1 Department of Food and Nutrition, and Sport Science, Center for Health and Performance, University of Gothenburg, Gothenburg, Sweden.
2 Department of Health and Rehabilitation, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
3 Norwegian Olympic and Paralympic Committee and Confederation of Sport, Oslo, Norway.
4 Department of Public Health, Sport and Nutrition, Faculty of Health and Sport Sciences, University of Agder, Kristiansand, Norway; and.
5 Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway .