Academic Medical Center, University of Amsterdam, Coronel Institute of Occupational Health, the Netherlands.
Am J Ind Med. 2010 Jun;53(6):608-14. doi: 10.1002/ajim.20793.
This study evaluated the effects of a combination of three ergonomic measures designed to reduce the risk of low back complaints among gypsum bricklayers. The measures focused on optimizing working height and reducing carrying distances.
A within-subjects (N = 10) controlled field study was used to compare the effects of working with the ergonomic measures with those of working with conventional working methods at the worksite during the course of a full working day. Productivity, work demands, and workload were assessed.
No effects were found on productivity, total work time, duration of tasks, duration of carrying, or energetic or biomechanical workload. However, the duration and frequency of working between knee and hip height during a working day increased by 25% and 15%, respectively, due to the ergonomic measures. During the finishing task, the duration and frequency of working below knee level decreased significantly by 4 min and 71 times, respectively.
The limited impact of the ergonomic measures argues for additional measures to reduce the risk of low back complaints.
本研究评估了三种旨在降低石膏瓦工腰背疼痛风险的人体工程学措施的组合效果。这些措施侧重于优化工作高度和减少搬运距离。
采用自身对照（N=10）的现场控制研究，在全天的工作过程中，比较了在工作现场使用人体工程学措施与使用传统工作方法的效果。评估了生产力、工作需求和工作负荷。
在生产力、总工作时间、任务持续时间、搬运持续时间或能量和生物力学工作负荷方面均未发现影响。然而，由于人体工程学措施，工作期间膝盖和臀部高度之间的工作时间和频率分别增加了 25%和 15%。在收尾任务中，工作在膝盖以下水平的时间和频率分别显著减少了 4 分钟和 71 次。
人体工程学措施的有限影响表明需要采取额外措施来降低腰背疼痛的风险。
