Published on in Vol 7, No 1 (2019): January

1 Department of Orthopedics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
2 Department of Physiotherapy, Martini Hospital Groningen, Groningen, The Netherlands
3 Department of Orthopedics, Martini Hospital Groningen, Groningen, The Netherlands
4 Department of Orthopedics, Medical Center Leeuwarden, Leeuwarden, The Netherlands
5 Department of Personal Health, Philips Research, Eindhoven, The Netherlands
6 University of Trento, Trento, Italy
7 Institute of Movement and Sport Gerontology, German Sport University Cologne, Cologne, Germany