Diminished sympathoinhibition during the onset of low-intensity leg cycling in young Black males

It is unknown whether racial differences exist in sympathetic inhibition during the onset of dynamic exercise. We observed that the reduction in muscle sympathetic nerve activity during low-intensity leg cycling was less in young non-Hispanic Black males than in age-matched non-Hispanic White males. These findings suggest that cardiopulmonary baroreflex-mediated inhibition of sympathetic vasomotor outflow during leg cycling may be diminished in Black individuals.