NCT07505459

Brief Summary

The goal of this clinical trial is to learn if an AI-based peer-mentoring works to prevent obesity in adolescents and young adults. The main questions it aims to answer are: Does the AI-based peer-mentoring improve dietary habits and increase physical activity in healthy individuals 12-25 yrs old? Does the AI-based peer-mentoring reduces the risk of obesity? Researchers will compare the AI-based behavioral peer-mentoring intervention to traditional peer-mentoring and to health education intervention to see if AI-based peer-mentoring is more effective. Participants will: Follow either a structured AI-based peer-mentoring program or a traditional peer-mentoring program or health education sessions focusing on diet and physical activity They will be evaluated at baseline, at 6 months and at 12 months

Trial Health

67
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
840

participants targeted

Target at P75+ for not_applicable

Timeline
16mo left

Started Sep 2027

Geographic Reach
3 countries

3 active sites

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 21, 2026

Completed
11 days until next milestone

First Posted

Study publicly available on registry

April 1, 2026

Completed
1.4 years until next milestone

Study Start

First participant enrolled

September 1, 2027

Expected
1.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 30, 2028

Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 30, 2028

Last Updated

April 14, 2026

Status Verified

April 1, 2026

Enrollment Period

1.3 years

First QC Date

March 21, 2026

Last Update Submit

April 9, 2026

Conditions

Keywords

Peer-mentoringObesityBehavioral changeNutritionPhysical activityYouthDigital healthprevention

Outcome Measures

Primary Outcomes (7)

  • Food Frequency Questionnaire

    Self- or parent-reported questionnaire on the consumption of several food categories

    From study enrollment to study completion at 12 months

  • KIDMED INDEX

    A questionnaire used to measure adherence to the Mediterranean diet in children and adolescents

    From study enrollment to study completion at 12 months

  • Accelerations measurement

    Measurement of accelerations through an accelerometer to evaluate the degree of physical activity

    From study enrollment to study completion at 12 months

  • Healthy Diet Index

    It is a measure of diet quality

    From study enrollment to study completion at 12 months

  • Steps measurement

    Number of steps per dayy measured by an accelerometer

    From study enrollment to study completion at 12 months

  • International Physical Activity Questionnaire (IPAQ)

    It is an instrument that assesses the level of physical activity

    From study enrollment to study completion at 12 months

  • PACER

    Measurement of cardiorespiratory fitness

    From study enrollment to study completion at 12 months

Secondary Outcomes (18)

  • BMI

    From study enrollment to study completion at 12 months

  • Waist circumference

    From study enrollment to study completion at 12 months

  • Lipidemic profile

    From study enrollment to study completion at 12 months

  • Skin carotenoid levels

    From study enrollment to study completion at 12 months

  • 25-OH D3

    From study enrollment to study completion at 12 months

  • +13 more secondary outcomes

Study Arms (3)

AI-informed peer-mentoring behavioral intervention

EXPERIMENTAL

AI-informed peer-mentoring program combining digitally facilitated peer mentoring, evidence-based behavioural interventions, and non-invasive self-monitoring technologies to support self-management, improve diet quality, increase physical activity and reduce the risk of obesity

Behavioral: AI-informed behavioral intervention

Standard peer-mentoring

ACTIVE COMPARATOR

Standard peer-mentoring program aiming at improving diet quality, increasing physical activity and reducing obesity risk

Other: Health Education

Health educational intervention

ACTIVE COMPARATOR

Regular health education sessions delivered by professional educators which focus on nutrition and physical activity

Behavioral: Standard behavioral intervention

Interventions

A hybrid, human-delivered peer-mentoring intervention, combining in-person and remote interactions and supported by AI-informed tools that provide mentors with access to ethically governed, privacy-preserving participant indicators. The intervention will operate under a supervisor-in-the-loop model, ensuring participant safety, intervention quality and ethical compliance, mentor support, and timely escalation to professional care when risks exceed the scope of peer support.

AI-informed peer-mentoring behavioral intervention

Standard in-person behavioral intervention

Health educational intervention

Regular professional-delivered health educational sessions on nutrition and physical activity

Standard peer-mentoring

Eligibility Criteria

Age12 Years - 25 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • Healthy individuals aged 12-25 yrs -

You may not qualify if:

  • Obesity Severe cognitive and communication deficits

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (3)

University Hospital of Patras

Pátrai, Achaia, 26500, Greece

Location

University of Bologna

Modena, Emilia-Romagna, Italy

Location

Lulea Technical University

Luleå, Sweden

Location

MeSH Terms

Conditions

ObesityMotor Activity

Condition Hierarchy (Ancestors)

OverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and SymptomsBehavior

Central Study Contacts

Luca Arcangeli, Dr

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Assistant Professor of Child and Adolescent Psychiatry

Study Record Dates

First Submitted

March 21, 2026

First Posted

April 1, 2026

Study Start (Estimated)

September 1, 2027

Primary Completion (Estimated)

December 30, 2028

Study Completion (Estimated)

December 30, 2028

Last Updated

April 14, 2026

Record last verified: 2026-04

Data Sharing

IPD Sharing
Will share

Anonymized data regarding behaviors, medical information

Shared Documents
STUDY PROTOCOL, SAP, ICF

Locations