1. Department of Circulation and Medical Imaging, Cardiac Exercise Research Group, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
2. Department of Cardiology, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
3. Centre for Research on Exercise, Physical Activity and Health, School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, Queensland, Australia
4. Department of Mathematical Sciences, Faculty of Information Technology and Electrical Engineering, Norwegian University of Science and Technology, Trondheim, Norway