A single dose of purple grape juice improves physical performance and antioxidant activity in runners: a randomized, crossover, double-blind, placebo study.
Lydiane de Lima Tavares ToscanoAlexandre Sérgio SilvaAna Carla Lima de FrançaBruno Rafael Virgínio de SousaEder Jackson Bezerra de Almeida FilhoMatheus S CostaAline Telles Biasoto MarquesDarcilene Fiuza da SilvaKlécia F SenaGilberto Dos Santos CerqueiraMaria da Conceição Rodrigues GonçalvesPublished in: European journal of nutrition (2019)
The single-dose intake of purple grape juice demonstrated an ergogenic effect in recreational runners by increasing run time to exhaustion and increasing antioxidant activity.