OBJECTIVE: Pelvic organ prolapse (POP) is a common and distressing condition. The aim of the present study was to evaluate the effect of pelvic floor muscle training (PFMT) on prevention and treatment of symptoms and signs of POP in primiparous postpartum women. STUDY DESIGN: This was a parallel group assessor blind randomized controlled trial. One hundred seventy-five primiparous postpartum women, mean age 29.8 years (standard deviation 4.1), stratified on major levator ani defects or no defect diagnosed by 3-/4-dimensional ultrasound, participated in a 4-month PFMT starting at 6 to 8 weeks' postpartum or control. All participants had thorough individual instruction and assessment of ability to perform correct pelvic floor muscle contractions. The PFMT group followed a supervised, weekly group training program and performed 3 sets of 8 to 12 daily maximal contractions at home. Main outcome was POP stage II or greater assessed by POP quantification and bladder neck position assessed by 3-/4- dimensional transperineal ultrasonography. Secondary outcome was symptoms of vaginal bulge using International Consultation on Incontinence Vaginal Symptoms questionnaire. RESULTS: Ninety-six percent of the intervention group adhered to >= 80% of both group and home training sessions. At postintervention, there was no significant risk difference in POP (rational ratio 1.62; 95% confidence interval 0.55 to 4.75), bladder neck position or symptoms of vaginal bulging. CONCLUSION: No effect was found of postpartum PFMT on POP in primiparous women. More randomized controlled trials are needed before strong conclusions can be drawn on the effect of PFMT on POP in the particular population.
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