NutriTrack: AI-Assisted Nutritional Tracking in the Obesity Clinic

NCT07588620 | Not Yet Recruiting

• 1 other identifier: NUTRITRACK-CEI-HCSC-2026-001
• Study Type: observational
• Target: 50
• Locations: 1 country
• Sites: 1

Brief Summary

NutriTrack is a digital health application designed to support nutritional and behavioral tracking in patients with obesity followed in an outpatient obesity clinic. The application allows patients to record food intake using food photographs, barcode scanning, or manual search, and to register behavioral variables related to eating episodes. This prospective, single-center, observational pilot study will evaluate the feasibility and usability of NutriTrack in 20 to 50 adult patients with obesity or overweight with comorbidities followed at the Obesity Clinic of Hospital Clínico San Carlos. Participants will use the application for 4 weeks as a complementary tool. The information generated by NutriTrack will be available to healthcare professionals as supportive information and will not replace clinical judgment or modify usual care decisions. The main outcome is usability measured using the System Usability Scale. Secondary and exploratory outcomes include agreement between artificial intelligence-based nutritional estimates and standard dietitian assessment, adherence to daily food logging, professional perceived clinical utility, changes in eating behavior and emotional regulation scales, and technical feasibility of data export.

Conditions

Obesity & Overweight

Keywords

Digital health; Artificial intelligence; Nutritional tracking; Food recognition; Mobile health; Eating behavior; Usability

Outcome Measures

Primary Outcomes (1)

• System Usability Scale score

  Usability of the NutriTrack application measured using the System Usability Scale. The score ranges from 0 to 100, with higher scores indicating better usability. A score of 70 or higher will be considered acceptable.

  Week 4

Secondary Outcomes (3)

• Correlation between AI-based caloric estimation and dietitian assessment

  Week 4

• Adherence to daily food logging

  From baseline to Week 4

• Healthcare professional perceived clinical utility score

  Week 4

Other Outcomes (5)

• Change in Difficulties in Emotion Regulation Scale score

  Baseline to Week 4

• Change in Eating Disorder Examination Questionnaire score

  Baseline to Week 4

• Digital competence score

  Baseline

Study Arms (1)

NutriTrack Observational Cohort

Adult patients with obesity or overweight with comorbidities followed at the Obesity Clinic of Hospital Clínico San Carlos who will use the NutriTrack application for 4 weeks as a complementary nutritional and behavioral tracking tool.

Other: NutriTrack digital health application

Interventions

NutriTrack digital health application OTHER

NutriTrack is a digital health application used for nutritional and behavioral tracking. Patients record food intake using food photographs, barcode scanning, or manual search, and report behavioral variables such as hunger, satiety, emotional state, eating context, eating speed, perceived control, and cravings. The application output is informational, requires healthcare professional supervision, and does not replace clinical judgment or modify usual care.

Also known as: NutriTrack

NutriTrack Observational Cohort

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Adult patients with obesity or overweight with comorbidities who are in active follow-up at the Obesity Clinic of Hospital Clínico San Carlos and who have regular access to and use of a smartphone with iOS or Android operating system.

You may qualify if:

• Age 18 years or older.
• Diagnosis of obesity, defined as body mass index 30 kg/m2 or higher, or overweight with comorbidities, defined as body mass index 27 kg/m2 or higher.
• Active follow-up at the Obesity Clinic of Hospital Clínico San Carlos.
• Regular possession and use of a smartphone with iOS or Android operating system.
• Ability to read and understand Spanish.
• Signed informed consent.

You may not qualify if:

• Active diagnosed eating disorder, including anorexia nervosa, bulimia nervosa, or binge eating disorder.
• Cognitive impairment preventing autonomous use of the application.
• Simultaneous participation in another nutritional intervention study.
• Inability or refusal to use mobile technology.
• Current pregnancy or breastfeeding.
• Acute medical condition requiring hospitalization during the study period.

Sponsors & Collaborators

• Francisco José García González: lead
• Hospital San Carlos, Madrid: collaborator

Study Sites (1)

Hospital Clínico San Carlos

Madrid, Madrid, 28040, Spain

Location

Related Publications (4)

• Ministerio de Sanidad. Base de Datos Española de Composición de Alimentos (BEDCA). 2023.

  BACKGROUND

• Gratz KL, Roemer L. Multidimensional assessment of emotion regulation and dysregulation. Journal of Psychopathology and Behavioral Assessment. 2004;26(1):41-54.

  BACKGROUND

• Fairburn CG, Beglin SJ. Eating Disorder Examination Questionnaire (EDE-Q 6.0). Guilford Press; 2008.

  BACKGROUND

• Brooke J. SUS: A quick and dirty usability scale. Usability Evaluation In Industry. 1996;189(194):4-7.

  BACKGROUND

MeSH Terms

Conditions

Obesity; Overweight; Feeding Behavior

Condition Hierarchy (Ancestors)

Overnutrition; Nutrition Disorders; Nutritional and Metabolic Diseases; Body Weight; Signs and Symptoms; Pathological Conditions, Signs and Symptoms; Behavior, Animal; Behavior

Study Officials

• Francisco José García González, PhD, RN

  Hospital Clínico San Carlos / Universidad Complutense de Madrid

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Francisco José García González, PhD, RN

CONTACT

+34657675111; franciscojose.garcia@salud.madrid.org

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Principal Investigator; CEPs Coordinator

Study Record Dates

• First Submitted: May 6, 2026
• First Posted: May 15, 2026
• Study Start (Estimated): June 15, 2026
• Primary Completion (Estimated): July 15, 2026
• Study Completion (Estimated): September 30, 2026
• Last Updated: May 15, 2026

Record last verified: 2026-05

Data Sharing

• IPD Sharing: Will not share

Locations

ES (1)