Standard care for radical prostatectomy (RP) patients includes the provision of preoperative information from a urology nurse educator. Usual care (UC) participants will be given generic instructions by the research coordinator about pelvic floor muscle exercises (PFMX), mobilization and general timeframes for a return to normal activities. The UC group will receive the same PFMX prescription as the PREHAB (Experimental) group and will receive weekly communication from the research coordinator regarding compliance with the PFMX prescription to provide an attentional-control. These instructions are provided in a healthy lifestyle booklet for men with prostate cancer.

The prehabilitation (PREHAB) program focuses on total-body physical exercises and pelvic floor muscle exercises (PFMX). The total-body exercise prescription will consist of 60 minutes of home-based, unsupervised exercise on 3-4 days per week, alternating between aerobic and resistance training. Each session will include: a 5-minute warm-up, 25 minutes of aerobic exercise, 25 minutes of resistance training (5 exercises targeting major muscle groups), and a 5-minute cool-down. Training intensity progression will occur throughout the intervention. Participants will be provided with resistance bands, a stability ball, and an exercise mat. The PFMX prescription will include a gradual increase in PFMX exercises from 60 per day during weeks 1-2, 120 per day during weeks 3-4, and 180 per day during weeks 5-6 until the surgery date. The total number of repetitions of the PFMXs will be divided equally between the rhythmic and sustained contractions.

Prior exercise trials in prostate cancer patients on hormone and/or radiation therapy have observed recruitment rates of 25-40%, but no studies have assessed recruitment to a preoperative exercise intervention among prostate cancer survivors. We will measure recruitment-success percentage and will record reasons for non-participation to better understand why men electing radical prostatectomy would not participate in an exercise intervention.

Adherence to the home-based exercise program (aerobic and resistance) and pelvic floor muscle exercises will be measured through a logbook completed by the research coordinator during weekly communication.

The same exercise logbook questions that ask about aerobic and resistance exercise, and pelvic floor muscle exercises, will be administered to both groups to assess contamination.

Retention will be assessed by measuring attrition throughout the intervention period and at each assessment.

Musculoskeletal fitness will be assessed using grip strength (hand dynamometer) and maximal upper body strength (handheld digital dynamometer). Body composition will be assessed via body mass index, waist circumference (midpoint between lowest rib and iliac crest), and body fat percentage (bioelectrical impedance analysis). Aerobic fitness is measured using the 6-Minute Walk Test.