Fit4Surgery app: Home-based prehabilitation app for older patients undergoing elective colorectal cancer surgery.

Background: Supervised multimodal prehabilitation prior to colorectal cancer (CRC) surgery is associated with reduced complications and enhanced recovery. However, it is labor intensive and expensive. In an aging population with increasing demand and costs on healthcare and staff shortages, home-based prehabilitation (HBP) with an app could be of interest.