Voluntary muscular contraction with reference to agricultural tasks.
D000328:Adult; D000383:Agriculture; D001132:Arm / Q000502:physiology; D004576:Electromyography; D006801:Humans; D008297:Male; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology; D010807:Physical Endurance; D005082:Physical Exertion