Sanmiguel-Rodríguez, Alberto, Sixto González-Víllora, and Víctor Arufe-Giráldez. 2022. “High-Performance Football in Spain: Systematic Review (2015–2019)”. Journal of Human Sport and Exercise 17 (4):942-57. https://doi.org/10.14198/jhse.2022.174.20.