Long-Term Effects of Aortic Valve Mismatch

Inclusion Criteria: * Patient major ≤ 60 years at the time of the aortic valve replacement. * Patient affiliated with a social security * Consent dated and signed by the investigator and the subject * Subject having been informed of the results of the visit prior aortic valve replacement by mechanical prosthesis for pure aortic narrowing. * Fraction left ventricular ejection ≥ 50%, when aortic valve replacement and at the time of inclusion. * Aortic insufficiency at aortic valve replacement associated \<II / IV. * aortic valve replacement exclusive (no gestures associated: coronary bypass, enlargement of the ring, another valve surgery,…). * Coronarography normal at the aortic valve replacement. * Normal renal function. * No history of heart failure episode in the previous month inclusion. * No indication against a stress test on bicycle ergometric Exclusion Criteria: * Refusal of the patient to be included in the study. * History of cardiac surgery under extra body movement before and / or after the aortic valve replacement. * Aortic insufficiency associated with the time of the transaction\> II / IV. * Chronic respiratory insufficiency. * Track cancer or cancer evolving. * Evolutionary Osteoarthritis of the lower limbs or widespread. * Myopathy device. * Alteration higher making it impossible to carry out the test effort and response to the questionnaire on the quality of life. * Coronaropathy documented.