title: Cardiovascular reactivity in adolescent boys of low socioeconomic status previously characterized as anxious, disruptive, anxious-disruptive or normal during childhood.
abstract: BACKGROUND
  The purpose of the study was to compare cardiovascular reactivity, a potential mechanism underlying the development of cardiovascular disease (CVD), in boys with different behavioral characteristics.
  
  
  METHODS
  Eighty-nine adolescent boys with low socioeconomic status who were classified as anxious, disruptive, anxious-disruptive or boys without these characteristics (i.e. control) during childhood were observed during a laboratory stress experiment.
  
  
  RESULTS
  No significant group differences were found for resting levels of diastolic or systolic blood pressure (SBP). Anxious and anxious-disruptive boys exhibited greater SBP reactivity to the social stressor (Social Competence Interview) compared to the disruptive and control boys. The disruptive boys tended to engage in compromising behaviors which are associated with health problems. The anxious boys were significantly more likely to have a positive family history of hypertension.
  
  
  CONCLUSIONS
  Boys with different behavioral problems (anxiety, disruptiveness) may be at risk for CVD via different mechanisms.
authors.affiliation: Division of Clinical Epidemiology, Montreal General Hospital, and Department of Medicine, McGill University, Montréal, Canada. mcdp@musica.mcgill.ca
authors.forename: P L
authors.initials: PL
authors.lastname: Dobkin
authors.forename: F A
authors.initials: FA
authors.lastname: Treiber
authors.forename: R E
authors.initials: RE
authors.lastname: Tremblay
mesh_terms: D000293:Adolescent; D001008:Anxiety Disorders / Q000175:diagnosis / Q000523:psychology*; D001794:Blood Pressure / Q000502:physiology*; D002648:Child; D002653:Child Behavior Disorders / Q000175:diagnosis / Q000523:psychology*; D002675:Child, Preschool; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D012959:Socioeconomic Factors