Abnormal force EMG relations in paretic limbs of hemiparetic human subjects

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148 Scopus citations


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 most 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.

Original languageEnglish (US)
Pages (from-to)690-698
Number of pages9
JournalJournal of Neurology Neurosurgery and Psychiatry
Issue number8
StatePublished - Jan 1 1981

ASJC Scopus subject areas

  • Surgery
  • Clinical Neurology
  • Psychiatry and Mental health

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