title: Total energy expenditure and physical activity in young Scottish children: mixed longitudinal study.
abstract: Childhood obesity has been attributed to a decline in total energy expenditure (TEE). We measured TEE, physical activity, and sedentary behaviour in a representative sample of young children from Glasgow, UK, at age 3 years (n=78), and we did a follow-up study at age 5 years (n=72). Mean physical activity level (TEE/resting energy expenditure) was 1.56 (SD 0.39) at age 3 years and 1.61 (0.22) at age 5 years. Median time in sedentary behaviour was 79% of monitored hours at age 3 years (IQR 74-84) and 76% (71-80) at age 5 years. Median time spent in moderate to vigorous physical activity represented only 2% of monitored hours at age 3 years (IQR 1-4) and 4% at age 5 years (2-6). Modern British children establish a sedentary lifestyle at an early age.
authors.affiliation: University of Glasgow Division of Developmental Medicine, Royal Hospital for Sick Children, G3 8SJ, Glasgow, UK. jjr2y@clinmed.gla.ac.uk
authors.forename: J J
authors.initials: JJ
authors.lastname: Reilly
authors.forename: D M
authors.initials: DM
authors.lastname: Jackson
authors.forename: C
authors.initials: C
authors.lastname: Montgomery
authors.forename: L A
authors.initials: LA
authors.lastname: Kelly
authors.forename: C
authors.initials: C
authors.lastname: Slater
authors.forename: S
authors.initials: S
authors.lastname: Grant
authors.forename: J Y
authors.initials: JY
authors.lastname: Paton
mesh_terms: D000367:Age Factors; D002652:Child Behavior / Q000502:physiology*; D002657:Child Development / Q000502:physiology; D002675:Child, Preschool; D004734:Energy Metabolism / Q000502:physiology*; D005260:Female; D006801:Humans; D008019:Life Style; D008137:Longitudinal Studies; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D009765:Obesity / Q000453:epidemiology / Q000517:prevention & control; D012606:Scotland; D006113:United Kingdom / Q000453:epidemiology