title: [Pilot study about the effectivity of an intervention based on games in nutritional status and muscle strength on children].
abstract: BACKGROUND
  The overnutrition is a constant on developing countries; Chile is not an exception because it has a marked tendency to overweight and obesity in schoolchildren. The muscular strength has been associated with cardiovascular and metabolic health status in scholars. Effective interventions using games are needed to improve the nutritional status and physical fitness in school children.
  
  
  OBJECTIVE
  To assess the intervention effectiveness based on games played at school time to improve the nutritional status and physical fitness in schoolchildren.
  
  
  METHODS
  156 students aged between 7 to 15 years, attending to two public schools with full school day, to which a pilot program was applied. This pilot program was based on dynamic recreational games during 45 minutes from monday to friday for 3 months in the largest playtime of the school day.
  
  
  RESULTS
  At the end of the intervention, we observed a significant modification on children nutritional status, which highlights an increase in the number of children that reached the normal nutritional status (p < 0.001). We also observed a significant number of obese children who reached overweight nutritional status (p < 0.001). We also observed a decrease of leg muscular strength at the end of the study.
  
  
  CONCLUSIONS
  We found a positive effect of a program based on dynamic recreational games in the largest school playtime, improving nutritional status. However, we didn't observed modifications in the muscular strength.
authors.affiliation: Laboratorio de Ciencias de la Actividad Física. Programa de Fisiología. Instituto de Ciencias Biomédicas. Facultad de Medicina. Universidad de Chile. Chile. Facultad de Ciencias de la Actividad Física. Universidad de Playa Ancha. Chile. Facultad de Salud. Deporte y Recreación. Universidad Bernardo O'Higgins. Chile.. johanasoto@ug.uchile.cl.
authors.forename: Johana Patricia
authors.initials: JP
authors.lastname: Soto-Sánchez
authors.affiliation: Laboratorio de Ciencias de la Actividad Física. Programa de Fisiología. Instituto de Ciencias Biomédicas. Facultad de Medicina. Universidad de Chile. Chile..
authors.forename: Nicolás Fernando
authors.initials: NF
authors.lastname: Pavez Saldiviar
authors.affiliation: Laboratorio de Ciencias de la Actividad Física. Programa de Fisiología. Instituto de Ciencias Biomédicas. Facultad de Medicina. Universidad de Chile. Chile..
authors.forename: Javier Ignacio
authors.initials: JI
authors.lastname: Bravo-Gatica
authors.affiliation: Laboratorio de Ciencias de la Actividad Física. Programa de Fisiología. Instituto de Ciencias Biomédicas. Facultad de Medicina. Universidad de Chile. Chile..
authors.forename: Alan Rigoberto
authors.initials: AR
authors.lastname: White Ortiz
authors.affiliation: Laboratorio de Ciencias de la Actividad Física. Programa de Fisiología. Instituto de Ciencias Biomédicas. Facultad de Medicina. Universidad de Chile. Chile..
authors.forename: Francisco Ignacio
authors.initials: FI
authors.lastname: Jaque Fernández
authors.affiliation: Laboratorio de Ciencias de la Actividad Física. Programa de Fisiología. Instituto de Ciencias Biomédicas. Facultad de Medicina. Universidad de Chile. Chile..
authors.forename: Cristian Ignacio
authors.initials: CI
authors.lastname: Vargas-Gyllen
authors.affiliation: Laboratorio de Ciencias de la Actividad Física. Programa de Fisiología. Instituto de Ciencias Biomédicas. Facultad de Medicina. Universidad de Chile. Chile..
authors.forename: Sandra
authors.initials: S
authors.lastname: Arriagada Cárdenas
authors.affiliation: Departamento de Nutrición. Facultad de Medicina. Universidad de Chile..
authors.forename: Fernando
authors.initials: F
authors.lastname: Carrasco Naranjo
authors.affiliation: Laboratorio de Ciencias de la Actividad Física. Programa de Fisiología. Instituto de Ciencias Biomédicas. Facultad de Medicina. Universidad de Chile. Chile.Escuela de Kinesiología. Facultad de Medicina. Universidad de Chile. Chile..
authors.forename: Marcelo Antonio
authors.initials: MA
authors.lastname: Cano-Cappellacci
mesh_terms: D000293:Adolescent; D002648:Child; D015444:Exercise; D005260:Female; D000068957:Games, Recreational; D006801:Humans; D008297:Male; D053580:Muscle Strength; D009752:Nutritional Status; D009765:Obesity / Q000628:therapy; D050177:Overweight / Q000628:therapy; D010809:Physical Fitness; D010865:Pilot Projects; D012574:Schools; D016896:Treatment Outcome