J Orthop Sports Phys Ther. 1987;9(3):70-6. doi: 10.2519/jospt.1987.9.2.70.
The purpose of this study was to measure the effects of lifting, placing, and removing different magnitudes of loads on the spinal stress. Eight male volunteers were measured for spinal stress utilizing intra-abdominal pressure (IAP). The loads used in the lifting tasks to different vertical and horizontal levels, varied from 5 kg up to 15 kg and were placed in a random order. The ANOVA analysis revealed significant individual variation (p < 0.001) both when placing and removing the loads. The effect of increase in load magnitude on the mean peak IAP values was highly significant (p < 0.001) when both placing and removing the loads. It is suggested that the area of activity falls within the limits of low truncal stress. The low truncal stress limits are large enough for most loading or unloading activities. Such requirements should also apply to physical therapists using passive movements and transfer activities allowing the therapist to carry out the required treatment or transfer within the safe limits of low truncal stress. J Orthop Sports Phys Ther 1987;9(2):70-76.
本研究旨在测量在提升、放置和移除不同大小的负载时对脊柱压力的影响。八名男性志愿者利用腹内压（IAP）测量脊柱压力。在提升任务中，负载被放置在不同的垂直和水平高度，从 5 公斤到 15 公斤不等，且按照随机顺序进行。方差分析显示，在放置和移除负载时，个体差异具有显著意义（p < 0.001）。当放置和移除负载时，负载大小增加对平均峰值 IAP 值的影响具有高度显著性（p < 0.001）。因此，活动区域落在低躯干压力的限制范围内。低躯干压力限制对于大多数装卸活动来说足够大。这些要求也应适用于使用被动运动和转移活动的物理治疗师，允许治疗师在低躯干压力的安全限制范围内进行所需的治疗或转移。J Orthop Sports Phys Ther 1987;9(2):70-76.
