Integrated Systems Engineering, The Ohio State University, Columbus, OH, USA; Department of Orthopedics, The Ohio State University, Columbus, OH, USA.
Department of Disability and Human Development, The University of Illinois at Chicago, Chicago, IL, USA.
Appl Ergon. 2014 May;45(3):389-97. doi: 10.1016/j.apergo.2013.05.005. Epub 2013 Jun 4.
The physical demands on firefighting personnel were investigated when using different types of hand-carried stair descent devices designed for the emergency evacuation of high rise buildings as a function of staircase width and evacuation urgency. Twelve firefighters used three hand-carried stair descent devices during simulated urgent and non-urgent evacuations. The devices were evaluated under three staircase width conditions (0.91, 1.12, and 1.32 m). For comparison, an urgent manual carry was also performed on the 1.12 m wide stairs. Dependent measures included electromyographic (EMG) data, heart rates, Borg Scale ratings, task durations and descent velocities. Results indicated that the stair chair with extended front handles, which allows the front person to descend the stairs facing forward, reduced the time integrated back muscle EMG by half and showed a descent velocity that was 1.8 times faster than the other stair descent devices in the study. There were no differences across staircase widths.
当使用不同类型的手提式楼梯下降装置作为高层建筑紧急疏散的功能，根据楼梯宽度和疏散紧急程度，对消防人员的身体需求进行了研究。12 名消防员在模拟紧急和非紧急疏散情况下使用了三种手提式楼梯下降装置。该装置在三种楼梯宽度条件下（0.91、1.12 和 1.32 米）进行了评估。为了进行比较，在 1.12 米宽的楼梯上也进行了紧急手动搬运。依赖措施包括肌电图（EMG）数据、心率、Borg 量表评分、任务持续时间和下降速度。结果表明，带前置手柄的楼梯椅，允许前一个人面对楼梯向前下降，将背部肌肉的积分肌电图减少了一半，下降速度比研究中的其他楼梯下降装置快 1.8 倍。楼梯宽度没有差异。
