1. Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium
2. Faculty of Psychology and Educational Sciences, Vrije Universiteit Brussel, Brussels, Belgium
3. School of Health and Welfare, Halmstad University, Halmstad, Sweden
4. Departament de Psicologia Bàsica, Evolutiva i de l’Educació, Universitat Autónoma de Barcelona, Barcelona, Spain
5. Sport Research Institute, Universitat Autónoma de Barcelona, Barcelona, Spain
6. The Swedish School of Sport and Health Sciences, Stockholm, Sweden
7. School of Human Kinetics, University of Ottawa, Ottawa, Canada