Eklund J A, Corlett E N
Spine (Phila Pa 1976). 1984 Mar;9(2):189-94. doi: 10.1097/00007632-198403000-00009.
A new method for measuring spinal load is proposed, whereby changes in body height are used as a measure of disc compression. The rate and magnitude of disc compression are caused by the loading and its temporal pattern. A device is reported for measuring body height (SD less than 1 mm). Experiments showed the dinural shrinkage during a working day and the rapid recovery when lying down. Other experiments demonstrated how the rate of shrinkage is a function of the load on the spine. Further, shrinkage when sitting in different chairs has been compared, and the results are in agreement with disc pressure measurements, reported in the literature. Finally, examples are given of how the method can be used in ergonomic evaluations.
提出了一种测量脊柱负荷的新方法，该方法利用身体高度的变化作为椎间盘压缩程度的度量。椎间盘压缩的速率和幅度由负荷及其时间模式引起。报道了一种用于测量身体高度的装置（标准差小于1毫米）。实验表明，工作日期间身体会出现日间收缩，躺下后能迅速恢复。其他实验证明了收缩速率是脊柱负荷的函数。此外，还比较了坐在不同椅子上时的收缩情况，结果与文献中报道的椎间盘压力测量结果一致。最后，给出了该方法在人体工程学评估中的应用示例。
