| Affiliation: | 2. Institute of Aerospace Medicine, Deutsches Zentrum für Luft- und Raumfahrt, DLR, Cologne, Germany;3. Institute of Training Science and Sport Informatics, German Sport University Cologne, Cologne, Germany;4. Department of Mechanical Engineering, Stanford University, Stanford, CA, USA;5. School of Mechanical Engineering, Chung-Ang University, Seoul, South Korea;11. Palo Alto VA, Bone and Joint Center, Palo Alto, California, USA;12. Medical Faculty, University of Cologne, Cologne, Germany |
