title: Predicting osteoporosis prevention behaviors: health beliefs and knowledge.
abstract: OBJECTIVE
  To investigate whether the expanded Health Belief Model (EHBM) could predict calcium intake and physical activity in adolescent girls.
  
  
  METHODS
  Participants self-reported calcium intake, physical activity, and osteoporosis health beliefs. Regression analysis examined the relationship between these beliefs and behaviors.
  
  
  RESULTS
  Calcium self-efficacy, calcium barriers, and osteoporosis knowledge predicted calcium intake, whereas exercise self-efficacy and health motivation predicted physical activity.
  
  
  CONCLUSIONS
  The EHBM appears to be useful in predicting osteoporosis prevention behaviors in adolescent girls. Interventions should focus on identifying barriers to calcium consumption and physical activity and increasing beliefs in the ability overcome them.
authors.affiliation: Department of Physical Education and Kinesiology, Brock University, St. Catharines, ON, Canada. kgammage@brocku.ca
authors.forename: Kimberley L
authors.initials: KL
authors.lastname: Gammage
authors.forename: Panagiota
authors.initials: P
authors.lastname: Klentrou
mesh_terms: D000293:Adolescent; D002136:Calcium, Dietary / Q000008:administration & dosage*; D015444:Exercise; D005260:Female; D015438:Health Behavior; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D009042:Motivation; D009043:Motor Activity; D010024:Osteoporosis / Q000517:prevention & control* / Q000523:psychology; D000297:Psychology, Adolescent; D012044:Regression Analysis; D020377:Self Efficacy; D057566:Self Report; D011795:Surveys and Questionnaires
chemical_list: D002136:Calcium, Dietary