偏瘫患者膝屈伸肌力等速测试的研究

The effect of isokinetic strength training on flexor and extensor muscles of the knee in hemiplegic patients

目的 探讨对偏瘫患者是否需要进行下肢肌力训练。方法 运用Cybex 60 0 0型等速肌力测试系统对3 1例病程大于 6个月和能独立行走的偏瘫患者的两侧膝关节伸肌和屈肌进行肌力测试。结果 (1)患膝屈、伸肌的峰力矩在不同的运动速度下 (60°/s ,12 0°/s ,180°/s)均较健侧明显下降 ;(2 )患膝屈、伸肌的峰力矩出现的时间与健侧相比有提前趋势 ;(3 )虽然患膝的屈肌和伸肌肌力同时下降 ,但屈肌的肌力较伸肌下降明显 ,患膝屈肌和伸肌的峰力矩比值较健侧有明显差异。结论 偏瘫患者的下肢肌力、肌耐力、爆发力明显下降 ,因此 ,应加强患侧下肢屈肌和伸肌的肌力训练 。

Objective The purpose of this study was to explore whether the lower extremity muscle strength training was beneficial to hemiplegic patients. Methods Muscle strength assessment of the flexors and extensors of the knee was performed using the isokinetic assessment equipment (Cybex 6000) in 31 patients whose illness course had been more than 6 months and who were still capable of walking independently. Results (1) In comparing with the unaffected side, the peak torque(PT)during flexion and extension of the affected knee reduced obviously at 60,120, and 180°/sec speed. (2) The period from the beginning to the peak torque was shorter in the affected knee than that of the unaffected side. (3) Although both the muscles strength of flexors and extensors were reduced in the same time, the changes were more markedly seen in the flexors. Besides, the peak torque ratio of flexion/extension of the affected knee was significantly different from that seen in the unaffected side. Conclusion The strength, tolerance, and the outbreak force of the affected knee muscles are all lower than that of the unaffected side; strength training of both the flexors and the extensors of the knee should be considered in the treatment of hemiplegic patient.