title: [Activities after school time and obesity in children. Influence of family and neighborhood environment].
abstract: BACKGROUND
  elementary school children spend little time at the school in Mexico. The aim was to investigate the activities after school time in children and to determine the presence of overweight and obesity.
  
  
  METHODS
  one hundred and seventy two children of both sexes were included. They belonged to the first and second grade of an official primary school from a marginalized zone. Somatometry was obtained and the type of physical practice and motifs for no practice physical activity were investigated. Descriptive statistics were applied.
  
  
  RESULTS
  the frequency of underweight was 12.1 %, overweight 19 %, and obesity 18.5 %. Sedentary activities like watching television and playing video games were the most common registered, whereas sports were the lowest physical activity practiced, especially in girls. The parents' lack of time, low family income, and the scarcity of safe spaces where children can play and practice physical activity or sports were the most related factors.
  
  
  CONCLUSIONS
  poverty and insecurity of the neighborhoods influence the outside activities in after school time. The high frequency of underweight, overweight and obesity in school children were associated to the lack of physical activity.
authors.affiliation: Departamento de Salud Pública, Universidad Nacional Autónoma de México, Distrito Federal, Mexico. liriayk@unam.mx
authors.forename: Liria T
authors.initials: LT
authors.lastname: Yamamoto-Kimura
authors.forename: Ma Guadalupe
authors.initials: MG
authors.lastname: Alvear-Galindo
authors.forename: Cristina
authors.initials: C
authors.lastname: Morán-Álvarez
authors.forename: Ma Eugenia
authors.initials: ME
authors.lastname: Acuña-Sánchez
authors.forename: Patricia V
authors.initials: PV
authors.lastname: Torres-Durán
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: Juárez-Oropeza
authors.forename: Aldo
authors.initials: A
authors.lastname: Ferreira-Hermosillo
authors.forename: Ma Guadalupe
authors.initials: MG
authors.lastname: Solís-Díaz
mesh_terms: D002648:Child; D003430:Cross-Sectional Studies; D005191:Family Characteristics; D005260:Female; D006801:Humans; D007899:Leisure Activities; D008297:Male; D009765:Obesity / Q000453:epidemiology*; D012111:Residence Characteristics
keywords: actividades recreativas; estilo de vida sedentario; leisure activities; niños, obesidad; obesity in children; overweight; sedentary lifestyle; sobrepeso