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Effects of simulated aircraft noise (noise 30 and 60 reflecting 30 or 60 playback aircraft noise events) on endothelial function (as measured by flow-mediated dilation) and (lower right) stress hormone levels of healthy volunteers (adapted from Schmidt et al.95). The administration of the antioxidant vitamin C (upper right) was associated with improved endothelial function, demonstrating a role of oxidative stress.
