Figure 4.
VE training increased the circulating and myocardial levels of NO metabolites. Levels of nitrite, nitrate, and nitrosothiols (RXNO and RSNO) were measured in the (A–C) plasma and (D–F) heart following 4 weeks of VE training. (G) Mice deficient in eNOS (eNOS−/−) were subjected to 4 weeks of VE training and then to 45 min of left coronary artery occlusion followed by reperfusion. Myocardial AAR/LV, INF/AAR, and INF/LV were then evaluated at 24 hours of reperfusion. Steady-state levels of plasma (H) nitrite, nitrate, and (I) nitrosothiol levels in individuals who exercised for at least 45 minutes a day, 3 times a week for at least 2 years (trained endurance athletes) and from non-trained individuals. Values are means ± S.E.M. *p<0.05, **p<0.01, and ***p<0.001 vs. SED.