title: Screen time and cardiometabolic function in Dutch 5-6 year olds: cross-sectional analysis of the ABCD-study.
abstract: BACKGROUND
  Evidence on the association between different screen behaviours and cardiometabolic biomarkers in children is limited. We examined the independent relationship of TV time and PC time with cardiometabolic biomarkers in Dutch 5-6 year old children.
  
  
  METHODS
  Cross-sectional analyses were conducted December 2012-March 2013 using data from a multi-ethnic cohort (the ABCD study, n = 1,961). TV and PC time and physical activity were assessed by parent-report. Body weight, height, waist circumference and blood pressure were measured using a standard protocol. Fasting capillary blood samples were collected. A cardiometabolic function score was computed as the mean of the inverted standardised values of waist circumference, mean of systolic and diastolic blood pressure, glucose, HDLC (not inverted), and triglycerides.
  
  
  RESULTS
  Mean TV time was 1.2 (± 0.8) hr/day and mean PC time was 0.2 (± 0.4) hr/day. After adjustment for birth weight, height, maternal education, PC time, and physical activity, excessive TV time (>2 hrs/day) was adversely associated with waist circumference (b = 0.39, 95% CI: 0.004;0.78) while PC time was beneficially associated with HDLC levels (b = 0.04, 95% CI: 0.001;0.08). We found no additional significant associations of TV time, or PC time with any of the cardiometabolic biomarkers.
  
  
  CONCLUSIONS
  We found no convincing evidence for an association between TV or PC time and cardiometabolic function in apparently healthy 5-6 yr olds.
authors.affiliation: Department of Public and Occupational Health and the EMGO Institute for Health and Care Research, VU University Medical Center, Van der Boechorststraat 7, Amsterdam 1081 BT, The Netherlands. m.chinapaw@vumc.nl.
authors.forename: Mai J M
authors.initials: MJ
authors.lastname: Chinapaw
authors.forename: Teatske M
authors.initials: TM
authors.lastname: Altenburg
authors.forename: Manon
authors.initials: M
authors.lastname: van Eijsden
authors.forename: Reinoud J B J
authors.initials: RJ
authors.lastname: Gemke
authors.forename: Tanja G M
authors.initials: TG
authors.lastname: Vrijkotte
mesh_terms: D015415:Biomarkers / Q000097:blood; D001794:Blood Pressure; D002318:Cardiovascular Diseases / Q000097:blood / Q000209:etiology; D002648:Child; D002675:Child, Preschool; D008076:Cholesterol, HDL / Q000097:blood; D003201:Computers; D003430:Cross-Sectional Studies; D015444:Exercise; D005215:Fasting; D005260:Female; D006801:Humans; D008297:Male; D008659:Metabolic Diseases / Q000097:blood / Q000209:etiology; D057185:Sedentary Behavior; D013690:Television; D014280:Triglycerides / Q000097:blood; D055105:Waist Circumference
chemical_list: D015415:Biomarkers; D008076:Cholesterol, HDL; D014280:Triglycerides