Agonist and Antagonist Activity During Voluntary Upper-Limb Movement in Patients with Stroke

Forty-four patients with hemiplegia following stroke and 10 nondisabled subjects were studied to examine the contributions inadequate motor unit recruitment and co-contraction attributable to impaired antagonist inhibition play in the movement disorder of the hemiplegic arm. Electromyographic data were recorded from agonist and antagonist muscles while subjects attempted six specified tasks. Data from subjects who could complete the tasks were …