1. Department of Movement, Human and Health Sciences, University of Rome ‘Foro Italico’, Roma, Italy
2. Department of Kinesiology, Iowa State University, Ames, IA, USA
3. Institute of Sport Science, University of Bern, Bern, Switzerland
4. Social and Health Care Research Center, Universidad de Castilla-La Mancha, Cuenca, Spain
5. Early Start, School of Education, University of Wollongong, Keiraville, Australia
6. CEVAS Center for Research and Evaluation, Rome, Italy