4. Study design: Prospective study in which eligible patients with uncomplicated AMI admitted to a Coronary Care Unit will be randomized to performing a exercise training program by three months or for an untrained control group, at a 1:1 rate. All patients included after the necessary explanations and after signing the informed consent form. The patients will be submitted to the collection of material for laboratory evaluation including platelet aggregability tests, the assessment of MSNA and a CPET in 01 and 04 months of the follow-up (end of treatment).