Figure 1. The effect of superimposing reactive hyperemia on the recovery from plantar flexion exercise on the peripheral arterial vasculature and O2 delivery. Blood flow (upper panel), vascular conductance (middle panel) and convective O2 delivery (lower panel) kinetics in older subjects. Area under the curve for blood flow (P < 0.01), vascular conductance (P < 0.01), and convective O2 delivery (P < 0.01) were all significantly greater in reactive hyperemia compared to free-flow conditions. Data are presented as mean ± SEM.