Nordin M, Kahanovitz N, Verderame R, Parnianpour M, Yabut S, Viola K, Greenidge N, Mulvihill M
Spine (Phila Pa 1976). 1987 Mar;12(2):105-11. doi: 10.1097/00007632-198703000-00005.
The lack of trunk muscle strength and endurance has frequently been cited as a suspected factor in the etiology of low-back pain. Several investigators have suggested that asymptomatic patients have stronger trunk muscles than patients with low-back pain. People who are physically fit appear to have a decreased incidence of low-back pain. Increased trunk muscle endurance also have been observed to decrease the incidence of low-back pain. The objective evaluation of the strength and endurance of trunk musculature may, therefore, be significant. Part 1 of this study was designed to develop a reproducible strength-endurance screening procedure and to establish normal isometric-isokinetic trunk muscle strength and endurance parameters for women. This study showed that isometric trunk flexion varied from 19-109 Nm and trunk extension from 38-168 Nm. Peak values for isokinetic trunk flexion at two speeds (30 degrees per second and 60 degrees per second) varied from 17-191 Nm and isokinetic trunk extension from 14-208 Nm. The average endurance time for trunk extensors tested with the Sorensen test was 196 seconds.
躯干肌肉力量和耐力的缺乏常被认为是腰痛病因中的一个可疑因素。一些研究人员指出，无症状患者的躯干肌肉比腰痛患者更强壮。身体健康的人腰痛发病率似乎较低。增加躯干肌肉耐力也被观察到可降低腰痛发病率。因此，对躯干肌肉组织力量和耐力进行客观评估可能具有重要意义。本研究的第一部分旨在开发一种可重复的力量-耐力筛查程序，并为女性建立正常的等长-等速躯干肌肉力量和耐力参数。该研究表明，等长躯干前屈范围为19-109牛米，躯干后伸范围为38-168牛米。两种速度（每秒30度和每秒60度）下等速躯干前屈的峰值范围为17-191牛米，等速躯干后伸的峰值范围为14-208牛米。用索伦森试验测试的躯干伸肌平均耐力时间为196秒。
