Magnusson M, Granqvist M, Jonson R, Lindell V, Lundberg U, Wallin L, Hansson T
Department of Orthopaedics, Sahlgren Hospital, Gothenburg University, Sweden.
Spine (Phila Pa 1976). 1990 Aug;15(8):774-9.
This study was performed in an attempt to determine the total spinal compressive load during assembly line work to find a possible association with the many complaints of back pain. A flexion analyzer was used to register trunk movements, and analysis of postures and lifted weights was done from video recordings. The load on the spine at the L3 level was calculated through a biomechanical model, meant for analysis of static, sagittally symmetric postures and lifting tasks. Maximum lift tests were performed before and after a full work day. The peak load on the L3-L4 level when lifting corresponded to an average 22% of the load at the lift test. The mean load during a work cycle was 818 N. It was concluded that the many complaints of back pain could not be attributed to high peak loads, repetitivity of the lifts, or large load doses. Monotony, stress, and low job satisfaction are more likely factors of greater importance.
本研究旨在确定装配线工作期间脊柱的总压缩负荷，以寻找其与众多背痛投诉之间可能存在的关联。使用了一个屈曲分析仪来记录躯干运动，并通过视频记录对姿势和举起的重量进行分析。通过一个生物力学模型计算L3水平处脊柱的负荷，该模型用于分析静态、矢状面对称姿势和举重任务。在完整工作日前后进行了最大举重测试。举重时L3-L4水平的峰值负荷相当于举重测试时负荷的平均22%。一个工作周期内的平均负荷为818 N。得出的结论是，众多背痛投诉不能归因于高峰负荷、举重的重复性或大剂量负荷。单调、压力和低工作满意度更可能是更重要的因素。
