Neurohormonal Parameters in Hypertrophic Cardiomyopathies

Inclusion Criteria: * \- Age 18 to 75 years * Primary (sarcomeric) hypertrophic cardiomyopathy, obstructive or non obstructive, with studies of exercise peak oxygen consumption and cardiac MRI with gadolinium late-enhancement * Informed consent * Patient with a social insurance Patient at rest * \- Age 18 to 75 years * Primary (sarcomeric) hypertrophic cardiomyopathy, obstructive or non obstructive * Informed consent * Patient with a social insurance Exclusion Criteria: * \- Insufficient echogenicity * Permanent atrial fibrillation * Complete BBB on the ECG * LVEF \< 35 % * Previous septal ablation (surgical or percutaneous) * Simultaneous participation to another biomedical research If exercise needed: * contraindication to exercise : hemodynamic instability, uncontrolled high blood pressure (\>220/120 mmHg), severe aortic stenosis * Inability to exercise (muscular, pulmonary, elderly patient)