1. School of Sport and Service Management, University of Brighton, Brighton, UK
2. Football Performance & Science Department, Aspire Academy, Doha, Qatar
3. FC Porto Youth Academy, FC Porto, Porto, Portugal
4. AFC Ajax Youth Academy, AFC Ajax, Amsterdam, Netherlands
5. Union Technical Department, Philadelphia Union, Philadelphia, PA, USA
6. School of Sport Sciences, University of Milano, Milan, Italy
7. Football Exchange, Research Institute of Sport Sciences, Liverpool John Moores University, Liverpool, UK
8. Department of Rehabilitation, Nutrition and Sport, School of Allied Health, La Trobe University, Melbourne, Australia
9. Institute of Health and Sport, Victoria University, Melbourne, Australia
10. School of Health and Social Care, Teesside University, Middlesbrough, UK
11. Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy