Experimental design. Experimental design of the two experiments conducted in the present study. The first experiment (a) aimed to verify the effectiveness of four weeks of exercise training performed at a relative intensity at MLSS (20 m.min−1) previously identified in SHRs. The second experiment (b) aimed to verify the effect of exercise training at two distinct exercise intensities (low and high intensity) on aerobic fitness and blood pressure of SHRs. The effect of exercise intensities on aerobic fitness and systolic blood pressure (SBP) was assessed by comparing incremental tests of maximal velocity (incremental tests) and SBP in pre (t0) and post training period (t4).