1. Faculty of Education and Sport, University of Deusto, 48007 Bilbao, Spain
2. Faculty of Education and Sport, University of Basque Country (UPV/EHU), 01007 Vitoria, Spain
3. Faculty of Kinesiology, University of Zagreb, 10000 Zagreb, Croatia
4. Medical Services, Athletic Club, 48196 Lezama, Spain
5. Faculty of Physical Activity and Sport Sciences-INEF, Universidad Politécnica de Madrid, 28040 Madrid, Spain
6. Faculty of Social Sciences and Humanities, University of Deusto, 48007 Bilbao, Spain