Dietary BehaviorsNCT07385820
A Comparative Intervention Study on Strategies for Fruit Distribution and Awareness Campaigns in Schools
A study testing Fruit Stand Availability and Awareness Campaign in people with Dietary Behaviors and Fruit Consumption, run by Karolinska Institutet at 2 sites in Sweden.
Trial summary
This implementation study evaluates two strategies to increase fruit consumption among Swedish students. (1) installing fruit stands in schools and (2) combining fruit stands with a health-awareness campaign. Read more about this study
- Who is it for?
- Ages 7 to 19 yearsHealthy volunteers can take part
- Conditions the study is for
- Dietary Behaviors, Fruit Consumption, Dietary Habits
- What is being tested?
- Fruit Stand Availability and Awareness Campaign
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 300 participants
- Where
- 2 sitesSweden
- Study dates
- 12 Jan 2026to 31 Dec 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 7 to 19 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- Students enrolled in a Swedish school (elementary, middle, or high school)
- Ages 7-19 years
- Able to use a mobile phone to document meals and snacks
- Provided informed consent (with parental consent required for participants under 15 years old)
Who cannot join
- Presence of any clinically significant disease or condition that, in the opinion of the research team, may interfere with participation or influence study outcomes
Trial locations and contacts
2 sites in 1 country. Contact the study team or a site near you to ask about taking part.
Sweden2 sites, 2 recruiting
- Recruiting
Internationella Engelska Gymnasiet Södermalm
Stockholm, 118 58
Maria Fernanda Roca Rubio, PhD, +46793599172, fernanda.roca@ki.se
- Recruiting
Blackebergs gymnasium
Stockholm, 168 48
Maria Fernanda Roca Rubio, PhD, +46793599172, fernanda.roca@ki.se
About this study
Official title: An Interventional Study Evaluating Two Different School Deployment Strategies, Testing the Effects of Onsite Awareness Raising on the Adoption of the Fruit-stands by Local Student Populations
This implementation study evaluates two strategies to increase fruit consumption among Swedish students. (1) installing fruit stands in schools and (2) combining fruit stands with a health-awareness campaign. The intervention is implemented in a set of participating schools, each following one of the predefined strategies. Students are asked to use a research app to photograph their meals and snacks during three data-collection periods before, during, and after the intervention. The study collects information on fruit intake, eating patterns, and the number of fruits taken from the stands to assess effectiveness and reduce food waste. The aim is to identify which strategy better supports healthy eating habits in school environments.
Read the detailed description
This study is part of the Europe (EU) project "Improving and upscaling primary prevention of cancer by addressing childhood obesity through implementation research" (PREVENT), which aims to promote healthier dietary habits among students by improving access to fruits in school environments. The intervention is implemented in a set of participating schools, each assigned to one of the predefined strategies. The study examines whether providing fruit ad libitum during school hours influences students' snacking patterns, and whether an accompanying awareness campaign adds value beyond fruit availability alone.
In each participating school, fruit stands offering two types of fruit will be placed in central areas where students typically gather. Fruit will be available during periods when students have access to common spaces, and digital scales integrated into the stands will enable weight-based monitoring of fruit uptake. Designated school staff will photograph scale readings at the beginning, end, and one or more intermediate points during the day. These images will be processed using optical character recognition (OCR) to extract weight data and upload it to a secure backend system for automated monitoring of fruit distribution and potential food waste.
To evaluate students' eating behaviour and fruit consumption patterns, participating students will use a research mobile application to photograph their meals and snacks. Data collection takes place in three periods: (1) a baseline period prior to the introduction of fruit stands, (2) an early-intervention period immediately following the introduction of the stands, during which students continue to report all meals to capture short-term behavioural changes, and (3) a post-intervention period to assess sustained effects. The app records time and location metadata for each entry, allowing analysis of when and where food is consumed and how eating patterns change during the intervention.
The primary aim is to assess whether increased availability of free fruit influences students' snacking habits and whether the addition of an awareness campaign further enhances engagement with the fruit stands. Secondary aims include evaluating the feasibility of weight-based digital monitoring, characterising patterns of fruit uptake over the school day, and examining changes in students' overall eating behaviour across measurement periods. All data will be analysed at group level, and the study is considered minimal risk. Findings will support future scalable strategies for fruit distribution in school settings and contribute to broader evaluation of school-based dietary promotion initiatives.
