Tang A, Rymer W Z
J Neurol Neurosurg Psychiatry. 1981 Aug;44(8):690-8. doi: 10.1136/jnnp.44.8.690.
The relations between surface EMG and isometric force generated by elbow flexor muscles were compared in normal and paretic limbs of 17 hemiparetic human subjects. Similar analyses were performed on both arms of 11 normal subjects. In almost half of the hemiparetic subjects examined (8/17), the slope of the relation between elbow flexion force and surface EMG, measured over the biceps-brachialis and brachioradialis muscle groups was increased in the paretic limb. A mechanism based on anomalous reductions in mean motor unit discharge rate in paretic muscles is advanced as the most likely cause of the findings.
在17名偏瘫患者的正常肢体和患侧肢体中，比较了表面肌电图与肘屈肌产生的等长力之间的关系。对11名正常受试者的双臂进行了类似分析。在所检查的近一半偏瘫受试者（8/17）中，在肱二头肌-肱肌和肱桡肌肌群上测量的肘屈力与表面肌电图之间关系的斜率在患侧肢体中增加。提出一种基于患侧肌肉平均运动单位放电率异常降低的机制，作为这些发现最可能的原因。
