Jensen K, Di Fabio R P
Sports Medicine Physical Therapy Unit, University of Wisconsin Hospital and Clinics, Madison 53792.
Phys Ther. 1989 Mar;69(3):211-6. doi: 10.1093/ptj/69.3.211.
The purpose of this study was to analyze the effects of a quadriceps femoris muscle eccentric training program on strength gain in patients with patellar tendinitis. The effect of an eight-week eccentric exercise program on quadriceps femoris muscle work was evaluated in four groups of subjects--two groups of "normal" (healthy) subjects and two groups of patients with patellar tendinitis. All four groups participated in a home muscle stretching exercise program, but only two groups--one group of normal subjects (N-A) and one group of subjects with tendinitis (T-A)--received additional eccentric training on an eccentric isokinetic dynamometer. The eccentric quadriceps femoris muscle work ratio (involved limb/uninvolved limb x 100) was used to quantify strength in the N-A and T-A Groups. Pain ratings were recorded for subjects with tendinitis before and after the eight-week experiment and were correlated with the dependent variable using a Spearman rank-order correlation coefficient. The N-A Group performed significantly better than all subjects with tendinitis (p less than .05). Subjects in the T-A Group, however, showed a trend toward increasing eccentric quadriceps femoris muscle work capacity over the eight-week training period. As pain ratings in the T-A Group increased, work ratios decreased. We concluded that eccentric exercise may be an effective treatment for patellar tendinitis, but that knee pain may limit optimal gains in strength.
本研究的目的是分析股四头肌离心训练计划对髌腱炎患者力量增长的影响。在四组受试者中评估了为期八周的离心运动计划对股四头肌做功的影响，其中两组为“正常”（健康）受试者，两组为髌腱炎患者。所有四组受试者都参与了一项在家进行的肌肉拉伸运动计划，但只有两组，即一组正常受试者（N-A）和一组患有肌腱炎的受试者（T-A），在离心等动测力计上接受了额外的离心训练。使用股四头肌离心做功比率（患侧肢体/未患侧肢体×100）来量化N-A组和T-A组的力量。在为期八周的实验前后记录了肌腱炎患者的疼痛评分，并使用Spearman等级相关系数将其与因变量进行关联。N-A组的表现明显优于所有患有肌腱炎的受试者（p<0.05）。然而，T-A组的受试者在为期八周的训练期间，股四头肌离心做功能力有增加的趋势。随着T-A组疼痛评分的增加，做功比率下降。我们得出结论，离心运动可能是治疗髌腱炎的一种有效方法，但膝关节疼痛可能会限制力量的最佳增长。
