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Results suggest that the fitness levels among black women show complex associations with blood pressure and hemodynamic responses during and following passive and active stressors. Data also indicate that parental history of hypertension influence the outcome of such studies.

Research shows that After an acute exercise bout blood pressure decreases as a response to stress, which in turn leads to a decrease in sympathetic drive reflected in reduced plasma norepinephrine and elongaion of preejecion peiod. These reduced hemodynamic responses due to stress result in increases in cardiac and vascular beta-adrenergic receptor responsivity.

The potential use of exercise within lower-body negative pressure (LBNP) to prevent the effects of bed rest, an analog of spaceflight, is evaluated. The hypothesis that adding an orthostatic stress during exercise would maintain orthostatic function after bed rest is tested.