1. Department of Rehabilitation and Sports Medicine, 2nd Faculty of Medicine, University Hospital Motol, Charles University in Prague, Prague, Czech Republic
2. Faculty of Biomedical Engineering, Czech Technical University, Prague, Kladno, Czech Republic
3. Department of Neurology, 2nd Faculty of Medicine, University Hospital Motol, Charles University in Prague, Prague, Czech Republic
4. International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
5. FRE 3405, AGIM (AGeing, Imaging, Modeling) Laboratory, CNRS-UJF-EPHE, Faculty of Medicine, La Tronche Cédex, France