Reid S, Hazard R G, Fenwick J W
Spine Institute of New England, Williston, Vermont.
J Spinal Disord. 1991 Mar;4(1):68-72.
The purposes of this study were to determine (a) the degree and distribution of isokinetic trunk strength deficits in people with chronic low-back pain (CLBP) and (b) to what degree subject effort during testing affects those deficits. We measured the isokinetic trunk strengths of three subject groups on the Cybex Trunk Extension/Flexion machine. Groups 1 and 2 consisted of 155 men and women with CLBP who were divided into maximal (n = 115) and submaximal (n = 40) groups according to their torque/position curve variability. Group 3 was made up of 32 back-healthy men and women who served as controls. The results demonstrated that men had higher flexion and extension torques than women did for all groups. The control group had higher flexion and extension torques than the maximal-effort CLBP group did. The extensors had a proportionally greater deficit than the flexors did in this LBP group. Comparing the two groups with CLBP, the maximal-effort group had higher flexion and extension torques than the submaximal effort group did, and the extensors showed a greater deficit. Degree of effort during testing does affect the results. Therapists should consider extensor strengthening and reeducation exercises when designing exercise programs to restore normal function in people with chronic CLBP.
(a) 慢性下腰痛（CLBP）患者等速躯干力量缺陷的程度和分布，以及 (b) 测试过程中受试者的努力程度对这些缺陷的影响程度。我们在Cybex躯干伸展/屈曲机器上测量了三组受试者的等速躯干力量。第1组和第2组由155名患有CLBP的男性和女性组成，根据他们的扭矩/位置曲线变异性分为最大努力组（n = 115）和次最大努力组（n = 40）。第3组由32名背部健康的男性和女性组成，作为对照组。结果表明，所有组中男性的屈曲和伸展扭矩均高于女性。对照组的屈曲和伸展扭矩高于最大努力的CLBP组。在这个下腰痛组中，伸肌的缺陷比例大于屈肌。比较两组CLBP患者，最大努力组的屈曲和伸展扭矩高于次最大努力组，且伸肌的缺陷更大。测试过程中的努力程度确实会影响结果。治疗师在设计运动方案以恢复慢性CLBP患者的正常功能时，应考虑加强伸肌和进行再教育训练。
