Figure 5. Leg blood flow and leg vascular conductance during baseline conditions and arterial ATP infusion with and without co-infusion of tyramine before (left) and after (right) 8 weeks of exercise training in normotensive and hypertensive individuals.

A low dose of SNP was co-infused with tyramine during baseline conditions to restore leg blood flow to baseline levels. *Different from baseline conditions, P < 0.05; §different from normotensive individuals, P < 0.05; ¤different from before training, P < 0.05.