1. Department of Health Sciences, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam Public Health Research Institute , van der Boechorststraat 7, 1081 BT Amsterdam , The Netherlands
2. Human Movement and Education Division, Windesheim University of Applied Sciences , Campus 2, 8017 CA Zwolle , The Netherlands
3. Department of Healthy Society, Windesheim University of Applied Sciences , Campus 2, 8017 CA Zwolle , The Netherlands