Prehabilitation for bowel cancer patients undergoing surgery to improve fitness and reduce complications

INTERVENTION: 1. Patient triage medical conditions 2. Exercise program 3. Nutritional supplements 4. Smoke cessation 5. Psychological coping CONDITION: Bowel cancer, Rehabilitation, Complications ; ; PRIMARY OUTCOME: The first primary outcome is postoperative complications, as scored using the Comprehensive Complication Index score as a combined outcome measure of morbidity and mortality. The second primary/confirmatory outcome is the patients’ functional capacity, as measured by the six‐minute walk test (6MWT).; SECONDARY OUTCOME: Secondary outcomes will include indirect 1 repetition measures (1‐RM) and cardiopulmonary exercise testing (CPET), Health‐related quality of life (HRQL), Sit‐to‐Stand test, Fried Frailty Score, hand grip strength, body composition, stair climb test, Physical activity level measured through the Community Health Activities Model Program for Seniors (CHAMPS), depression and anxiety assessed by GAD‐7 and PHQ‐9, nutritional status, compliance, length of hospital stay, and costs. INCLUSION CRITERIA: Adult patients undergoing elective colorectal surgery for cancer.