The global burden of arterial hypertension was projected to rise from 918 million adults in 2000 to 1.56 billion in 2025. 1 Hypertension is a major, modifiable risk factor for serious health conditions, such as heart failure, and cardiovascular and cerebrovascular acute events. 2 Regular physical exercise has been widely recognized as an important strategy to control blood pressure (BP) in individuals with hypertension. 3,4 The reduction in BP observed after a single session of exercise, that is post-exercise hypotension, showed a strong positive correlation with the chronic reduction in BP observed after 8 weeks of exercise training 5 ; suggesting that the acute decrease in BP may be linked to long-term adaptations to exercise. 6 The studies in older adults are scarce, and there is a lack of studies in active hypertensive individuals. In addition, controversial results have been described regarding BP response depending on the intensity of the exercise 7,8 or physical fitness status of the subjects (trained or untrained), as some studies showed no differences 9 and others showed that untrained subjects present a greater BP decrease than trained subjects. 10 Therefore, this study aims to compare the acute effects of two aerobic exercise intensities (low and moderate) on post-exercise BP in adults with high-normal BP/essential grade I hypertension and regular exercise participation. 2 | ME THODS 2.1 | Study design This is a cross-over, repeated-measures study. Each participant completed two randomly assigned experiments (aerobic exercise at 30% and 60% of the heart rate reserve (HRres). The order of the experiments was randomized using a sealed, opaque, envelope. BP was measured before and after the acute experiments, and at every hour until 3 hours post-exercise. Both experiments were conducted at the