Effects of caffeine supplementation on physical performance and mood dimensions in elite and trained-recreational athletes - Jodra, P.; Lago-Rodriguez, A.; Sánchez-Oliver, A. J.; Lopez-Samanes, A.; Pérez-López, A.; Veiga-Herreros, P.; San Juan, A. F.; Dominguez, R. (Journal of the International Society of Sports Nutrition, 2020)