Department of Industrial and Management Engineering ErgoMechanics Lab, Hanyang University, Sa 3Dong, Sangrok-gu, Ansan 426-791, Republic of Korea.
Appl Ergon. 2012 May;43(3):574-81. doi: 10.1016/j.apergo.2011.09.002. Epub 2011 Oct 8.
Work performed on scaffolds carries the risk of falling that disproportionately threatens the safety and health of novice construction workers. Hence, objective measures of the postural stability, cardiovascular stress, and subjective difficulty in maintaining postural balance were evaluated for four expert and four novice construction workers performing a manual task in a standing posture on a scaffold with and without safety handrails at two different elevation heights. Based on a multivariate analysis of variance, the experience, scaffold height, and presence of a handrail were found to significantly affect measures of the postural stability and cardiovascular stress. At a lower level of worker experience, a higher scaffold height, and in the absence of a handrail (which may correspond to higher risk of a fall), postural stability was significantly reduced, while cardiovascular stress and subjective difficulties in maintaining postural balance increased. We emphasize the importance of training and handrails for fall prevention at construction sites.
在脚手架上工作存在坠落风险，这对新手建筑工人的安全和健康构成了不成比例的威胁。因此，评估了四名专家和四名新手建筑工人在有和没有安全扶手的情况下，在两个不同的高度站在脚手架上执行手动任务时的姿势稳定性、心血管压力和维持姿势平衡的主观难度的客观测量值。基于多变量方差分析，发现经验、脚手架高度和扶手的存在显著影响姿势稳定性和心血管压力的测量值。在工人经验较低、脚手架较高且没有扶手（可能对应更高的坠落风险）的情况下，姿势稳定性明显降低，而心血管压力和维持姿势平衡的主观难度增加。我们强调在建筑工地进行培训和使用扶手以预防坠落的重要性。
