Trombly C A
Efroymson Neuromotor Laboratory, Sargent College of Allied Health Profressions, Boston University, MA 02215.
J Neurol Neurosurg Psychiatry. 1993 Jan;56(1):40-5. doi: 10.1136/jnnp.56.1.40.
Kinematic analysis and surface electromyography were used to study reaching by five subjects with left hemiparesis as they attempted to touch each of three targets. The targets were placed to require movement within and out of extensor synergy. Each subject was tested five times over a nine week period. Over this time, amplitude of peak velocity and sense of limb position significantly improved in the paretic arms. The increase of amplitude of peak velocity was more strongly related to a decrease in the discontinuity of movement (r = -0.48) than to maximal level of contraction of the prime movers (anterior deltoid: r = 0.25; biceps: r = 0.39). This finding may be a sign of learning or increased maturity of reach. These results, if replicated in a larger sample, would support therapy designed to improve learning of new sensorimotor relationships in the hemiparetic limb.
运动学分析和表面肌电图被用于研究五名左半身轻瘫患者在尝试触碰三个目标物时的伸手动作。目标物的放置要求动作在伸肌协同作用范围内和范围外进行。在九周的时间里，对每名受试者进行了五次测试。在此期间，患侧手臂的峰值速度幅度和肢体位置感知能力显著改善。峰值速度幅度的增加与动作不连续性的降低（r = -0.48）的相关性比与原动肌最大收缩水平（前三角肌：r = 0.25；二头肌：r = 0.39）的相关性更强。这一发现可能是学习或伸手动作成熟度增加的迹象。如果在更大的样本中得到重复验证，这些结果将支持旨在改善偏瘫肢体新感觉运动关系学习的治疗方法。
