FOODLIT-Trial: Digital Behaviour Change Intervention to Improve Food Literacy Amidst the COVID-19 Pandemic

Study Overview
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Brief Summary
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Given that healthy food-related habits are protective of both malnutrition and multiple noncommunicable diseases (including diabetes, heart disease, and cancer), and acknowledging that poor diets constitute a greater risk to mortality, it is essential to improve individuals' food-related knowledge, skills, and behaviours. Furthermore, the current public health context caused by the COVID-19 pandemic has reinforced the need for an adequate diet as a protective factor for one's global health. In the ambit of the FOODLIT-PRO: Food Literacy Project (ref. SFRH/BD/128528/2017), a digital intervention to promote food literacy - that is, food-related knowledge, competencies, and behaviours - encompassing behavioural change strategies and psychological determinants (such as intention, planning, and self-efficacy) was developed. With the online deliver of personalised evidence-based materials concerning food literacy, adult participants receive weekly challenges that promote their food-related knowledge (e.g., recognising food's origin and seasonality), competencies (e.g., as cooking and planning skills), and behaviours (e.g., tracking food intake, interpret nutritional labels). Matched with tailored behavioural change strategies (experimental group), both food literacy content and psychological aspects that relate to health behaviour are assessed weekly in order to evaluate the intervention's efficacy. Follow-ups at 3-, 6- and 9-months post intervention will be assessed.

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

Conditions
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Food Literacy, Food Habits, Behavior and Behavior Mechanisms, Eating Behavior

Intervention / Treatment
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* Behavioral: Experimental Group
* Behavioral: Comparison Group


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Having a minimum of digital literacy to access, visualise and download online material related to the intervention; Having the availability to participate in the intervention (11 weeks) and posterior follow-up moments.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Placebo Comparator: Single-moment, unspecified delivery of food literacy information<br>Non-specific food-related national and international guidelines were made digitally available in a website exclusively accessible to all the participants from the comparison group. | Behavioral: Comparison Group<br>* Food-related guidelines were delivered in a single moment in the first week of the intervention, on their original format and referring their original source (national's and international's entities websites). There was not a thematic for each specific week. No weekly introduction videos or WhatsApp groups existed in this condition. Food literacy domains and HAPA determinants were assessed weekly, post-intervention, and in follow-up moments 3-, 6- and 9-months after the intervention.<br>|
| Experimental: Personalised, weekly delivery of food literacy information matched with behaviour strategies<br>Food-related tips - including theoretical knowledge, practical competencies, and behaviours - from national and international guidelines were specifically matched with Behaviour Change Techniques from the BCT Taxonomy v1. These personalised material were made digitally available in a website exclusively accessible to all the participants from the experimental group. Presenting each week's topic, a small video featuring the lead psychologist was also made available each week. | Behavioral: Experimental Group<br>* Evidence-based food-related national and international guidelines were (i) specifically arranged considering the Food Literacy Wheel (Rosas et al., 2021) and personalised materials contained these guidelines were designed, (ii) matched with tailored behaviour change techniques (BCT Taxonomy v1, by Michie et al., XXXX) that indicated how to develop/implement each competence/behaviour, and (iii) digitally delivered weekly. Psychological variables of the Health Action Process Approach model (HAPA; Schwarzer, 2008) were integrated in the intervention, to study potential food literacy's psychological determinants. Weekly introduction videos featuring the lead psychologist were made available. Participants' groups in WhatsApp were built to incentive experience-sharing. Food literacy domains and HAPA determinants were assessed weekly, post-intervention, and in follow-up moments 3-, 6- and 9-months after the intervention.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in Food Literacy (FOODLIT-Tool) | Published at Appetite (Rosas Pimenta, Leal, & Schwarzer, 2022), this is a 24-item tool that assesses the perception of food literacy-related knowledge, competencies, and behaviours, according to the Food Literacy Wheel (Rosas et al., 2021). The food literacy aspects are measured through five domains: (i) origin, (ii) production and quality, (iii) select and plan, (iv) environmentally safe, and (v) cooking skills. | Measure applied at baseline, one week post-intervention, and at 3-, 6- and 9-months follow-ups in order to evaluate. | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Assessment of Health Action Process Approach Model (HAPA) Variables | All measures of the HAPA model were based on the work of Schwarzer (2008) and Godinho, Alvarez, Lima, and Schwarzer (2014). A total of 46-items assessed (i) outcome expectations, (ii) risk perception, (iii) action self-efficacy, (iv) maintenance self-efficacy, (v) recovery self-efficacy, (vi) intention, (vii) action planning, (viii) coping planning, and (ix) action control. | Measure at baseline, one week post-intervention, and at 3-, 6- and 9-months follow-ups | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Food Literacy, Behaviour Change, Sustainability, COVID-19