Delitto A, Rose S J, McKowen J M, Lehman R C, Thomas J A, Shively R A
Program in Physical Therapy, Washington University Medical School, St. Louis, MO.
Phys Ther. 1988 May;68(5):660-3. doi: 10.1093/ptj/68.5.660.
Twenty patients who had undergone anterior cruciate ligament reconstructive surgery were placed randomly and independently in an Electrical Stimulation Group (n = 10) or Voluntary Exercise Group (n = 10) to compare the effectiveness of these two muscle-strengthening protocols. Patients in both groups used simultaneous contraction of quadriceps femoris and hamstring muscles during a training regimen that consisted of either voluntary exercise or electrical stimulation trials five days a week for a three-week period within the first six postoperative weeks. After patients completed the training regimen, bilateral maximal isometric measurements of gravity-corrected knee extension and flexion torque were obtained for both groups and percentages were calculated. Results showed that patients in the Electrical Stimulation Group finished the three-week training regimen with higher percentages of both extension and flexion torque when compared with patients in the Voluntary Exercise Group (extension: t = 4.35, p less than .05; flexion; t = 6.64, p less than .05). These results indicate that patients in an electrical stimulation regimen can achieve higher individual thigh musculature strength gains than patients in a voluntary exercise regimen when simultaneous contraction of thigh muscles is prescribed during an early phase of postoperative rehabilitation.
二十名接受了前交叉韧带重建手术的患者被随机且独立地分为电刺激组（n = 10）或自主运动组（n = 10），以比较这两种肌肉强化方案的效果。两组患者在术后前六周内，每周五天，持续三周的训练方案中，均采用股四头肌和腘绳肌同时收缩的方式，训练方案包括自主运动或电刺激试验。在患者完成训练方案后，两组均进行了双侧重力校正后的膝关节伸展和屈曲扭矩的最大等长测量，并计算了百分比。结果显示，与自主运动组患者相比，电刺激组患者在完成三周训练方案后，伸展和屈曲扭矩的百分比更高（伸展：t = 4.35，p < 0.05；屈曲：t = 6.64，p < 0.05）。这些结果表明，在术后康复早期阶段，当规定大腿肌肉同时收缩时，接受电刺激方案的患者比接受自主运动方案的患者能获得更高的个体大腿肌肉力量增长。
