Impact of Pelvic Floor Muscle Training on Postpartum Urinary Incontinence: Dose-Response Analysis
Keywords:
Pelvic floor training, postpartum urinary incontinence, dose-response, supervised exercise, I-QOLAbstract
Introduction: Pelvic floor muscle training (PFMT) is recommended for postpartum urinary incontinence (UI), but optimal intensity, duration, and starting time are unclear.
Methods: Systematic review of randomized trials reporting PFMT protocols and UI outcomes (I-QOL score or pad test). Dose was quantified as total minutes of supervised training. Meta-regression examined dose-response.
Results: Thirty-one trials (n=5,600 women) were analyzed. PFMT significantly reduced UI prevalence at 6 months (risk ratio 0.61). Dose-response analysis showed significant effect starting at 120 total minutes; each additional 60 minutes improved I-QOL by 2.3 points up to a plateau at 360 minutes. Starting before 6 weeks postpartum was not superior to later start.
Discussion: PFMT is effective, but "more is better" only to a limit. Many trials had poor adherence. Supervised sessions are more effective than written instructions alone.
Conclusions: A minimum of 120 total supervised minutes of PFMT yields clinically meaningful reductions in postpartum UI. Doses above 360 minutes provide no additional benefit. Standardized protocols are needed.
