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FOODLIT-Trial: Protocol of a Randomised Controlled Digital Intervention to Promote Food Literacy and Sustainability Behaviours in Adults Using the Health Action Process Approach and the Behaviour Change Techniques Taxonomy during the COVID-19 Pandemic

Author

Listed:
  • Raquel Rosas

    (WJCR-William James Center for Research, ISPA-Instituto Universitário, 1149-041 Lisboa, Portugal)

  • Filipa Pimenta

    (WJCR-William James Center for Research, ISPA-Instituto Universitário, 1149-041 Lisboa, Portugal)

  • Isabel Leal

    (WJCR-William James Center for Research, ISPA-Instituto Universitário, 1149-041 Lisboa, Portugal)

  • Ralf Schwarzer

    (Department of Psychology, Freie Universität Berlin, 14195 Berlin, Germany
    Department of Clinical, Health, and Rehabilitation Psychology, SWPS University of Social Sciences and Humanities, 53-238 Wroclaw, Poland)

Abstract

Dietary quality and sustainability are central matters to the international community, emphasised by the burden of the COVID-19 pandemic. To promote healthier and more sustainable food-related practices, the protocol of a web-based intervention to enhance adults’ food literacy is presented. The FOODLIT-Trial is a two-arm, parallel, experimental, and single-blinded randomised controlled trial delivered over 11 weeks. Based on the Food Literacy Wheel framework and supported by the Health Action Process Approach (HAPA) and the Behaviour Change Techniques Taxonomy, weekly content with customised behaviour change techniques (experimental group) is hypothesised to be more effective to promote food behaviour change when compared to a single-time and non-customised delivery of food-related international guidelines, with no theoretically informed approaches (comparison group). Primary outcome is food literacy, including food-related knowledge, skills, and behaviours, assessed with the FOODLIT-Tool; a secondary outcome includes psychological mechanisms that efficaciously predict change in participants’ food literacy, measured with HAPA-driven items. Enlisted through online sources, participants will be assessed across five time points (baseline, post-intervention, and 3-, 6-, and 9-month follow-ups, i.e., T0–T4). A randomisation check will be conducted, analyses will follow an intention-to-treat approach, and linear two-level models within- (T0–T4) and between-level (nested in participants) will be computed, together with a longitudinal mediation analysis. If effective, the FOODLIT-Trial will provide for a multidimensional and cost-effective intervention to enable healthier and more sustainable food practices over the long term.

Suggested Citation

  • Raquel Rosas & Filipa Pimenta & Isabel Leal & Ralf Schwarzer, 2022. "FOODLIT-Trial: Protocol of a Randomised Controlled Digital Intervention to Promote Food Literacy and Sustainability Behaviours in Adults Using the Health Action Process Approach and the Behaviour Chan," IJERPH, MDPI, vol. 19(6), pages 1-14, March.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:6:p:3529-:d:772535
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    References listed on IDEAS

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