Behavioral change theories can inform the prediction of young adults' adoption of a plant-based diet.
OBJECTIVE
Drawing on the Theory of Planned Behavior (TPB) and the Transtheoretical Model (TTM), this study (1) examines links between stages of change for following a plant-based diet (PBD) and consuming more fruits and vegetables (FV); (2) tests an integrated theoretical model predicting intention to follow a PBD; and (3) identifies associated salient beliefs.


METHODS
Cross-sectional.


METHODS
Large public university in the northeastern United States.


METHODS
204 college students.


METHODS
TPB and TTM constructs were assessed using validated scales. Outcome, normative, and control beliefs were measured using open-ended questions.


METHODS
The overlap between stages of change for FV consumption and adopting a PBD was assessed using Spearman rank correlation analysis and cross-tab comparisons. The proposed model predicting adoption of a PBD was tested using structural equation modeling (SEM). Salient beliefs were coded using automatic response coding software.


RESULTS
No association was found between stages of change for FV consumption and following a PBD. Results from SEM analyses provided support for the proposed model predicting intention to follow a PBD. Gender differences in salient beliefs for following a PBD were found.


CONCLUSIONS
Results demonstrate the potential for effective theory-driven and stage-tailored public health interventions to promote PBDs.
Wyker
Brett A
BA
Department of Health Policy, Management, and Behavior, University at Albany, State University of New York, Rensselaer, NY, USA. bxw06@health.state.ny.us
Davison
Kirsten K
KK
D001521:Behavior Therapy; D003430:Cross-Sectional Studies; D014676:Diet, Vegetarian / Q000523:psychology*; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006293:Health Promotion / Q000379:methods; D006801:Humans; D033182:Intention; D008297:Male; D008960:Models, Psychological; D012727:Sex Characteristics; D055815:Young Adult