Physical fitness as a mediator between objectively measured physical activity and clustered metabolic syndrome in children and adolescents: The UP&DOWN study

1. Segura-Jiménez, V.
2. Parrilla-Moreno, F.
3. Fernández-Santos, J.R.
4. Esteban-Cornejo, I.
5. Gómez-Martínez, S.
6. Martinez-Gomez, D.
7. Marcos, A.
8. Castro-Piñero, J.