Stephan Brilla Sport, Exercise Medicine and Lifestyle Institute (SEMLI), Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa;b Section Sports Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South AfricaView further author information Martin Schwellnusa Sport, Exercise Medicine and Lifestyle Institute (SEMLI), Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa;c International Olympic Committee (IOC) Research Centre,...