School of Human Sciences (Exercise and Sport Science), The University of Western Australia, Crawley, Western Australia, AUSTRALIA. The Western Australian Institute of Sport, Mt Claremont, Western Australia, AUSTRALIA. Laboratory of Human Nutrition, Department of Health Sciences and Technology, ETH Zürich, SWITZERLAND. Australian Institute of Sport, Bruce, Australian Capital Territory, AUSTRALIA. Translational Metabolic Laboratory, Radboud University Medical Centre, Nijmegen, THE NETHERLANDS. Hepcidinanalysis.com, Nijmegen, THE NETHERLANDS. Medical School, Fiona Stanley Hospital, University of Western Australia, Murdoch, Western Australia, AUSTRALIA. Harry Perkins Institute of Medical Research, Murdoch, Western Australia, AUSTRALIA. Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Queensland, AUSTRALIA. Triathlon Australia, Gold Coast, Queensland, AUSTRALIA. School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, AUSTRALIA. Medical School, Royal Perth Hospital, The University of Western Australia, Perth, Western Australia, AUSTRALIA. School of Health and Life Sciences, Federation University Australia, Ballarat, Victoria, AUSTRALIA.