title: Effect of a two-year obesity prevention intervention on percentile changes in body mass index and academic performance in low-income elementary school children.
abstract: OBJECTIVE
  We assessed the effects of a school-based obesity prevention intervention that included dietary, curricula, and physical activity components on body mass index (BMI) percentiles and academic performance among low-income elementary school children.
  
  
  METHODS
  The study had a quasi-experimental design (4 intervention schools and 1 control school; 4588 schoolchildren; 48% Hispanic) and was conducted over a 2-year period. Data are presented for the subset of the cohort who qualified for free or reduced-price school lunches (68% Hispanic; n = 1197). Demographic and anthropometric data were collected in the fall and spring of each year, and academic data were collected at the end of each year.
  
  
  RESULTS
  Significantly more intervention than control children stayed within normal BMI percentile ranges both years (P = .02). Although not significantly so, more obese children in the intervention (4.4%) than in the control (2.5%) decreased their BMI percentiles. Overall, intervention schoolchildren had significantly higher math scores both years (P < .001). Hispanic and White intervention schoolchildren were significantly more likely to have higher math scores (P < .001). Although not significantly so, intervention schoolchildren had higher reading scores both years.
  
  
  CONCLUSIONS
  School-based interventions can improve health and academic performance among low-income schoolchildren.
authors.affiliation: Department of Medicine,University of Miami Miller School of Medicine, Miami, FL, USA. daniellehollar@gmail.com
authors.forename: Danielle
authors.initials: D
authors.lastname: Hollar
authors.forename: Sarah E
authors.initials: SE
authors.lastname: Messiah
authors.forename: Gabriela
authors.initials: G
authors.lastname: Lopez-Mitnik
authors.forename: T Lucas
authors.initials: TL
authors.lastname: Hollar
authors.forename: Marie
authors.initials: M
authors.lastname: Almon
authors.forename: Arthur S
authors.initials: AS
authors.lastname: Agatston
mesh_terms: D015992:Body Mass Index; D001835:Body Weight; D002648:Child; D003479:Curriculum; D004032:Diet; D004522:Educational Status; D005006:Ethnicity; D015444:Exercise / Q000523:psychology; D005260:Female; D005431:Florida / Q000453:epidemiology; D006801:Humans; D008297:Male; D009765:Obesity / Q000517:prevention & control* / Q000523:psychology; D010865:Pilot Projects; D011203:Poverty / Q000523:psychology / Q000706:statistics & numerical data; D012574:Schools