1Department of Medical BioSciences, Radboud University Medical Center Reinier Postlaan 4, 6525 GC Nijmegen, the Netherlands
2Peter Harrison Centre for Disability Sport, School of Sport Exercise and Health Sciences, Loughborough University, Loughborough LE11 3TU, United Kingdom
3Institute for Biomechanics, ETH Zurich, Gloriastrasse 37/39, 8082 Zürich, Switzerland
4School of Sport and Exercise Science, University of Derby, Kedleston Rd, Derby DE22 1GB, United Kingdom
5Swiss Paraplegic Research, Guido A. Zäch Strasse 4, 6207 Nottwil, Switzerland
6Center for Human Movement Sciences, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands