title: Vitamin supplement intake is related to dietary intake and physical activity: The Child and Adolescent Trial for Cardiovascular Health (CATCH).
abstract: OBJECTIVE
  To explore the relationship of multiple-vitamin supplement use with selected food groups, physical activity, lifestyle behaviors, and weight status.
  
  
  METHODS
  Two thousand seven hundred sixty-one adolescents in the 12th grade who participated in the fourth Child and Adolescent Trial for Cardiovascular Health study had height and weight measured and completed health behavior survey and food frequency questionnaires. Logistic regression models were used to determine the likelihood of supplement use with health and activity behaviors and dietary intake.
  
  
  RESULTS
  Prevalence of multiple-vitamin supplement use among adolescents was 25% and varied by sex and race/ethnicity. Supplement users had higher mean daily intakes of most food groups, but lower intakes of total fat and saturated fat than nonusers. Higher food index scores were positively associated with the likelihood of using multiple-vitamin supplements. Supplement users were more likely to be physically active, participate in team and organized sports, and less likely to be overweight and to watch more than an hour of television per day.
  
  
  CONCLUSIONS
  Adolescents who use multiple vitamin supplements have more healthful dietary and lifestyle behaviors than nonusers. Further study on supplement use by adolescents, including other types of supplements used and reasons for use, is warranted.
authors.affiliation: Division of Epidemiology and Community Health, University of Minneapolis School of Public Health, 1300 S Second St, Ste 300, Minneapolis, MN 55454, USA.
authors.forename: Lindsay
authors.initials: L
authors.lastname: Reaves
authors.forename: Lyn M
authors.initials: LM
authors.lastname: Steffen
authors.forename: Johanna T
authors.initials: JT
authors.lastname: Dwyer
authors.forename: Larry S
authors.initials: LS
authors.lastname: Webber
authors.forename: Leslie A
authors.initials: LA
authors.lastname: Lytle
authors.forename: Henry A
authors.initials: HA
authors.lastname: Feldman
authors.forename: Deanna M
authors.initials: DM
authors.lastname: Hoelscher
authors.forename: Michelle M
authors.initials: MM
authors.lastname: Zive
authors.forename: Stavroula K
authors.initials: SK
authors.lastname: Osganian
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D017195:Adolescent Nutritional Physiological Phenomena; D017677:Age Distribution; D001835:Body Weight / Q000502:physiology; D003430:Cross-Sectional Studies; D004041:Dietary Fats / Q000008:administration & dosage; D019587:Dietary Supplements / Q000706:statistics & numerical data*; D002149:Energy Intake / Q000502:physiology*; D005006:Ethnicity / Q000706:statistics & numerical data; D015444:Exercise / Q000502:physiology*; D005247:Feeding Behavior; D005260:Female; D015438:Health Behavior; D006306:Health Surveys; D006801:Humans; D008019:Life Style; D016013:Likelihood Functions; D016015:Logistic Models; D008297:Male; D015995:Prevalence; D017678:Sex Distribution; D014481:United States; D014815:Vitamins / Q000008:administration & dosage*
chemical_list: D004041:Dietary Fats; D014815:Vitamins