Carlo Capelli1,2, Jörn Rittweger3,4. 1. Department of Neurological and Movement Sciences, School of Exercise and Sport Sciences, University of Verona, Verona, Italy. carlo.capelli@nih.no. 2. Department of Physical Performances, Norwegian School of Sport Sciences, Sognsveien 220, 0806, Oslo, Norway. carlo.capelli@nih.no. 3. German Aerospace Center (DLR), Institute of Aerospace Medicine, Cologne, Germany. 4. Department of Pediatrics and Adolescent Medicine, University of Cologne, Cologne, Germany.