1. Division of Physiological Sciences, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
2. Health through Physical Activity, Lifestyle and Sport Research Centre, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
3. Department of Public & Occupational Health and the EMGO Institute Health and Care Research, VU University, Amsterdam, Netherlands
4. Carnegie Applied Rugby Research (CARR) Centre, Carnegie School of Sport, Leeds Beckett University, Leeds, UK
5. School of Science and Technology, University of New England, Armidale, New South Wales, Australia
6. England Performance Unit, Rugby Football League, Leeds, UK
7. Exercise and Sports Science, Faculty of Science, University of Newcastle, Callaghan, Australia
8. Active Living Research Program, Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
9. Division of Sport Science, Department of Exercise, Sport and Lifestyle Medicine, Stellenbosch University, Stellenbosch, South Africa