Levene J A, Seeds R H, Goldberg H M, Frazier M, Fuhrman G A
Milwaukee Industrial Clinics, S.C., Wisconsin 53233.
J Spinal Disord. 1989 Mar;2(1):20-35.
A total of 200 men and 100 women with no prior history of low back pain were evaluated by a series of 6 different tests on the Isostation B200 (Isotechnologies, Hillsborough, NC, U.S.A.) to obtain normative data on the functional performance of the low back. The data collected in this descriptive study were analyzed for significant patterns and differences between an asymptomatic male and female population. In the range of motion test, male subjects demonstrated greater range of motion in all planes; however, values for women showed greater standard deviations. In the maximum isometric test, male torque values exceeded female values, but male values showed greater standard deviations. A rank order of parameter values was made from values recorded during repetitive tests for both men and women. Coupling patterns observed during single-plane repetitive tests allowed secondary and tertiary axes to be identified. Torque values generated over the set resistance were calculated for the repetitive tests conducted in three different planes. A positive curvilinear, concave downward relationship was observed when these values were plotted against the predetermined resistance settings. Future research will study the effect resistance settings on maximum torque output and the role of velocity as a key discriminator between normal and abnormal populations.
共有200名男性和100名女性参与了此次研究，这些人之前均无腰痛病史。他们通过在Isostation B200（美国北卡罗来纳州希尔斯伯勒市的Isotechnologies公司生产）上进行的一系列6种不同测试，以获取有关下背部功能表现的标准数据。对这项描述性研究中收集的数据进行分析，以找出无症状男性和女性人群之间的显著模式和差异。在活动度测试中，男性受试者在所有平面上的活动度都更大；然而，女性的数据标准差更大。在最大等长测试中，男性的扭矩值超过女性，但男性的值标准差也更大。根据男性和女性在重复测试中记录的值，对参数值进行了排序。在单平面重复测试中观察到的耦合模式有助于识别次轴和第三轴。针对在三个不同平面上进行的重复测试，计算了在设定阻力下产生的扭矩值。当将这些值与预定阻力设置作图时，观察到呈正的向下凹的曲线关系。未来的研究将探讨阻力设置对最大扭矩输出的影响，以及速度作为正常人群和异常人群之间关键区分因素的作用。
