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.

这项研究的目的是比较两个减轻人体不适和安全风险的人体工程学运输椅（Stryker®Prime TC和Staxi®医疗椅）和两个轮椅之间的照护者肌肉激活情况和关节角度。二十三名护理人员分别用每台设备和一台84公斤人体模型完成了水平步行和坡道任务。收集上肢和背部肌肉的表面肌电图和运动数据。与Stryker椅子相比（P≤0.078），Staxi显示出较高的腕部伸肌和腕屈腕活动统计趋势（p≤0.078），而腕部屈曲比Stryker和仓库椅更大（p≤0.004）。库房座椅的峰值躯干屈曲强度比Stryker座椅更大（p = 0.004）。