Bertrand A M, Bourbonnais D
Research Center, Montreal Rehabilitation Institute, School of Rehabilitation, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada.
Arch Phys Med Rehabil. 2001 Mar;82(3):403-11. doi: 10.1053/apmr.2001.19759.
To characterize postural stabilization during a progressive unilateral isometric abduction of the upper limb in a seated position in healthy subjects and subjects with hemiparesis.
Convenience sample.
University secondary care rehabilitation center.
Twelve patients with hemiparesis and 12 subjects without neurologic disorder.
Subjects were seated on a forceplate, with forearms fixed in cuffs mounted on a force transducer. Two trials per side of isometric abduction of arm were conducted. The orthogonal force and torque exerted was measured for each arm.
Forces at the upper limbs and at the seat, global motor performance, spasticity of upper limb, grip force, and dexterity.
Results of analyses of variance showed differences in the magnitude of the contralateral limb forces generated by subjects with hemiparesis and healthy subjects (p <.05). Normalized contralateral forces in the nonparetic upper limb associated with paretic isometric efforts were higher than those associated with nonparetic efforts and higher than those associated with efforts in healthy subjects.
These results suggest that postural stabilization during isometric efforts is impaired in subjects with hemiparesis.
描述健康受试者和偏瘫患者在坐位进行上肢渐进性单侧等长外展时的姿势稳定性。
便利样本。
大学二级护理康复中心。
12名偏瘫患者和12名无神经系统疾病的受试者。
受试者坐在测力板上，前臂固定在安装在力传感器上的袖带中。每侧手臂进行两次等长外展试验。测量每只手臂施加的正交力和扭矩。
上肢和座位处的力、整体运动表现、上肢痉挛、握力和灵活性。
方差分析结果显示，偏瘫患者和健康受试者产生的对侧肢体力量大小存在差异（p<.05）。与患侧等长用力相关的非患侧上肢的标准化对侧力量高于与非患侧用力相关的力量，且高于与健康受试者用力相关的力量。
这些结果表明，偏瘫患者在等长用力时的姿势稳定性受损。
