PeRioperative Study of Exercise Training in Patients With Operable Cancer of the Gastroesophageal Junction

Supervised aerobic and resistance exercise program consisting of 2 weekly sessions of approximately 60 minutes. Patients will perform a test of maximum cardio-respiratory (Watt-max test) and muscle strength (1 repetition maximum \[1-RM\] test) capacity. Using the patient's individual capacity score (Watt-max and 1RM), a personalized exercise program will be prescribed. After a light warm-up, patients will perform 20-30 min of aerobic interval training of stationary bicycle. Resistance training comprises 4 exercises for the major muscle groups: chest press, leg press, lateral pull, and knee extension with 3-4 sets of 8 to 15 repetitions. Each session will be supervised by trained instructors to ensure proper technique, and progression in training load.