Validity and reliability of the International fItness scale (IFIS) in preschool children. - Sánchez-López, Mairena; García-Hermoso, Antonio; Ortega, Francisco B.; Moliner-Urdiales, Diego; Labayen, Idoia; Castro-Piñero, Jose; Benito, Pedro J.; Vicente-Rodríguez, Germán; Sanchis-Moysi, Joaquin; Cantallops, Jaume; Artero, Enrique G.; Martínez-Vizcaíno, Vicente (European Journal of Sport Science, 2023)