Pre-habilitation to Improve Outcomes in Patients Undergoing Liver Resection for Cancer

1. To determine whether a combined nutritional support program and exercise-based prehabilitation is superior to nutritional support alone in increasing functional recovery and reducing post-operative morbidity after surgery for HPB malignancy. 2. To understand which measures of immediate surgical recovery are sensitive to prehabilitation interventions and predict change in later outcome measures.