Tanaka S, Hachisuka K, Ogata H
Department of Rehabilitation Medicine, Yokohama Rosai Hospital, Kanagawa, Japan.
Am J Phys Med Rehabil. 1998 Jul-Aug;77(4):288-90. doi: 10.1097/00002060-199807000-00005.
This study was undertaken to determine muscle strength of trunk flexion-extension in hemiplegic patients after stroke compared with that of normal controls. The design consisted of a nonrandomized control trial in a secondary care setting (a rehabilitation unit at a hospital facility). The subjects included 25 post-stroke male hemiplegic patients and 25 male healthy controls. The maximal peak torques of trunk flexion-extension at angular velocities of 0 degrees (isometric contraction), 60 degrees, 120 degrees, and 150 degrees/s were measured by using an isokinetic dynamometer (Cybex Trunk Extension-Flexion Unit, Cybex, Ronkonkoma, NY). Peak torque of trunk flexion and extension in hemiplegic patients was significantly smaller than that of healthy controls (P < 0.05), except isometric trunk flexion (P > 0.05). The weakness of trunk flexion-extension muscles in hemiplegic patients might be accounted for by the bilateral innervation from the motor cortex, the insufficient use of high threshold motor units, and disuse atrophy.
本研究旨在确定中风后偏瘫患者躯干屈伸肌力量，并与正常对照组进行比较。研究设计为二级医疗机构（医院康复科）的非随机对照试验。受试者包括25名中风后男性偏瘫患者和25名男性健康对照者。使用等速测力计（Cybex躯干屈伸单元，Cybex，Ronkonkoma，纽约）测量在0度（等长收缩）、60度、120度和150度/秒角速度下躯干屈伸的最大峰值扭矩。偏瘫患者躯干屈伸的峰值扭矩显著小于健康对照组（P<0.05），等长躯干屈曲除外（P>0.05）。偏瘫患者躯干屈伸肌的无力可能是由运动皮层的双侧神经支配、高阈值运动单位使用不足以及废用性萎缩所致。
