Electromyographic study of the m. rectus abdominis.
D000009:Abdominal Muscles / Q000502:physiology*; D003371:Cough; D004576:Electromyography; D006801:Humans; D008297:Male; D009119:Muscle Contraction; D005082:Physical Exertion; D011187:Posture; D012119:Respiration; D013147:Spirometry