Journal Article


Applying an extended Theory of Planned Behaviour to predict breakfast consumption in adolescents

Abstract

Background/Objectives: Breakfast skipping increases during adolescence and is associated with lower levels of physical activity and weight gain. Theory-based interventions promoting breakfast consumption in adolescents report mixed findings, potentially due to limited research identifying which determinants to target. This study aimed to: (i) utilise the Theory of Planned Behaviour (TPB) to identify the relative contribution of attitudes (affective, cognitive and behavioural) to predict intention to eat breakfast and breakfast consumption in adolescents; (ii) determine whether demographic factors moderates the relationship between TPB variables, intention and behaviour. Subjects/Methods: Questionnaires were completed by 434 students (mean 14 ± 0.9 years) measuring breakfast consumption (0-2, 3-6 or 7 days), physical activity levels and TPB measures. Data were analysed by breakfast frequency and demographics using hierarchical and multinomial regression analyses. Results: Breakfast was consumed every day by 57% of students with boys more likely to eat a regular breakfast, report higher activity levels and more positive attitudes towards breakfast than girls (p<.001). The TPB predicted 58% of the variation in intentions. Overall, the model was predictive of breakfast behaviours (p<.001), but the relative contribution of TPB constructs varied depending on breakfast frequency. Interactions between gender and intentions were significant when comparing 0-2 and 3-6 day breakfast eaters only highlighting a stronger intention-behaviour relationship for girls. Conclusions: Findings confirm that the TPB is a successful model for predicting breakfast intentions and behaviours in adolescents. The potential for a direct effect of attitudes on behaviours should be considered in the implementation and design of breakfast interventions.

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Authors

Kennedy, S
Davies, E
Ryan, L
Clegg, M

Oxford Brookes departments

Faculty of Health and Life Sciences\Department of Sport and Health Sciences
Faculty of Health and Life Sciences\Department of Psychology, Social Work and Public Health

Dates

Year of publication: 2016
Date of RADAR deposit: 2016-09-22


Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License


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