title: Rebuttal from Ulrik Wisløff, Jeff Coombes and Øivind Rognmo.
authors.affiliation: K. G. Jebsen Centre of Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway.|School of Human Movement and Nutrition Sciences, University of Queensland, St Lucia, Queensland, Australia.
authors.forename: Ulrik
authors.initials: U
authors.lastname: Wisløff
authors.affiliation: School of Human Movement and Nutrition Sciences, University of Queensland, St Lucia, Queensland, Australia.
authors.forename: Jeff S
authors.initials: JS
authors.lastname: Coombes
authors.affiliation: K. G. Jebsen Centre of Exercise in Medicine, Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway.
authors.forename: Øivind
authors.initials: Ø
authors.lastname: Rognmo