All participants will receive a multimodal prehabilitation program preoperatively for 4 weeks, composed of three elements: aerobic and strength training exercise program, nutritional counselling and psychological support. The exercise program will be three times per week and include a combination of home-based (twice per week) and supervised (once per week) sessions. Participants' nutritional status and dietary intake will be assessed by a registered dietician/nutritionist, and a whey protein supplement (Immunocal) will be prescribed to achieve a daily intake of 1.5 g protein/kg. Psychological support will consist of a 90-minute interview/session at baseline and weekly in-person follow-ups before surgery aimed at reducing psychological distress and improving adherence to the exercise program and nutritional recommendations. Perioperative care will follow the McGill Surgical Recovery Pathway, also called Enhanced Recovery Program, which is an evidence-based care plan set up by the Surgical Recovery (SuRe) multidisciplinary committee of the McGill University Health Centre.
