title: The effect of a classroom activity break on physical activity levels and adiposity in primary school children.
abstract: OBJECTIVE
  Despite recognition that regular physical activity is essential for good health, many children do not accumulate sufficient daily physical activity. The aim of this study was to examine the effect of a classroom-based activity break on accelerometer-determined moderate-to-vigorous intensity physical activity (MVPA) and adiposity in primary school children.
  
  
  METHODS
  One hundred twenty children from seven primary schools in Northern Ireland participated in the study. In each school, one class of children was randomly assigned to an intervention group and another class to a control group. Teachers of the intervention classes led a 5-min activity break three times per day for 12 weeks. Accelerometer-determined MVPA, height, weight and four skinfolds were measured at baseline and post-intervention.
  
  
  RESULTS
  Compared with the control group, the intervention group significantly increased weekday MVPA (+9.5 min) from baseline to post-intervention. There were no significant changes in BMI; however, an increase in sum-of-skinfolds of the intervention group was observed.
  
  
  CONCLUSIONS
  Classroom-based activity breaks led by the teacher are successful in increasing children's physical activity levels. The programme shows a positive step in improving overall physical activity levels and contributing to the goal of 60 min daily MVPA.
authors.affiliation: Sport and Exercise Science Research Institute, University of Ulster, Belfast, United Kingdom.
authors.forename: Clare
authors.initials: C
authors.lastname: Drummy
authors.affiliation: Department of Arts Education and Physical Education, Mary Immaculate College, University of Limerick, Limerick, Ireland.
authors.forename: Elaine M
authors.initials: EM
authors.lastname: Murtagh
authors.affiliation: Department of Health and Physical Education, Stranmillis University College, Belfast, United Kingdom.
authors.forename: David P
authors.initials: DP
authors.lastname: McKee
authors.affiliation: Sport and Exercise Science Research Institute, University of Ulster, Belfast, United Kingdom.
authors.forename: Gavin
authors.initials: G
authors.lastname: Breslin
authors.affiliation: Sport and Exercise Science Research Institute, University of Ulster, Belfast, United Kingdom.
authors.forename: Gareth W
authors.initials: GW
authors.lastname: Davison
authors.affiliation: Sport and Exercise Science Research Institute, University of Ulster, Belfast, United Kingdom.
authors.forename: Marie H
authors.initials: MH
authors.lastname: Murphy
mesh_terms: D050154:Adiposity; D002648:Child; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009660:Northern Ireland; D012574:Schools
keywords: children; intervention; physical activity; school