Human Engineering Research Laboratories, VA Pittsburgh Healthcare System, Pittsburgh, PA, USA; Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, PA, USA.
Department of Athletic Training, University of Pittsburgh, Pittsburgh, PA, USA.
Appl Ergon. 2020 Oct;88:103172. doi: 10.1016/j.apergo.2020.103172. Epub 2020 Jun 8.
The purpose of this study was to compare caregiver muscle activation and joint angles between two ergonomic transport chairs designed to mitigate discomfort and safety risks associated with patient transport, the Stryker® Prime TC and the Staxi® Medical Chair, and a depot wheelchair. Twenty-three caregivers completed level walking and ramped tasks with each device and an 84 kg manikin. Surface electromyography for the upper extremities and back muscles and motion data were collected. The Staxi showed a statistical trend for higher wrist extensor and flexor carpi ulnaris activity compared to the Stryker chair (p ≤ 0.078) and greater wrist flexion than the Stryker and depot chairs (p ≤ 0.004). The depot chair showed greater peak trunk flexion than the Stryker chair (p = 0.004). Overall results suggest that ergonomic chair design may improve joint positioning of the trunk and elbows when operating patient transport chairs over level and ramped surfaces.
本研究的目的是比较两种旨在减轻与患者转运相关的不适和安全风险的人体工程学转运椅（Stryker® Prime TC 和 Staxi® Medical Chair）与 depot 轮椅之间的照顾者肌肉激活和关节角度。23 名照顾者使用每种设备和 84 公斤的人体模型完成了水平行走和爬坡任务。收集上肢和背部肌肉的表面肌电图和运动数据。与 Stryker 椅相比，Staxi 显示出腕伸肌和尺侧腕屈肌活动更高的统计学趋势（p ≤ 0.078），并且腕关节屈曲度大于 Stryker 和 depot 椅（p ≤ 0.004）。depot 椅的躯干前屈峰值大于 Stryker 椅（p = 0.004）。总体结果表明，在水平和倾斜表面操作患者转运椅时，人体工程学椅设计可能会改善躯干和肘部的关节定位。
