Prehabilitation to Improve Heart Rate Variability (PRIME)

Cancer patients require chronic management and care. For those individuals living with cancer, a comprehensive approach that acknowledges the interdisciplinary nature of their condition can help guide appropriate care strategies and support their overall well-being. Approximately 45% of patients diagnosed with cancer undergo surgery to remove their tumor. Despite the advancements in surgical techniques, anesthesia, and perioperative care, major cancer surgeries still pose a significant challenge leading to a considerable decline in physiological and functional capacity. Traditionally, efforts focused on postoperative rehabilitation to enhance recovery. Recently, prehabilitation, a form of rehabilitation which aims to improve functional capacity before surgery, has gained attention for its potential benefits in improving surgical outcomes. However, prehabilitation lacks objective assessment measures to evaluate its effectiveness. Developing validated outcome measures is essential to enhance the impact of prehabilitation on surgical outcomes and long-term care for cancer patients. Heart rate variability (HRV) is a physiological parameter that measures the variation in time intervals between consecutive heartbeats, reflecting the autonomic nervous system activity which might serve as a valuable solution for objective outcome measures in evaluating the effectiveness of prehabilitation for cancer patients, providing an objective tool to assess and monitor physiological response to stress, recovery capacity, and autonomic nervous system activity. A multicenter randomized controlled trial will be conducted to assess the impact of a multimodal prehabilitation program on HRV. Patients aged 18 or older, scheduled for elective major cancer surgery will be randomized to receive either prehabilitation or standard care. The prehabilitation arm will receive a program involving home-based physical, nutritional, and psychological interventions for at least four weeks. Participants a