Wu C S, Miyamoto H, Noro K
School of Human Sciences, Waseda University, Tokorozawa, Japan.
Ergonomics. 1998 Mar;41(3):317-27. doi: 10.1080/001401398187062.
A pelvic support consisting of a forward sloping wedge of foam has been tested as an addition to conventional office seating for VDT work. In experiment 1 a questionnaire investigation was carried out on the impressions of 10 male and 10 female subjects who sat using pelvic supports. A general result from the questionnaire was that the waist and pelvis were felt to be stable and the evaluation was more positive with the support than without. In experiment 2, pelvis and chest inclinations were measured during sitting with and without the pelvic support. Over a long work period, significant differences were not observed. In both cases, subjects were able to move freely and there were no significant changes in posture. In experiment 3, pelvis and chest inclinations were measured in conditions of no pelvic support and with supports of 10, 20 and 30 degrees. The experiment demonstrated that a support angle of 10 degrees was stable and comfortable. In this research, it was found that the change of inclination of the pelvis can be measured continuously using an angle of inclination sensor. Imposing a forward slope of 4 to 10 degrees on the seat pan surface using the pelvic support had a positive effect, while angles of 20 and 30 degrees had a negative effect.
一种由向前倾斜的泡沫楔块组成的骨盆支撑装置，已作为传统办公座椅的附加装置用于VDT工作进行了测试。在实验1中，对10名男性和10名女性受试者使用骨盆支撑装置就座后的感受进行了问卷调查。问卷调查的总体结果是，人们感觉腰部和骨盆更加稳定，使用支撑装置时的评价比不使用时更为积极。在实验2中，测量了使用和不使用骨盆支撑装置时就座过程中的骨盆和胸部倾斜度。在较长的工作时间段内，未观察到显著差异。在这两种情况下，受试者都能够自由移动，姿势也没有显著变化。在实验3中，在不使用骨盆支撑装置以及使用10度、20度和30度支撑装置的条件下测量了骨盆和胸部倾斜度。实验表明，10度的支撑角度稳定且舒适。在这项研究中，发现使用倾斜角度传感器可以连续测量骨盆倾斜度的变化。使用骨盆支撑装置在座椅表面施加4至10度的向前倾斜度有积极效果，而20度和30度的角度则有消极效果。
