1. Department of Physical Medicine and Nursing , University of Zaragoza, Zaragoza, Spain
2. National Research Centre for the Working Environment , Copenhagen, Denmark
3. Exercise Intervention for Health Research Group (EXINH-RG) , Department of Physiotherapy, University of Valencia, Valencia, Spain
4. Department of Social and Preventive Medicine , Centre for Public Health, Medical University of Vienna, Vienna, Austria
5. Centre for Active and Healthy Ageing , Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark