1. Division of Exercise Science and Sports Medicine, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
2. Department of Psychology, Faculty of Arts and Social Sciences, Stellenbosch University, South Africa
3. Department of Sport Management, Cape Peninsula University of Technology, Cape Town, South Africa
4. Institute of Sport and Exercise Medicine, Division of Orthopaedic Surgery, Faculty of Medicine and Health Sciences, University of Stellenbosch, Cape Town, South Africa
5. IOC Research Centre, Cape Town, South Africa