1. Youth Physical Development Centre, Cardiff School of Sport, Cardiff Metropolitan University, Cardiff, United Kingdom;
2. Sports Performance Research Institute New Zealand (SPRINZ), AUT University, Auckland, New Zealand;
3. Strength and Power Research Group, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia;
4. Emory Sport Performance and Research Center, Flowery Branch, Georgia;
5. Emory Sports Medicine Center, Atlanta, Georgia;
6. Department of Orthopaedics, Emory University School of Medicine, Atlanta, Georgia;
7. Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia;
8. The Micheli Center for Sports Injury Prevention, Boston, Massachusetts, USA; and
9. Centre for Sport Science and Human Performance, Waikato Institute of Technology, Hamilton, New Zealand