Organic grape juice intake improves functional capillary density and postocclusive reactive hyperemia in triathletes.

Objective: The aim of this study was to evaluate the effect of organic grape juice intake on biochemical variables and microcirculatory parameters in triathlon athletes.

Introduction: The physiological stress that is imposed by a strenuous sport, such as a triathlon, together with an insufficient amount of antioxidants in the diet may cause oxidative imbalance and endothelial dysfunction.

Methods: Ten adult male triathletes participated in this study.