- Conditions
- Dietary Behaviors, Fruit Consumption, Dietary Habits, Healthy Eating, Health Promotion, Schools
- Being tested
- Fruit Stand Availability, Awareness Campaign
- Keywords
- Healthy eating, Dietary behavior, Fruit consumption, School environment, School, Health promotion, Prevention, Behavior change, Implementation study, School-based intervention, Public health, Adolescent health
- Medical subject headings
- Feeding Behavior
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Fruit Stand AvailabilityBehavioural
Free fruit is provided to students through fruit stands placed in central school areas. Two fruit varieties are offered, and fruit uptake is monitored using digital scales integrated into the stands. Students photograph school-provided fruit before eating it and annotate it as "school fruit" in the app, while also documenting all meals and snacks as part of the study protocol.
Awareness CampaignBehavioural
A school-based awareness campaign is delivered to promote healthy eating and encourage fruit consumption. Activities may include posters, messaging, or informational content. The campaign is implemented alongside the fruit stands to enhance student engagement with the intervention.
| Study group | Role | What they receive |
|---|---|---|
| Fruit stands only | Experimental | Schools assigned to this arm receive fruit stands that provide free fruit during the school day. No awareness or educational campaign is implemented. Students report all their meals including fruits and snacks using the research mobile app before, during, and after the intervention Receives: Behavioral: Fruit Stand Availability |
| Fruit stands + awareness campaign | Experimental | Schools assigned to this arm receive fruit stands identical to the fruit-only arm, plus a school-based awareness campaign designed to promote healthy eating and encourage fruit consumption. Students report all their meals including fruits and snacks using the research mobile app before, during, and after the intervention. Receives: Behavioral: Fruit Stand Availability; Behavioral: Awareness Campaign |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in fruit consumption
Measured across baseline, early-intervention, and follow-up to evaluate whether fruit consumption differs between schools receiving fruit stands alone and those receiving fruit stands plus an awareness campaign.
Measured: From enrollment until the end of Post-measurements (10 weeks after enrollment)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Feb 2026
- Study start12 Jan 2026
- Primary completion31 Dec 2026 (estimated)
- Study completion31 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Dietary BehaviorsStudies of the same condition, open and under way.
- More trials run by Karolinska InstitutetThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 300 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Karolinska Institutet
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ioannis Ioakeimidis, Karolinska Institutet
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07385820
- Sponsor's protocol ID
- Dnr 2024-07536-01
- Other IDs
- 101104618 - PREVENT
- Status last verified
- Feb 2026
- First submitted
- 27 Jan 2026
- Last updated
- 6 Feb 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: The investigators plan to share anonymized individual participant data (IPD) in accordance with our ethical approval. Fully anonymous subsets of the data may be made available to external researchers, including through open data repositories, if permitted under the ethical approval and the EU Open Data Directive. External access to anonymized IPD will be considered upon reasonable request and subject to compliance with ethical, legal, and data protection rules."
Study at a glance
From the registry record, last updated by the sponsor on 6 Feb 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- An Interventional Study Evaluating Two Different School Deployment Strategies, Testing the Effects of Onsite Awareness Raising on the Adoption of the Fruit-stands by Local Student Populations
- ClinicalTrials.gov ID
- NCT07385820
- Acronym / sponsor ID
- Dnr 2024-07536-01
- Conditions
- Dietary Behaviors, Fruit Consumption, Dietary Habits, Healthy Eating, Health Promotion, Schools
- Keywords
- Healthy eating, Dietary behavior, Fruit consumption, School environment, School, Health promotion, Prevention, Behavior change
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 300 participants (estimated)
- Lead sponsor
- Karolinska InstitutetUniversity, hospital or other
- Study start
- 12 Jan 2026 (actual)
- Primary completion
- 31 Dec 2026 (estimated)
- Study completion
- 31 Dec 2026 (estimated)
- First posted
- 4 Feb 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This implementation study evaluates two strategies to increase fruit consumption among Swedish students. (1) installing fruit stands in schools and (2) combining fruit stands with a health-awareness campaign. The intervention is implemented in a set of participating schools, each following one of the predefined strategies. Students are asked to use a research app to photograph their meals and snacks during three data-collection periods before, during, and after the intervention. The study collects information on fruit intake, eating patterns, and the number of fruits taken from the stands to assess effectiveness and reduce food waste. The aim is to identify which strategy better supports healthy eating habits in school environments.
