A comparison of two bearing-down techniques during the second stage of labor.
D000328:Adult; D001034:Apgar Score; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007746:Labor Presentation; D007748:Labor Stage, Second; D007743:Labor, Obstetric; D009035:Mothers / Q000523:psychology; D010502:Perineum / Q000293:injuries; D011187:Posture; D011247:Pregnancy; D011312:Pressure; D013997:Time Factors; D014636:Valsalva Maneuver