Quadriceps function. An electromyographic study under isometric conditions.
D000200:Action Potentials; D001696:Biomechanical Phenomena; D004576:Electromyography; D006801:Humans; D007717:Knee / Q000502:physiology*; D009068:Movement; D009132:Muscles / Q000502:physiology*; D011187:Posture