“…Kaplan et al, 2001;. Kuh y Cooper, 1992;INTRODUCTION A large body of literature has documented that regular physical activity fosters longevity, improves quality of life by reducing disease, and promotes psychological health (De Gracia & Marcó, 2000;Orepic, Mikulic, Soric, Ruzic & Markovic, 2014;Vagetti, Barbosa, Moreira, de Oliveira, Mazzardo & de Campos, 2014;Warburton, Nicol, & Bredin, 2006). Different studies have examined physical activity levels and sedentary behaviours in childhood and adolescence (Abarca-Sos, Zaragoza, Generelo & Julian, 2010;Cardon et al, 2005;Castillo & Giménez, 2011;Inchley, Currie, Todd, Akhtar, & Currie, 2005;Santos, Gomes, & Mota, 2005;Serra, Generelo y Zaragoza, 2011;Telford, Salmon, Timperio, & Crawford, 2005;Westerståhl, Barnekow Bergkvist, & Jansson, 2005).…”