1. Swedish Winter Sports Research Centre, Department of Health Sciences, Mid Sweden University, Sweden
2. Faculty of Sport Sciences, University of Aix-Marseille, Marseille, France
3. Centre for Elite Sports Research, Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway
4. The Swedish School of Health and Sport Sciences (GIH), Department of Physiology, Nutrition and Biomechanics, Stockholm, Sweden