| Affiliation: | 1. Physical Activity for Health Group, School of Psychological Sciences and Health, University of Strathclyde, Glasgow, Scotland;2. Developmental Psychology in Education Group, Moray House School of Education, the University of Edinburgh, Edinburgh, Scotland;3. Department of Mathematics and Statistics, University of Strathclyde, Glasgow, Scotland;4. Department of Management Science, University of Strathclyde, Glasgow, Scotland;5. School of Pharmacy, Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, Scotland;6. Department of Kinesiology, the University of Georgia, Athens, Georgia, USA. |
