 This protocol represent an open randomized and prospective trial, designed to answer the specific question regarding the role of the cardioprotective therapy in Duchenne Muscular Dystrophy and Becker Muscular Dystrophy patients. In this light, CMR could provide relevant data, reinforcing the scientific background, to start early particularly in BMD patients in whom this is still a debated question a cardioprotective treatment with carvedilol or ramipril.Finally,this clinical trial will clarify whether a preventive therapy may be helpful on the clinical outcome, both in reducing myocardial fibrosis and preventing the progression towards the cardiomyopathy. 