Department of Kinesiology, Faculty of Applied Health Sciences, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1.
Appl Ergon. 2012 Sep;43(5):859-67. doi: 10.1016/j.apergo.2011.12.009. Epub 2012 Feb 6.
Prolonged occupational police driving combined with use of an in-vehicle computer elicits awkward, sustained postures in a scenario that lacks the adjustability to accommodate many mobile officer anthropometries and job-specific components. Twenty participants performed simulated police patrol sessions at five mobile data terminal (MDT) locations and using two seats: standard police vehicle seat and modified seat designed for police use. An MDT location self-selected prior to the session reduced perceived discomfort by up to 50% in the low back (p < .0001) and 68% in the right shoulder (p < .0001) compared to other tested locations, including the most common currently used location recorded from a representative police force. Muscle activity was lowest at the self-selected and current MDT locations for all muscles, significantly so for posterior deltoid (p < .0001) and supraspinatus (p < .0001). The modified seat reduced low back discomfort from the standard seat by 28% (p < .0001). Combining a self-selected MDT location and modified driver seat generated lower discomfort and physical loading than the currently used configuration.
长时间的职业警察驾驶加上车内电脑的使用，在缺乏可适应许多移动警察人体工程学和特定工作组件的可调性的情况下，会导致不自然、持续的姿势。20 名参与者在五个移动数据终端 (MDT) 位置和使用两个座位：标准警车座椅和专为警察使用而设计的改良座椅，进行了模拟警察巡逻。与其他测试位置相比，参与者在会前自行选择的 MDT 位置可以将背部下部的不适感降低高达 50%（p<.0001），右肩部的不适感降低 68%（p<.0001），包括从代表性警察部队记录的当前最常用位置。在所有肌肉中，自我选择和当前 MDT 位置的肌肉活动最低，尤其是在后三角肌（p<.0001）和冈上肌（p<.0001）。改良座椅将标准座椅的下背部不适感降低了 28%（p<.0001）。选择自我选择的 MDT 位置和改良驾驶员座椅可以减少不适感和身体负荷，优于当前使用的配置。
