1. Centre for Human Movement Sciences, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands;
2. Department of Rehabilitation Medicine, Centre for Rehabilitation, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands;
3. Centre for Health Services and Policy Research, Queen’s University, Kingston, Canada;
4. Centre for Research on Sports in Society, Mulier Institute, Utrecht, The Netherlands;
5. School of Health and Exercise Sciences, The University of British Columbia, Kelowna, Canada