢复. 这项研究表明,外围感官反在力感知知觉中起着至关重要的作用.
科学领域:
- 神经科学是一个神经科学.
- 人体生理学 人体生理学
- 发动机控制器的控制器
背景情况:
- 力量感觉,感知和控制力量产生的能力,对于运动任务至关重要.
- 力量感觉 (中心与外围) 的确切起源仍然是研究的主题.
- 了解疲劳对力感的影响对于各种体力活动和康复至关重要.
研究的目的:
- 调查力感的起源,特别是检查中央与外围贡献.
- 分析短期疲劳对力感知精度及其恢复的急性影响.
- 为了确定疲劳引起的强力损伤的持续时间,意义上.
主要方法:
- 20名年轻的中国参与者 (10名男性,10名女性) 接受了一项疲劳方案,涉及到最大自愿的同位数收缩.
- 通过要求参与者在疲劳之前和疲劳后的各种时间点产生目标力 (10%的最大自发同度收缩) 来评估压力力感.
- 测量绝对误差,可变误差和常量误差以量化力感知精度和方向性.
主要成果:
- 在疲劳后立即,绝对误差显著增加,表明力感知精度降低.
- 强力感知精度显示,在10-30秒内部分恢复,在疲劳后60秒内完全恢复.
- 恒定误差表明,在疲劳之前和疲劳后立即估计过多的力量,恢复时间超过300秒.
结论:
- 短期疲劳显著损害了力感的准确性,而外围感官机制有助于这种缺陷.
- 劳动力感知精度在疲劳后的60秒内恢复,这表明中央和外围因素之间的动态相互作用.
- 这些发现支持了这一观点,即外围 afferent反是力感起源的重要组成部分.
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