NCT07661732

Brief Summary

The goal of this clinical trial is to learn if a digital lifestyle education program improves exercise capacity in adults who have heart failure with preserved ejection fraction (HFpEF) and overweight or obesity. HFpEF is a type of heart failure in which the heart muscle is stiff and does not relax well, even though its pumping strength looks normal. The main questions it aims to answer are:

  • Does the program improve how much oxygen participants can use during exercise, a measure of fitness, after 6 months?
  • Does the program improve participants' quality of life and help them lose weight? Researchers will compare a group that uses the digital program plus usual care to a group that receives usual care alone. This will show whether the program adds a benefit. Participants will:
  • Be placed by chance into one of the two groups
  • Use a study website with short videos on exercise, healthy eating, and managing stress (program group), with new content every week for 6 months
  • Have exercise tests, an ultrasound scan of the heart, blood tests, and complete a quality-of-life questionnaire at the start and after 6 months Both groups will keep taking their usual heart failure medicines.

Trial Health

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Trial Health Score

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

Enrollment
52

participants targeted

Target at P25-P50 for not_applicable

Timeline
34mo left

Started Sep 2026

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
not yet recruiting

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

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

June 11, 2026

Completed
11 days until next milestone

First Posted

Study publicly available on registry

June 22, 2026

Completed
2 months until next milestone

Study Start

First participant enrolled

September 1, 2026

Expected
2.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2028

6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

June 30, 2029

Last Updated

June 22, 2026

Status Verified

June 1, 2026

Enrollment Period

2.3 years

First QC Date

June 11, 2026

Last Update Submit

June 16, 2026

Conditions

Keywords

HFpEFobesityoverweightdigital healtheHealthmHealthtelemedicineweb-based interventionlifestyle interventioncardiac rehabilitationMediterranean dietcardiopulmonary exercise testingquality of life

Outcome Measures

Primary Outcomes (2)

  • Change in peak oxygen uptake (VO2max)

    Change from baseline in peak oxygen uptake (VO2max, mL/kg/min) measured by cardiopulmonary exercise testing (cardiopulmonary exercise testing, CPET). Higher values indicate greater functional capacity.

    Baseline and 6 months

  • Change in peak oxygen uptake (VO2max)

    Change from baseline in peak oxygen uptake (VO2max, mL/kg/min) measured by cardiopulmonary exercise testing (cardiopulmonary exercise testing, CPET). Higher values indicate greater functional capacity. The between-group difference in change is analyzed by ANCOVA adjusted for the baseline value.

    Baseline and 6 months

Secondary Outcomes (7)

  • Change in Kansas City Cardiomyopathy Questionnaire (KCCQ) overall summary score

    Baseline and 6 months

  • Percent change in body weight

    Baseline and 6 months

  • Worsening heart failure

    6 months

  • All-cause mortality

    6 months

  • Change in fat mass

    Baseline and 6 months

  • +2 more secondary outcomes

Other Outcomes (1)

  • Change in VE/VCO2 slope

    Baseline and 6 months

Study Arms (2)

Digital lifestyle intervention

EXPERIMENTAL

Access to the study web platform with weekly lifestyle education modules, plus guideline-directed HFpEF therapy.

Behavioral: Digital lifestyle education program

Usual care

ACTIVE COMPARATOR

Standard lifestyle recommendations given during routine consultation, plus guideline-directed HFpEF therapy.

Other: Usual Care

Interventions

Access to a study-specific web platform delivering structured healthy-lifestyle content as short videos (5 to 10 minutes) in thematic modules that unlock weekly over 6 months, covering adapted physical exercise, Mediterranean-diet-based healthy eating, and psychoemotional support.

Digital lifestyle intervention

Standard lifestyle recommendations provided during routine cardiology consultation, without access to the study web platform. Both groups continue guideline-directed medical therapy for HFpEF.

Usual care

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age over 18 years
  • Body mass index (BMI) over 27 kg/m²
  • Symptoms consistent with heart failure
  • Left ventricular ejection fraction (LVEF) of 50% or higher
  • Elevated NT-proBNP according to the European Society of Cardiology age-adjusted rule-in thresholds: 125 pg/mL or higher if under 50 years, 250 pg/mL or higher if 50 to 75 years, and 500 pg/mL or higher if 75 years or older
  • Echocardiographic abnormalities: left ventricular hypertrophy, left atrial enlargement, or diastolic dysfunction

You may not qualify if:

  • Body mass index (BMI) over 40 kg/m²
  • Life expectancy of less than 1 year
  • Chronic kidney disease on renal replacement therapy
  • Moderate or greater valvular heart disease
  • Inability to exercise

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

IMIBIC

Córdoba, Córdoba, 14004, Spain

Location

MeSH Terms

Conditions

Heart Failure, DiastolicObesityOverweightHeart Failure

Condition Hierarchy (Ancestors)

Heart DiseasesCardiovascular DiseasesOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and Symptoms

Study Officials

  • Manuel Cabello Terrón, MD

    H. Universitario Reina Sofía de Córdoba

    PRINCIPAL INVESTIGATOR
  • José López Aguilera, MD PhD

    H. Universitario Reina Sofía de Córdoba / IMIBIC

    PRINCIPAL INVESTIGATOR
  • Rafael Gonzalez-Manzanares, MD PhD

    H. Universitario Reina Sofía de Córdoba / IMIBIC / CIBERCV / CNIC

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Rafael Gonzalez-Manzanares, MD, PhD

CONTACT

José Carlos Garrido Gracia

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 11, 2026

First Posted

June 22, 2026

Study Start (Estimated)

September 1, 2026

Primary Completion (Estimated)

December 31, 2028

Study Completion (Estimated)

June 30, 2029

Last Updated

June 22, 2026

Record last verified: 2026-06

Locations