Author Affiliations: Department of Public and Occupational Health (Drs Singh, van Mechelen, and Chinapaw and Mr Uijtdewilligen), EMGO Institute, and Department of Clinical Epidemiology and Biostatistics (Dr Twisk), VU University Medical Center, and Department of Methodology and Applied Biostatistics, Vrije Universiteit, Institute of Health Sciences (Dr Twisk), Amsterdam, the Netherlands.
We thank Hattie and Clinton for their response to our systematic review “Physical Activity and Performance at School: a Systematic Review of the Literature Including a Methodological Quality Assessment.”1 In this publication, we have summarized the relationship between physical activity and school performance in children, including a methodological quality assessment based on the best-evidence synthesis.
Singh AS, Uijtdewilligen L, Twisk JWR, van Mechelen W, Chinapaw MJM. Physical Activity Is Not Related to Performance at School—Reply. Arch Pediatr Adolesc Med. 2012;166(7):678-679. doi:10.1001/archpediatrics.2012.337