Discipline of Exercise and Sport Science, Sydney School of Health Sciences, Sydney University, Australia; Boden Collaboration for Obesity, Nutrition, Exercise and Eating Disorders, Sydney University, Australia. Electronic address: nathan.johnson@sydney.edu.au. Discipline of Exercise and Sport Science, Sydney School of Health Sciences, Sydney University, Australia; Boden Collaboration for Obesity, Nutrition, Exercise and Eating Disorders, Sydney University, Australia. School of Human Movement and Nutrition Sciences, University of Queensland, Australia. Prevention Research Collaboration, School of Public Health, Sydney University, Australia. Boden Collaboration for Obesity, Nutrition, Exercise and Eating Disorders, Sydney University, Australia.