Effects of Perioperative Rehabilitation on Blood Tumor-Suppressive MicroRNA Levels and Short- and Long-Term Outcomes in Gastrointestinal Cancer. A Single-Arm Open-Label Study

Interventions: Patients scheduled for primary resection of gastrointestinal cancers will undergo preoperative rehabilitation for two weeks. During the rehabilitation stay, patients will be on a high-protein diet, medium-chain fatty acid intake, and endurance exercise at 50% to 60% of their maximum heart rate twice a day. Primary outcome(s): Evaluation of changes in blood levels of tumor suppressive miR-133b by perioperative rehabilitation intervention in gastrointestinal cancer Study Design: Single arm Non-randomized