title: Application of the transtheoretical model to identify psychological constructs influencing exercise behavior: a questionnaire survey.
abstract: BACKGROUND
  Current research on exercise behavior has largely been attempted to identify the relationship between psychological attributes and the initiation or adherence of exercise behavior based on psychological theories. A limited data are available on the psychological predictors of exercise behavior in public health.
  
  
  OBJECTIVE
  The present study examined the theorized association of TTM of behavior change constructs by stage of change for exercise behavior.
  
  
  METHODS
  A total of 228 college students selected from 2 universities in Seoul were surveyed. Four Korean-version questionnaires were used to identify the stage of exercise behavior and psychological attributes of adolescents. Data were analyzed by frequency analysis, MANOVA, correlation analysis, and discriminant function analysis.
  
  
  RESULTS
  Multivariate F-test indicated that behavioral and cognitive processes of change, exercise efficacy, and pros differentiated participants across the stages of exercise behavior. Furthermore, exercise behavior was significantly correlated with the TTM constructs, and that overall classification accuracy across the stages of change was 61.0%.
  
  
  CONCLUSIONS
  The present study supports the internal and external validity of the Transtheoretical Model for explaining exercise behavior. As this study highlights, dissemination must increase awareness but also influences perceptions regarding theoretically based and practically important exercise strategies for public health professionals.
authors.affiliation: Department of Sport and Leisure Studies, Seoul National University of Technology, Seoul, Korea. yk01@snut.ac.kr <yk01@snut.ac.kr>
authors.forename: Young-Ho
authors.initials: YH
authors.lastname: Kim
mesh_terms: D000293:Adolescent; D000328:Adult; D003657:Decision Making; D016002:Discriminant Analysis; D015444:Exercise / Q000523:psychology*; D005163:Factor Analysis, Statistical; D005260:Female; D015438:Health Behavior; D006293:Health Promotion; D006801:Humans; D007723:Korea; D008297:Male; D008960:Models, Psychological; D015203:Reproducibility of Results; D020377:Self Efficacy