School of Health Sciences, City East Campus, University of South Australia, Corner Frome Rd and North Terrace, Adelaide, South Australia 5000, Australia.
School of Public Health and Social Work, Queensland University of Technology, Victoria Park Road, Kelvin Grove, Queensland 4059, Australia.
Appl Ergon. 2014 Jul;45(4):849-56. doi: 10.1016/j.apergo.2013.11.001. Epub 2013 Nov 15.
Battery powered bed movers are becoming increasingly common within the hospital setting. The use of powered bed movers is believed to result in reduced physical efforts required by health care workers, which may be associated with a decreased risk of occupation related injuries. However, little work has been conducted assessing how powered bed movers impact on levels of physiological strain and muscle activation for the user. The muscular efforts associated with moving hospital beds using three different methods; powered StaminaLift Bed Mover (PBM1), powered Gzunda Bed Mover (PBM2) and manual pushing were measured on six male subjects. Fourteen muscles were assessed moving a weighted hospital bed along a standardized route in an Australian hospital environment. Trunk inclination and upper spine acceleration were also quantified. Powered bed movers exhibited significantly lower muscle activation levels than manual pushing for the majority of muscles. When using the PBM1, users adopted a more upright posture which was maintained while performing different tasks (e.g. turning a corner, entering a lift), while trunk inclination varied considerably for manual pushing and the PBM2. The reduction in lower back muscular activation levels may result in lower incidence of lower back injury.
电动病床移位器在医院环境中越来越普遍。人们认为，使用电动病床移位器可以减少医护人员所需的体力，从而降低与职业相关的受伤风险。然而，很少有研究评估电动病床移位器对使用者生理应变和肌肉激活水平的影响。本研究使用三种不同的方法（电动 StaminaLift 床移位器（PBM1）、电动 Gzunda 床移位器（PBM2）和手动推动）对 6 名男性受试者移动医院病床时的肌肉用力进行了测量。在澳大利亚医院环境中，沿着标准化路线移动一张带重物的病床，评估了 14 块肌肉。还对躯干倾斜和上脊柱加速度进行了量化。与手动推动相比，电动床移位器在大多数情况下的肌肉激活水平明显较低。当使用 PBM1 时，使用者采取了更直立的姿势，并且在执行不同任务（例如转弯、进入电梯）时保持该姿势，而手动推动和 PBM2 的躯干倾斜变化很大。下背部肌肉激活水平的降低可能会降低下背部受伤的发生率。
