Abstract
[Purpose] The purpose of this study was to compare the effect of birth history and delivery method on vaginal pressure and abdominal muscle activity during pelvic floor muscle contraction (PFMC). [Subjects] Thirty healthy female volunteers (26∼39 years of age) were selected for the research. Their delivery histories were: nulliparous 10, vaginal delivery 10 and cesarean delivery 10. None of the participants had a history of incontinence. [Methods] Abdominal muscle activities and vaginal pressure were recorded in the crook-lying position. During pelvic floor muscle contraction. [Results] Pelvic floor muscle contractions induces significantly different vaginal pressures between subjects with nulliparous and vaginal delivery histories (p<0.05), but no significant difference in vaginal pressure was induced between the vaginal delivery group and cesarean delivery group. [Conclusion] Pelvic floor muscle contraction induced no significant differences in electromyography in each group
