title: Type A factors as predictors of changes in the metabolic syndrome precursors in adolescents and young adults--a 3-year follow-up study.
abstract: The predictive associations of Type A factors with changes in some essential parameters of the cluster of disorders known as metabolic syndrome (Syndrome X) were studied during a 3-year follow-up period in 1,147 randomly selected healthy adolescents and young adults. Type A behavior was measured with the Hunter Wolf A-B Rating Scale. Physiological parameters studied were serum insulin, high-density and low-density lipoprotein cholesterol, triglycerides (TG), systolic and diastolic blood pressure, body-mass index (BMI), subscapular skinfold thickness (SSF), and centrality index. Among the Type A factors in boys and men, high baseline Aggression predicted an increase in the individual parameters of metabolic syndrome (i.e., insulin, TG, SSF, and BMI) as well as a global aggravation of the cluster of metabolic parameters. In girls and women, increases in Eagerness-Energy and Responsibility across the 3 years of follow-up predicted an increase in serum insulin and a decrease in SSF, respectively.
authors.affiliation: Department of Psychology, University of Helsinki, Finland. Niklas.Ravaja@Helsinki.FI
authors.forename: N
authors.initials: N
authors.lastname: Ravaja
authors.forename: L
authors.initials: L
authors.lastname: Keltikangas-Järvinen
authors.forename: P
authors.initials: P
authors.lastname: Keskivaara
mesh_terms: D000293:Adolescent; D000328:Adult; D000374:Aggression / Q000502:physiology; D000704:Analysis of Variance; D015992:Body Mass Index; D002784:Cholesterol / Q000097:blood; D005260:Female; D005387:Finland; D005500:Follow-Up Studies; D006801:Humans; D007328:Insulin / Q000097:blood; D007333:Insulin Resistance; D008297:Male; D012044:Regression Analysis; D012307:Risk Factors; D012737:Sex Factors; D014434:Type A Personality
chemical_list: D007328:Insulin; D002784:Cholesterol