Choi S D, Fredericks T K
Department of Occupational and Environmental Safety & Health, University of Wisconsin-Whitewater, Whitewater, WI 53190-1790, USA.
Ergonomics. 2008 Mar;51(3):330-44. doi: 10.1080/00140130701652824.
The purpose of this study was to investigate the influence of surface slopes (18 degrees , 26 degrees , 34 degrees ) on the maximum acceptable roof shingling frequency for males performing a simulated roof-shingling task. The psychophysical roof shingling frequency was also compared to the postural sway and trunk motion values. The maximum acceptable roof shingling frequency and selected trunk motion decreased significantly with an increase in slope. Postural sway however increased significantly with an increase in slope. The study also revealed that workers were experiencing a greater postural sway at the earlier phase of task on the steeper surface. This suggests that there might be an adaptation period associated with working on a slope and the body's ability to compensate for a loss of balance. Therefore, more emphasis should be given to the workers in this adaptation period, with additional monitoring and cautionary measures. Collectively, the findings of the study could be utilized for improving work practices on roofs, while reducing the potential risks of falls in roofing construction.
本研究的目的是调查表面坡度（18度、26度、34度）对男性在执行模拟屋顶铺设任务时最大可接受的屋顶铺设频率的影响。还将心理物理学屋顶铺设频率与姿势摆动和躯干运动值进行了比较。随着坡度增加，最大可接受的屋顶铺设频率和选定的躯干运动显著降低。然而，姿势摆动随着坡度增加而显著增加。该研究还表明，在较陡表面上任务的早期阶段，工人经历了更大的姿势摆动。这表明在斜坡上工作可能存在一个适应期，以及身体补偿平衡丧失的能力。因此，在这个适应期应更加重视工人，并采取额外的监测和预防措施。总体而言，该研究结果可用于改进屋顶作业实践，同时降低屋顶施工中跌倒的潜在风险。
