Fig. 3.

Effect of 6 wk of single-leg knee-extensor exercise training on the change in brachial artery diameter (top) and the impact of the AO cocktail on this response after training in old subjects at rest and at 3 levels of handgrip exercise (bottom). Values for %change in brachial diameter are not exact and are displayed solely for reference purposes. It should be noted that baseline resting diameters did not differ as a consequence of exercise training. *P < 0.05, diameter changes during posttraining trial significantly increased from pretraining trial. #P < 0.05, diameter changes during posttraining AO trial significantly decreased from pretraining PL trial.