Rebai H, Barra V, Laborde A, Bonny J-M, Poumarat G, Coudert J
Laboratoire de Physiologie-Biologie du Sport, Faculté de Médecine, Université d'Auvergne, Clermont-Ferrand, France.
Int J Sports Med. 2002 Nov;23(8):604-9. doi: 10.1055/s-2002-35525.
The purpose of this study was to compare the effects of two protocols of electrical stimulation combined with voluntary contractions on the recovery of thigh muscles after anterior cruciate ligament (ACL) surgery. Ten sportsmen with a mean age of 26 yrs were randomly assigned into two groups: a 80 Hz stimulated group (5 patients) and a 20 Hz stimulated group (5 patients). All patients received electrical stimulation of the quadriceps femoris, five days a week, for 12 weeks, and had a standard program of voluntary contractions. Muscle and fat volumes of the thigh were assessed using MRI before surgery and after 12 weeks of rehabilitation. Quadriceps and hamstring muscle strength were evaluated by isokinetic measurements. Twelve weeks after surgery, the quadriceps peak torque deficit in the operated limb with respect to the non operated limb at 180 degrees /s and 240 degrees /s was significantly (p < 0.05) less in the 20 Hz group than in the 80 Hz group. This difference was not confirmed when comparing the pre-surgery quadriceps peak torque of the operated limb with the post-surgery one. Subcutaneous fat volume was increased for the two groups at the post-surgery test. This increase was significantly (p < 0.05) greater for the 80 Hz group. Thigh muscle volume deficit was not significantly different between the two groups.
本研究的目的是比较两种电刺激方案结合自主收缩对前交叉韧带（ACL）手术后大腿肌肉恢复的影响。10名平均年龄为26岁的运动员被随机分为两组：80Hz刺激组（5例患者）和20Hz刺激组（5例患者）。所有患者每周接受5天的股四头肌电刺激，持续12周，并进行标准的自主收缩训练。在手术前和康复12周后，使用MRI评估大腿的肌肉和脂肪体积。通过等速测量评估股四头肌和腘绳肌的力量。术后12周，在180度/秒和240度/秒时，20Hz组患侧肢体相对于健侧肢体的股四头肌峰值扭矩 deficit显著（p<0.05）低于80Hz组。将患侧肢体术前股四头肌峰值扭矩与术后进行比较时，未证实这种差异。两组在术后测试时皮下脂肪体积均增加。80Hz组的这种增加显著（p<0.05）更大。两组之间大腿肌肉体积 deficit无显著差异。
