International Olympic Committee consensus statement on the health and fitness of young people through physical activity and sport - Mountjoy, M.; Andersen, L. B.; Armstrong, N.; Biddle, S.; Boreham, C.; Brandl Bedenbeck, H. P.; Ekelund, U.; Engebretsen, L.; Hardman, K.; Hills, A.; Kahlmeier, S.; Kriemler, S.; et al. (British Journal of Sports Medicine, 2011)