Intended for healthcare professionals


Physical activity to prevent obesity in young children

BMJ 2006; 333 doi: (Published 30 November 2006) Cite this as: BMJ 2006;333:1171

Authors' reply

  1. John J Reilly (,
  2. James Y Paton, reader in paediatric respiratory disease1,
  3. J H McColl, reader in statistics2,
  4. A Williamson, honorary research fellow3
  1. 1Division of Developmental Medicine, University of Glasgow, Yorkhill Hospitals, Glasgow G3 8SJ
  2. 2Department of Statistics, University of Glasgow, Glasgow G12 8QQ
  3. 3Glasgow City Council Education Department, Glasgow G1 1HL

Michell asks whether our outcomes resulted from inadequate implementation of the intervention. The intervention was well implemented, but marked and sustained increases in physical activity were not observed: the intensity of physical activity sessions may have been less than achieved in the pilot study.1 Alternatively, children may have “compensated” for increased physical activity by reduced physical …

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