A pilot randomized trial of conventional versus advanced pelvic floor exercises to treat urinary incontinence after radical prostatectomy: a study protocol

BACKGROUND: Radical prostatectomy is the most common and effective treatment for localized prostate cancer. Unfortunately, radical prostatectomy is associated with urinary incontinence and has a significant negative impact on quality of life. Pelvic floor exercises are the most common non-invasive management strategy for urinary incontinence following radical prostatectomy; however, studies provide inconsistent findings regarding their efficacy. One potential reason for sub-optimal efficacy of these interventions is the under-utilization of regional muscles that normally co-activate with the pelvic floor, such as the transverse abdominis, rectus abdominis, and the diaphragm. Two novel approaches to improve urinary continence recovery are ‘Pfilates’ and ‘Hypopressives’ that combine traditional pelvic floor exercises with the activation of additional supportive muscles. Our study will compare an advanced pelvic floor exercise training program that includes Pfilates and Hypopressives, to a conventional pelvic floor exercises regimen for the treatment of post-radical prostatectomy urinary incontinence. METHODS/DESIGN: This is a pilot, randomized controlled trial of advanced pelvic floor muscle training versus conventional pelvic floor exercises for men with localized prostate cancer undergoing radical prostatectomy. Eighty-eight men who will be undergoing radical prostatectomy at hospitals in Toronto, Canada will be recruited. Eligible participants must not have undergone androgen deprivation therapy and/or radiation therapy. Participants will be randomized 1:1 to receive 26 weeks of the advanced or conventional pelvic floor exercise programs. Each program will be progressive and have comparable exercise volume. The primary outcomes are related to feasibility for a large, adequately powered randomized controlled trial to determine efficacy for the treatment of urinary incontinence. Feasibility will be assessed via recruitment success, participant retention, outcome capture, intervention adherence, and prevalence of adverse events. Secondary outcomes of intervention efficacy include measures of pelvic floor strength, urinary incontinence, erectile function, and quality of life. Secondary outcome measures will be collected prior to surgery (baseline), and at 2, 6, 12, 26-weeks post-operatively. DISCUSSION: Pfilates and Hypopressives are novel approaches to optimizing urinary function after radical prostatectomy. This trial will provide the foundation of data for future, large-scale trials to definitively describe the effect of these advanced pelvic floor exercise modalities compared to conventional pelvic floor exercise regimes for men with prostate cancer undergoing radical prostatectomy TRIAL REGISTRATION: Clinicalstrials.gov Identifier: NCT02233608.