1. Department of Public Health and Primary Care, Ghent University, University Hospital , C. Heymanslaan 10 , Ghent B 9000, Belgium
2. Department of Health and Caring Sciences, Linnaeus University , Kalmar , Sweden
3. National Institute for Prevention and Cardiovascular Health, National University of Ireland Galway , Galway , Ireland
4. Klinikum Lippe, Bielefeld University , Detmold , Germany
5. Institute of Sport Medicine and Science , Rome , Italy
6. Julius Center for Health Sciences and Primary Care and University Medical Center Utrecht , Utrecht , the Netherlands
7. Heart Centre Hasselt and Hasselt University , Hasselt , Belgium
8. ARTORG Center for Biomedical Engineering Research, Gerontechnology & Rehabilitation, University of Bern , Bern , Switzerland