Pelvic floor muscle (PFM) training is the first-line treatment for women of all ages with urinary incontinence (UI), but evidence supporting its effects on the functional anatomy of the pelvic floor is scarce in older women. We aimed to evaluate the long-term (one-year) effects of PFM training on the shape of the levator hiatus (LH) in older women with UI and its association with PFM force, incontinence severity, and potential effect modifiers (age, UI severity, BMI, and UI type). This is a secondary analysis of the GROUP study, a non-inferiority RCT assessing the effects of a structured and progressive 12-week PFM training program to treat UI in older women. Data were available from 264/308 participants at the one-year follow-up. PFM training resulted in reduced LH size toward a more "circular" shape, which was consistently associated with greater PFM force and reduced UI severity. Further, no significant interactions were found between LH shape changes and any of the potential effect modifiers, suggesting that women will potentially benefit from PFM training, regardless of age, UI severity, BMI, and UI type (stress or mixed), with changes that can be observed in the functional anatomy of the pelvic floor and sustained in the long-term.
International journal of environmental research and public health. 2022 Sep 04*** epublish ***
Licia P Cacciari, Mélanie Morin, Marie-Hélène Mayrand, Chantale Dumoulin
School of Rehabilitation, Faculty of Medicine, Université de Montréal and Research Center of the Institut Universitaire de Gériatrie de Montréal, Montreal, QC H3W 1W5, Canada., School of Rehabilitation, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Research Center of the Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada., Departments of Obstetrics and Gynecology and Social and Preventive Medicine, Université de Montréal, Research Center of the Centre Hospitalier de l'Université de Montréal, Montreal, QC H3C 3J7, Canada.