Sancho-Monllor , B, J L Arjol-Serrano, and P Bellosta-López , trans. 2020. “BACKGROUND OF NON-SPECIFIC GROIN INJURY AND CONCENTRIC MAXIMUM POWER VALUES IN ADOLESCENT SOCCER PLAYERS”. Cuestiones De Fisioterapia 49 (1): 37-47. https://cuestionesdefisioterapia.com/index.php/es/article/view/124.