Cabrera Hernández, Moises Arturo, Luis Javier Tafur Tascon, Sergio Andrés García-Corzo, Hernando Arias Londoño, Alexander Quiñones Sánchez, Gina Carreño Cano, Hugo Hurtado Gutiérrez, and Carmen Ximena Tejada Rojas. 2018. “Yo-Yo Intermittent Recovery Test Level 2: Cardiorespiratory Response and Performance in Professional Soccer Players, Comparison Between under 20 and over 20 Years Old Players”. Journal of Human Sport and Exercise 13 (2proc):S351-S362. https://doi.org/10.14198/jhse.2018.13.Proc2.19.