title: Vectorelectromyographic investigations at high muscle activity.
mesh_terms: D000293:Adolescent; D000328:Adult; D004562:Electrocardiography / Q000379:methods*; D004566:Electrodes; D004576:Electromyography / Q000295:instrumentation; D006801:Humans; D008875:Middle Aged; D009132:Muscles / Q000502:physiology*