部和肩部肌肉疲劳值的变化,当使用被动头部/部支外骨架在重复的空头任务期间
Ehsan Garosi1, Zeinab Kazemi2, Adel Mazloumi3
1Iran University of Medical Sciences, Tehran, Iran.
Human factors
|November 13, 2023
概括
头部/部支外骨 (HNSE) 显著延迟了头部工人肌肉疲劳的发生,特别是在关节肌肉. 这表明HNSE是减少肌肉骨疾病风险的有希望的人体工程学工具.
科学领域:
- 人体工程学和人类因素
- 生物力学 生物力学
- 职业健康 职业健康 职业健康
背景情况:
- 空头工作任务对部和肩部肌肉骨疾病构成重大风险.
- 对部和肩部肌肉和关节的过度压力是空头劳动的主要问题.
- 了解疲劳机制对于开发有效干预措施至关重要.
研究的目的:
- 评估头部/部支外骨架 (HNSE) 对肌肉疲劳的影响.
- 为了确定HNSE对部和肩部肌肉的电肌图疲劳值 (EMGFT) 的影响.
- 在模拟的空头工作任务中评估HNSE的有效性.
主要方法:
- 14名健康的男性执行了一项重复的空中任务,直到疲.
- 参与者在不同的部延伸角度 (40%和80%的最大) 完成了HNSE和没有HNSE的任务.
- 来自部和肩膀肌肉的电肌图 (EMG) 信号被分析以确定EMGFT.
主要成果:
- 在HNSE显著增加的EMGFT在硬骨肌 (SCM) 和上梯形肌 (UTR) 肌肉.
- 在使用HNSE时,SCMR,SCML和UTR肌肉的疲劳发作被延迟.
- 没有观察到对骨或左形EMGFT的显著影响;部角度没有显著影响.
结论:
- HNSE有效地延迟了特定部肌肉的疲劳发作,表明其作为人体工程学干预的潜力.
- 这些发现支持使用EMGFT来评估外骨在降低职业肌肉骨疾病风险方面的有效性.
- 建议进行进一步的研究,以探索HNSE在各种任务和条件中的影响.
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