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一只手的推力与力量施加的主观评级之间的关系
Cannan Yi1, Dan Yang1, Shuyi Zhou1
1School of Safety and Management Engineering, Hunan Institute of Technology, Hengyang, China.
Work (Reading, Mass.)
|March 22, 2024
概括
通过新的模型,评估工作场所受伤风险变得更加容易. 这些模型将主观力评级与实际推力联系起来,有助于预测肌肉骨疾病风险.
科学领域:
- 人体工程学和人类因素
- 职业健康和安全问题 职业健康和安全问题
- 生物力学 生物力学
背景情况:
- 工作场所的压力活动可能导致肌肉骨系统疾病 (MSDs).
- 评估MSD风险可以通过将施加的力与主观的劳动力等级相关联来简化.
- 了解这种关系是制定有效的预防策略的关键.
研究的目的:
- 调查主观力量施加等级与施加的推力之间的关系.
- 为了比较固定与可移动手柄的力施加.
- 为了验证更高的单手推力,在肩高度与肘高度相比应用于肩高度.
主要方法:
- 进行了一只手推推的实验.
- 参与者使用CR-10尺度来评价他们感知到的劳动力,同时推动一个可移动的手柄.
- 推力是在涉及固定和可移动手柄在不同高度水平的推动任务期间测量的.
主要成果:
- 一只手的推力在肩高度明显大于肘高度.
- 推动一个可移动的手柄需要更多的感知力 (更高的CR-10评分) 比固定手柄在同等的力级.
- 开发了两个适当的回归模型,以将推力与CR-10等级对两个手柄类型进行相关联.
结论:
- 该研究证实,在肩高度施加更高的推力,可移动的手柄所施加的力度增加.
- 开发的预测模型可以估计职业环境中的单手推力.
- 这些模型提供了一个有价值的工具,用于评估MSD风险在涉及推的任务.
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