Was Sherrington right about co-contractions?

  title={Was Sherrington right about co-contractions?},
  author={Amy E Tyler and Robert S. Hutton},
  journal={Brain research},
  volume={370 1},
Differences in electromyographic (EMG) activity between brief isometric maximum voluntary contractions under conditions of agonist contraction and agonist-antagonist co-contractions were assessed for elbow flexors (biceps brachii) and elbow extensors (triceps, long head). Expressing maximum EMG co-contraction activity as a ratio of agonist maximum EMG activity of the same muscle yielded EMG ratios consistently below 1.0 (mean = 0.48 for flexion and 0.76 for extension). Flexor EMG ratios did not… CONTINUE READING