At the day of the clamp, between 144 and 168 hours after infarction, volunteers will be randomized to one of the three situations with different glycemic and insulinemic conditions, i.e., a) high insulinemia and low glycaemia, b) high insulinemia and high glycaemia and c) low insulinemia and high glycaemia. During these experiments, endothelial vasomotor function will be recorded in four periods: i) before initiation of the procedure, ii) after 1h of the beginning, iii) 30 minutes after the second procedure and iv) 15 minutes after the simulation of ischemia/reperfusion lesion. In each time point, the investigators will collect plasma to dose inflammatory, oxidative stress and vascular activation markers.