Bridger R S, Wilkinson D, van Houweninge T
Hum Factors. 1989 Apr;31(2):229-41. doi: 10.1177/001872088903100210.
The spinal angles of 25 female subjects were measured in standing and in four different sitting postures with various trunk-thigh angles. Additionally, measurements of hip and lumbar mobility were made in an attempt to relate mobility to spinal curvature in the different sitting postures. Lumbar curvature was observed to decrease as the trunk-thigh angle decreased across the different sitting postures, and reduction in curvature was associated with hip mobility. An exploratory analysis of interrelationships among hip mobility, spinal mobility, and spinal curvature was also carried out. A significant correlation between lumbar and thoracic angular deviations in standing and hip flexion/extension range was obtained. The findings are discussed with reference to theories of sitting posture and the influence of hip joint mobility on postural adaptations to furniture. Further investigations, including studies of male subjects, are indicated.
对25名女性受试者在站立位以及四种不同坐姿（躯干与大腿呈不同角度）下的脊柱角度进行了测量。此外，还对髋部和腰部的活动度进行了测量，以试图找出不同坐姿下活动度与脊柱曲度之间的关系。观察到在不同坐姿中，随着躯干与大腿角度减小，腰椎曲度会降低，并且曲度的减小与髋部活动度相关。还对髋部活动度、脊柱活动度和脊柱曲度之间的相互关系进行了探索性分析。得出站立位时腰椎和胸椎角度偏差与髋部屈伸范围之间存在显著相关性。结合坐姿理论以及髋关节活动度对家具姿势适应性的影响对研究结果进行了讨论。指出需要进行进一步的研究，包括对男性受试者的研究。
