Document Detail

The protection motivation theory within the stages of the transtheoretical model - stage-specific interplay of variables and prediction of exercise stage transitions.
MedLine Citation:
PMID:  19171082     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Two different theories of health behaviour have been chosen with the aim of theory integration: a continuous theory (protection motivation theory, PMT) and a stage model (transtheoretical model, TTM). This is the first study to test whether the stages of the TTM moderate the interrelation of PMT-variables and the mediation of motivation, as well as PMT-variables' interactions in predicting stage transitions. DESIGN: Hypotheses were tested regarding (1) mean patterns, stage pair-comparisons and nonlinear trends using ANOVAs; (2) prediction-patterns for the different stage groups employing multi-group structural equation modelling (MSEM) and nested model analyses; and (3) stage transitions using binary logistic regression analyses. METHOD: Adults (N=1,602) were assessed over a 6 month period on their physical activity stages, PMT-variables and subsequent behaviour. RESULTS: (1) Particular mean differences and nonlinear trends in all test variables were found. (2) The PMT adequately fitted the five stage groups. The MSEM revealed that covariances within threat appraisal and coping appraisal were invariant and all other constrains were stage-specific, i.e. stage was a moderator. Except for self-efficacy, motivation fully mediated the relationship between the social-cognitive variables and behaviour. (3) Predicting stage transitions with the PMT-variables underscored the importance of self-efficacy. Only when threat appraisal and coping appraisal were high, stage movement was more likely in the preparation stage. CONCLUSIONS: Results emphasize stage-specific differences of the PMT mechanisms, and hence, support the stage construct. The findings may guide further theory building and research integrating different theoretical approaches.
Sonia Lippke; Ronald C Plotnikoff
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-01-24
Journal Detail:
Title:  British journal of health psychology     Volume:  14     ISSN:  1359-107X     ISO Abbreviation:  Br J Health Psychol     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-04-08     Completed Date:  2009-07-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9605409     Medline TA:  Br J Health Psychol     Country:  England    
Other Details:
Languages:  eng     Pagination:  211-29     Citation Subset:  IM    
Health Psychology, Freie Universität Berlin, Berlin, Germany.
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MeSH Terms
Exercise / psychology*
Health Behavior*
Interviews as Topic
Logistic Models
Middle Aged
Models, Theoretical*
Psychological Theory*

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