Physical activity coparticipation and independent mobility as correlates of objectively measured nonschool physical activity in different school grades: The UP&DOWN study

1. Garcia-Cervantes, L.
2. D'Haese, S.
3. Izquierdo-Gomez, R.
4. Padilla-Moledo, C.
5. Fernandez-Santos, J.R.
6. Cardon, G.
7. Veiga, O.L.