title: Result of school-based intervention on cardiovascular risk factors.
abstract: OBJECTIVE
  To assess the effectiveness of a two-year school-based intervention, consisting of integrated and replicable physical activity and nutritional education on weight, fat percentage, cardiovascular risk factors, and blood pressure.
  
  
  METHODS
  Six elementary schools in Reykjavik were randomly assigned to be either intervention (n = 3) or control (n = 3) schools. Seven-year-old children in the second grade in these schools were invited to participate (n = 321); 268 (83%) underwent some or all of the measurements. These 286 children were followed up for two years.
  
  
  METHODS
  Children in intervention schools participated in an integrated and replicable physical activity programme, increasing to approximately 60 minutes of physical activity during school in the second year of intervention. Furthermore, they received special information about nutrition, and parents, teachers, and school food service staff were all involved in the intervention. Subjects. 321seven-year-old schoolchildren.
  
  
  METHODS
  Blood pressure, obesity, percentage of body fat, lipid profile, fasting insulin.
  
  
  RESULTS
  Children in the intervention group had a 2.3 mmHg increase in systolic blood pressure (SBP) and a 2.9 mmHg increase in diastolic blood pressure (DBP) over the two-year intervention period, while children in the control group increased SBP by 6.7 mmHg and DPB by 8.4 mmHg. These changes were not statistically significant. Furthermore there were no significant changes in percentage body fat, lipid profile, or fasting insulin between the intervention and control schools.
  
  
  CONCLUSIONS
  A two-year school-based intervention with increased physical activity and healthy diet did not have a significant effect on common cardiovascular risk factors.
authors.affiliation: Department of Family Medicine, University of Iceland , Reykjavik , Iceland.
authors.forename: Hannes
authors.initials: H
authors.lastname: Hrafnkelsson
authors.forename: Kristjan Th
authors.initials: KT
authors.lastname: Magnusson
authors.forename: Inga
authors.initials: I
authors.lastname: Thorsdottir
authors.forename: Erlingur
authors.initials: E
authors.lastname: Johannsson
authors.forename: Emil L
authors.initials: EL
authors.lastname: Sigurdsson
mesh_terms: D002318:Cardiovascular Diseases / Q000517:prevention & control*; D002648:Child; D016000:Cluster Analysis; D015331:Cohort Studies; D005260:Female; D005387:Finland / Q000453:epidemiology; D006293:Health Promotion / Q000379:methods*; D006801:Humans; D007055:Iceland; D008137:Longitudinal Studies; D008297:Male; D009043:Motor Activity; D010806:Physical Education and Training / Q000458:organization & administration; D012307:Risk Factors; D012574:Schools
keywords: Blood pressure; Iceland; children; general practice; intervention; nutrition; physical activity; school