1. The Research Initiative of Activity Studies and Occupational Therapy, Research Unit of General Practice, Department of Public Health, The University of Southern Denmark, J.B. Winsløws Vej 9a, 5000 Odense C, Denmark
2. The Research Unit for Physical Activity and Health at Work, Department of Sports Science and Clinical Biomechanics, The University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark