title: Effect of 4 weeks of Pilates on the body composition of young girls.
abstract: BACKGROUND
  There is a need to find ways to increase the physical activity levels and improve the body composition and blood pressure of girls.
  
  
  METHODS
  Thirty 11-year-old girls were recruited from two after school programs in Houston Texas in Spring 2005. Participants from one program (16) were randomly assigned to intervention, the other (14) served as controls. BMI, BMI percentile, waist circumference and blood pressure were assessed before and after the intervention. Pilates classes were provided free of charge for an hour per day at the intervention site, 5 days a week, for 4 weeks. Four participants wore heart rate monitors during every session and completed enjoyment and perceived exertion questionnaires. Repeated measures analysis of variance with time (within) and group (between) as factors was performed.
  
  
  RESULTS
  Mean attendance was 75%, mean heart rate 104 bpm, mean perceived exertion 5.9 (1-10 scale) and enjoyment 4.4 (1-5 scale). There was a significant (P = 0.039) time by group interaction for BMI percentile. Graphs indicated that this difference was influenced by large reductions in the BMI percentile of healthy girls.
  
  
  CONCLUSIONS
  Girls enjoyed Pilates, and participation for 4 weeks lowered BMI percentile. Pilates holds promise as a means of reducing obesity.
authors.affiliation: Department of Exercise and Health Sciences, Centre for Sport, Exercise and Health, University of Bristol, Tyndall Avenue, Bristol, BS8 1TP, UK. russ.jago@gmail.com
authors.forename: Russell
authors.initials: R
authors.lastname: Jago
authors.forename: Mariëlle L
authors.initials: ML
authors.lastname: Jonker
authors.forename: Mariam
authors.initials: M
authors.lastname: Missaghian
authors.forename: Tom
authors.initials: T
authors.lastname: Baranowski
mesh_terms: D000704:Analysis of Variance; D001794:Blood Pressure / Q000502:physiology; D018660:Blood Pressure Monitoring, Ambulatory; D001823:Body Composition / Q000502:physiology*; D015992:Body Mass Index; D002648:Child; D002652:Child Behavior / Q000502:physiology*; D026241:Exercise Movement Techniques / Q000706:statistics & numerical data*; D005260:Female; D015438:Health Behavior; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D009765:Obesity / Q000517:prevention & control*; D010865:Pilot Projects; D013334:Students; D011795:Surveys and Questionnaires; D013781:Texas; D013995:Time