Quantification of peripherally induced reciprocal activation during voluntary muscle contraction

Martha Flanders, Paul Cordo

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

A new method was developed to compare patterns of coactivation and reciprocal activation of antagonistic muscles during different experimental conditions. Pure coactivation was defined as a muscle activity pattern where there was never a difference between the slope of the agonist EMG record and the slope of the antagonist EMG record. The degree of reciprocal activation was defined as being proportional to the average absolute value of the difference between these two slope values. Use of this method for the comparison of muscle activity patterns during isometric contractions and unexpected movements showed that peripheral input related to agonist unloading and antagonist stretch significantly increased reciprocal activity.

Original languageEnglish (US)
Pages (from-to)389-394
Number of pages6
JournalElectroencephalography and Clinical Neurophysiology
Volume67
Issue number5
DOIs
Publication statusPublished - 1987

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Keywords

  • Coactivation
  • Electromyography
  • Isometric contraction
  • Reciprocal activation
  • Triphasic pattern
  • Voluntary movement

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

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