Involvement of the atrial natriuretic peptide in the reduction of arterial pressure induced by swimming but not by running training in hypertensive rats

► Under resting conditions, hypertensive rats showed an increase in plasma ANP levels from chronic training. ► The swimming training similarly modified the expression of the natriuretic peptide receptor-type A and C in the kidney of SHR. ► The increase in the plasma ANP levels by swimming training decreased the degradation in the mesenteric fat tissue. ► The ANP could be involved in the reduction of blood pressure that was induced by swimming training in SHR but not by running training.