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Effect of the oral AO cocktail on the change in brachial artery diameter in old subjects at rest and at 3 levels of handgrip exercise in the exercise-trained and untrained states. Values for %change in brachial diameter are not exact and are displayed solely for reference purposes (top). Shear rate in the brachial artery was calculated under these conditions (bottom). *P < 0.05, significantly different from posttraining AO condition.
