Sánchez Ureña, Braulio, and Jorge Salas Cabrera. “Determination of the Maximum Oxygen Consumption of Costa rica’s First Division Football Players in Preseason 2008”. MHSalud: Revista en Ciencias del Movimiento Humano y Salud 6, no. 2 (December 31, 2009). Accessed April 14, 2024. https://www.revistas.una.ac.cr/index.php/mhsalud/article/view/5030.