Detailed description
This study is part of the Europe (EU) project "Improving and upscaling primary prevention of cancer by addressing childhood obesity through implementation research" (PREVENT), which aims to promote healthier dietary habits among students by improving access to fruits in school environments. The intervention is implemented in a set of participating schools, each assigned to one of the predefined strategies. The study examines whether providing fruit ad libitum during school hours influences students' snacking patterns, and whether an accompanying awareness campaign adds value beyond fruit availability alone.
In each participating school, fruit stands offering two types of fruit will be placed in central areas where students typically gather. Fruit will be available during periods when students have access to common spaces, and digital scales integrated into the stands will enable weight-based monitoring of fruit uptake. Designated school staff will photograph scale readings at the beginning, end, and one or more intermediate points during the day. These images will be processed using optical character recognition (OCR) to extract weight data and upload it to a secure backend system for automated monitoring of fruit distribution and potential food waste.
To evaluate students' eating behaviour and fruit consumption patterns, participating students will use a research mobile application to photograph their meals and snacks. Data collection takes place in three periods: (1) a baseline period prior to the introduction of fruit stands, (2) an early-intervention period immediately following the introduction of the stands, during which students continue to report all meals to capture short-term behavioural changes, and (3) a post-intervention period to assess sustained effects. The app records time and location metadata for each entry, allowing analysis of when and where food is consumed and how eating patterns change during the intervention.
The primary aim is to assess whether increased availability of free fruit influences students' snacking habits and whether the addition of an awareness campaign further enhances engagement with the fruit stands. Secondary aims include evaluating the feasibility of weight-based digital monitoring, characterising patterns of fruit uptake over the school day, and examining changes in students' overall eating behaviour across measurement periods. All data will be analysed at group level, and the study is considered minimal risk. Findings will support future scalable strategies for fruit distribution in school settings and contribute to broader evaluation of school-based dietary promotion initiatives.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Fruit stands only | Experimental | Behavioral: Fruit Stand AvailabilitySchools assigned to this arm receive fruit stands that provide free fruit during the school day. No awareness or educational campaign is implemented. Students report all their meals including fruits and snacks using the research mobile app before, during, and after the intervention |
| Fruit stands + awareness campaign | Experimental | Behavioral: Fruit Stand Availability, Behavioral: Awareness CampaignSchools assigned to this arm receive fruit stands identical to the fruit-only arm, plus a school-based awareness campaign designed to promote healthy eating and encourage fruit consumption. Students report all their meals including fruits and snacks using the research mobile app before, during, and after the intervention. |
Who may qualify
- Ages
- 7 to 19 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (4 listed)
- Students enrolled in a Swedish school (elementary, middle, or high school)
- Ages 7-19 years
- Able to use a mobile phone to document meals and snacks
- Provided informed consent (with parental consent required for participants under 15 years old)
Key exclusion criteria (1 listed)
- Presence of any clinically significant disease or condition that, in the opinion of the research team, may interfere with participation or influence study outcomes
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Fruit Stand AvailabilityFree fruit is provided to students through fruit stands placed in central school areas. Two fruit varieties are offered, and fruit uptake is monitored using digital scales integrated into the stands. Students photograph school-provided fruit before eating it and annotate it as "school fruit" in the app, while also documenting all meals and snacks as part of the study protocol. | Behavioural | Fruit stands + awareness campaign, Fruit stands only |
| Awareness CampaignA school-based awareness campaign is delivered to promote healthy eating and encourage fruit consumption. Activities may include posters, messaging, or informational content. The campaign is implemented alongside the fruit stands to enhance student engagement with the intervention. | Behavioural | Fruit stands + awareness campaign |
Primary outcome
Change in fruit consumption
Time frame: From enrollment until the end of Post-measurements (10 weeks after enrollment)
Measured across baseline, early-intervention, and follow-up to evaluate whether fruit consumption differs between schools receiving fruit stands alone and those receiving fruit stands plus an awareness campaign.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Feb 2026.
- Individual participant dataSharing planned: Yes. The investigators plan to share anonymized individual participant data (IPD) in accordance with our ethical approval. Fully anonymous subsets of the data may be made available to external researchers, including through open data repositories, if permitted under the ethical approval and the EU Open Data Directive. External access to anonymized IPD will be considered upon reasonable request and subject to compliance with ethical, legal, and data protection rules."
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Fruit Stand Availability and Awareness Campaign in people with Dietary Behaviors and Fruit Consumption, run by Karolinska Institutet at 2 sites in Sweden.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 6 Feb 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in Sweden. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Each site lists its own contact: choose the nearest one under Trial locations. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in fruit consumption (time frame: From enrollment until the end of Post-measurements (10 weeks after enrollment)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Feb 2026.