Mediating variables in a Transtheoretical model dietary intervention program

This study identified mediators of a Transtheoretical Model (TTM) intervention designed to enhance fruit and vegetable consumption among economically disadvantaged African American adolescents (N = 549). Utilizing single- and multiple-mediator models, the research aimed to determine whether factors such as pros, cons, self-efficacy, and stages of change met the four necessary conclusions for establishing mediation of intervention effects on dietary behavior. The findings revealed that all four conclusions were satisfied for both stages of change and pros in the single-mediator models. In contrast, the multiple-mediator model confirmed that stages of change were a significant mediator. Specifically, stages mediated 31% of the intervention effect, and pros mediated 7% in the single-mediator models. In the multiple-mediator model, stages accounted for a substantial 72% of the intervention effect. These findings contribute to the limited existing literature on mediating variables in TTM dietary intervention programs. However, further replication studies are recommended to establish the consistency of stages of change and pros as mediators of TTM intervention program effects. [NPID: Transtheoretical Model, dietary intervention, dietary behavior, stages of change, fruit, vegetable]

Year: 2010

Reference: Di Noia, J., & Prochaska, J. O. (2010). Mediating variables in a transtheoretical model dietary intervention program. Health education & behavior: the official publication of the Society for Public Health Education, 37(5), 753–762. https://doi.org/10.1177/1090198109334897