Malchaire J B, Masset D F
Occupational Hygiene and Work Physiology Unit, Catholic University of Louvain, Brussels, Belgium.
Spine (Phila Pa 1976). 1995 Aug 1;20(15):1649-56. doi: 10.1097/00007632-199508000-00001.
Static and dynamic performances of the trunk were measured on an isoinertial device and data were collected regarding the working conditions and the anthropometric and psychosocial characteristics of the workers.
To describe the difference in static and dynamic performances of the trunk between workers with and without low back pain and to investigate the anthropometric, personal, and occupational factors associated with these performances.
The isometric torque and the parameters of displacement, velocity, and torque during dynamic tests were chosen to describe the isoinertial performances of the trunk. Dynamic characteristics in particular were investigated because it has been suggested in the literature that these discriminate best between workers with and without low back pain.
The protocol included a 52-item questionnaire, a clinical examination with a series of anthropometric measurements, and the isometric and dynamic tests (against 25% and 50% of the isometric values) on the isostation.
The variables significantly associated with the trunk performances were weight, height, muscularity, sports, and leisure activities as positive factors, and linearity, health problems, and vehicle driving as negative factors. When these covariates were taken into consideration, the significant differences between subjects with and without low back pain were related only to the velocities during dynamic tests, which were reduced by 5.9%.
The performances of the trunk are associated mainly with the anthropometric characteristics of the subjects but also with factors such as lumbar status, health, working conditions, and leisure activities.
在等惯性装置上测量躯干的静态和动态性能，并收集有关工作条件以及工人的人体测量和心理社会特征的数据。
描述有和没有腰痛的工人之间躯干静态和动态性能的差异，并调查与这些性能相关的人体测量、个人和职业因素。
选择等长扭矩以及动态测试期间的位移、速度和扭矩参数来描述躯干的等惯性性能。特别研究了动态特征，因为文献中表明这些特征在有和没有腰痛的工人之间具有最佳区分度。
该方案包括一份52项问卷、一次带有一系列人体测量的临床检查，以及在等动训练仪上进行的等长和动态测试（对抗25%和50%的等长值）。
与躯干性能显著相关的变量包括体重、身高、肌肉发达程度、运动和休闲活动等积极因素，以及身体线条、健康问题和车辆驾驶等消极因素。当考虑这些协变量时，有和没有腰痛的受试者之间的显著差异仅与动态测试期间的速度有关，速度降低了5.9%。
躯干的性能主要与受试者的人体测量特征相关，但也与腰椎状况、健康、工作条件和休闲活动等因素有关。
