Determinants of prebiotic vegetable consumption: the extended theory of planned behaviour
(2020) Archives of Public Health — Vol. 78, p. 27 (2020)
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- Background:Prebiotic vegetables such as leek and salsify may contribute to preventing obesity by changing thecomposition of the gut microbiota. To increase consumption of prebiotic vegetables, the aim of the study was todocument the prevalence and determinants of (prebiotic) vegetable consumption.Methods:An online, correlational questionnaire was administered to participants using a mixed approach (1078online, 200 face-to-face). Participants were a representative sample (gender, age, level of education, province,population density and (un)employment) of 1278 adults of the Walloon region in Belgium. The frequency anddeterminants of prebiotic vegetable consumption were measured using an extension of the Theory of PlannedBehaviour including habits, actual control and compensatory health beliefs. Descriptive analyses were performedfollowed by hierarchic multiple regression analyses.Results:The descriptive results showed that for all categories (leek, salsify, vegetables in general) an improvementin both intentions and prevalence of the actual behaviour is necessary to experience the health benefits of(prebiotic) vegetables. Intentions and habits were important predictors of consumption for all types of vegetables,and hedonic attitudes and subjective norms were important predictors of intention. Perceived control and rationalattitudes were predictors of intention to consume only for vegetables in general. Finally, environmental factors suchas price, availability and actual control predict consumption but their influence differs depending on the vegetable.Conclusions:The findings can be used to inform interventions that aim to increase (prebiotic) vegetable consumption.Umbrella terms such as‘healthy food’or‘vegetables’do not capture the differences between the specific foods regardingthe demographic and socio-psychological determinants of their consumption. This is the first research to investigate thedeterminants of prebiotic vegetable consumption.
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Broers, V., Van den Broucke, S., & Luminet, O. (2020). Determinants of prebiotic vegetable consumption: the extended theory of planned behaviour. Archives of Public Health, 78, 27. https://doi.org/10.1186/s13690-020-00408-z (Original work published 2020)