Estimating fat-free mass in elite youth male soccer players: cross-validation of different field methods and development of prediction equation

1. Munguía-Izquierdo, D.
2. Suárez-Arrones, L.
3. Di Salvo, V.
4. Paredes-Hernández, V.
5. Ara, I.
6. Mendez-Villanueva, A.