Influence of hereditarity on arterial hypertension in post-exercise hypotension

Abstract

To verify the cardiovascular response of normotensive men with positive family history of arterial hypertension from the mother and of normotensive men with positive family history of arterial hypertension from the father after an aerobic exercise session. Were selected 35 adult men divided into groups: HF+mother (only mother with arterial hypertension, n = 14) and HF+father (only father with arterial hypertension, n = 21). The participants underwent aerobic exercise, on a cycle ergometer (Kikos^®), for 50 minutes, at intensity of 50 to 70% of the reserve heart rate (exercise session) and a control session. The variables mean arterial pressure (FinometerPro®) and forearm blood flow (Venous Occlusion Plethysmography-Hokanson^®) were continuously recorded for 10 minutes before and 30 minutes after each session. The forearm vascular resistance was calculated by dividing the mean arterial pressure by the forearm blood flow. Was considered significant p≤0.05. In the HF+mother group, mean arterial pressure and forearm vascular resistance did not change significantly in the post-moment compared to the pre-exercise moment. In contrast, in the HF+father group, mean arterial pressure and forearm vascular resistance significantly reduced in recovery from exercise. In the control session, these variables increased significantly in the post compared to the pre, in both groups. Physical exercise did not cause changes in the cardiovascular system of normotensive men, with a positive family history of hypertension from the mother. While those with a positive family history of hypertension from their father presented post-exercise hypotension, behavior partially justified by the decrease in vascular resistance in the forearm.