title: High blood pressure and sedentary behavior in adolescents are associated even after controlling for confounding factors.
abstract: OBJECTIVE
  The aim of this study was to determine whether high blood pressure (HBP) is associated with sedentary behavior in young people even after controlling for potential confounders (gender, age, socioeconomic level, tobacco, alcohol, obesity and physical activity).
  
  
  METHODS
  In this epidemiological study, 1231 adolescents were evaluated. Blood pressure was measured with an oscillometric device and waist circumference with an inextensible tape. Sedentary behavior (watching television, computer use and playing video games) and physical activity were assessed by a questionnaire. We used mean and standard deviation to describe the statistical analysis, and the association between HBP and sedentary behavior was assessed by the chi-squared test. Binary logistic regression was used to observe the magnitude of association and cluster analyses (sedentary behavior and abdominal obesity; sedentary behavior and physical inactivity).
  
  
  RESULTS
  HBP was associated with sedentary behaviors [odds ratio (OR) = 2.21, 95% confidence interval (CI) = 1.41-3.96], even after controlling for various confounders (OR = 1.68, CI = 1.03-2.75). In cluster analysis the combination of sedentary behavior and elevated abdominal obesity contributed significantly to an increased likelihood of having HBP (OR = 13.51, CI 7.21-23.97).
  
  
  CONCLUSIONS
  Sedentary behavior was associated with HBP, and excess fat in the abdominal region contributed to the modulation of this association.
authors.affiliation: Department of Physical Education, UNESP Universidade Estadual Paulista, Presidente Prudente , São Paulo , Brazil.
authors.forename: Diego Giulliano Destro
authors.initials: DG
authors.lastname: Christofaro
authors.forename: Selma Maffei
authors.initials: SM
authors.lastname: De Andrade
authors.forename: Jefferson Rosa
authors.initials: JR
authors.lastname: Cardoso
authors.forename: Arthur Eumann
authors.initials: AE
authors.lastname: Mesas
authors.forename: Jamile Sanches
authors.initials: JS
authors.lastname: Codogno
authors.forename: Rômulo Araújo
authors.initials: RA
authors.lastname: Fernandes
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001938:Brazil / Q000453:epidemiology; D005260:Female; D006801:Humans; D006973:Hypertension / Q000453:epidemiology*; D008297:Male; D009043:Motor Activity; D009765:Obesity / Q000453:epidemiology; D056128:Obesity, Abdominal / Q000453:epidemiology*; D012307:Risk Factors; D057185:Sedentary Behavior; D012737:Sex Factors; D012959:Socioeconomic Factors; D000066608:Underage Drinking
keywords: Abdominal obesity; adolescents; high blood pressure; physical activity; sedentary behaviors