Respiratory Society (ERS) and, by invitation, the European College of Sports Science. Susan A. Ward is immediate past Editor-in-Chief of the European Journal of Applied Physiology. She previously served as Chair of the Pulmonary Circulation, Gas Exchange and Exercise Group of the ERS. She is a consultant for Xtreme Everest 2 (www.xtreme-everest.co.uk), a collaborative venture between Duke University (Durham, NC, USA) and the University of Southampton (Southampton, UK) and University College London (London, UK). https://doi.org/10.1183/2312508X.10017818 ix