Electromyographic studies of influence of pregnancy on activity of the abdominal wall muscles. II. An analysis of the patterns of activity of the abdominal wall muscles in nullipara or primipara and multipara.
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D000009:Abdominal Muscles; D034861:Abdominal Wall / Q000502:physiology*; D004576:Electromyography; D005260:Female; D006801:Humans; D018482:Muscle, Skeletal; D011247:Pregnancy / Q000502:physiology
ABDOMINAL WALL/physiology; ELECTROMYOGRAPHY; PREGNANCY/physiology