1. Department of Human Movement Science, Cape Peninsula University of Technology, Wellington, South Africa
2. Sport Exercise Medicine and Lifestyle Institute (Semli), Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
3. International Olympic Committee (IOC) Research Centre, South Africa
4. Emeritus Professor, Faculty of Health Sciences, University of Cape Town Rondebosch South Africa
5. Biostatistics Unit, South African Medical Research Council, South Africa