Andrew Luks is a Professor at the Division of Pulmonary, Critical Care & Sleep Medicine, Harborview Medical Center, The University of Washington, Seattle, USA Phillip Ainslie is a Professor at the School of Health & Exercise Sciences and Co-Director, Centre for Heart, Lung & Vascular Health, The University of British Columbia, Okanagan, Canada Justin Lawley is a Professor at the Institute for Sports Science, University of Innsbruck, Innsbruck, Austria Robert Roach is an Associate Professor, Altitude Research Center, Division of Pulmonary Sciences & Critical Care, Anschutz Medical Campus, University of Colorado, Denver, USA Tatum Simonson is an Assistant Professor, Division of Pulmonary, Critical Care & Sleep Medicine and Co-Director, Center for Physiological Genomics of Low Oxygen, University of California, San Diego School of Medicine, USA