74 CHILDREN'S CARDIOVASCULAR REACTIVITY-HEART RATE RESPONSES TO PSYCHOLOGIC STRESS AND THEIR MODULATION BY RACE OF EXPERIMENTER

Our studies have shown increased systolic blood pressure(BP) reactivity to physical stress(exercise)in healthy black(B) children in comparison to healthy white(W) counterparts. We sought to determine the hemodynamic responses to another stressor, the psychologic challenge of 3 video pong games under increasingly demanding instructions. Heart rate (HR) and BP were measured in 170 healthy children(subjects). The HR delta values (maximal minus resting)were: