- Exercise testing: Exercise capacity is measured before and at the end of the exercise training program and at 6 month follow-up. A first exercise test with respiratory gas exchange is performed 2 weeks after hospitalization: this is the baseline exercise test. The protocol consists of 3-min warm up at a workload of 30 watts. At each stage, the workload is increased by 10 or 15 watts per min. Patients are instructed to maintain a speed of 55 to 65 rotations per min. Four exercise tests with gas analysis are programmed during cardiac rehabilitation: three maximal tests (before exercise training program to precise exercise intensity during the sessions, after training program to evaluate the primary end point and at 6 months) and one sub maximal exercise test during the tenth session to adjust the intensity of training exercises (this test is stopped when the ventilatory threshold is obtained).