title: [Increasing children's physical activity during school recess periods].
abstract: OBJECTIVE
  We examined whether schools' participation in the Recess Enhancement Program (REP) in the spring of 2011 was associated with higher rates of children's vigorous physical activity.
  
  
  METHODS
  In REP, a coach guides children through age-appropriate games aimed at increasing their physical activity. During recess at 25 New York City public elementary schools (15 REP, 10 non-REP), researchers visually scanned predetermined areas (n = 1339 scans), recording the number of sedentary, walking, and very active children.
  
  
  RESULTS
  Multivariate statistical analysis found that participation in REP was a significant predictor (P = .027) of the rate of vigorous physical activity (percentage very active in scan area) whose least-squares means were 41% in REP schools and 27% in non-REP schools. A significantly higher rate in REP schools persisted when the coach was not in the scan area, suggesting a change in the recess culture of REP schools.
  
  
  CONCLUSIONS
  The rate of vigorous physical activity in REP schools was 14 percentage points, or 52%, higher than the rate in non-REP schools. This low-cost intervention might be a valuable addition to the tools for combating childhood obesity and worth replicating elsewhere.
authors.affiliation: Departamento de Planificación y Asuntos Urbanos, Hunter College, City University of New York, Nueva York, Nueva York, Estados Unidos de América, john.chin@hunter.cuny.edu.
authors.forename: John J
authors.initials: JJ
authors.lastname: Chin
authors.affiliation: Asphalt Green, Nueva York, Nueva York, Estados Unidos de América.
authors.forename: David
authors.initials: D
authors.lastname: Ludwig
mesh_terms: D002648:Child; D005006:Ethnicity; D005260:Female; D006293:Health Promotion / Q000379:methods*; D006801:Humans; D008297:Male; D009043:Motor Activity; D009519:New York City; D009939:Organizations, Nonprofit; D010988:Play and Playthings; D015397:Program Evaluation; D011998:Recreation; D012574:Schools / Q000458:organization & administration*; D012959:Socioeconomic Factors; D013177:Sports; D035141:Voluntary Programs
vernacular_title: Cómo aumentar la actividad física de los niños durante el período del recreo en las escuelas.