Can High-Flow Oxygen Therapy Improve Oxygenation During Exercise in ILD Patients?

Study Purpose

Objectives: 1.- To compare the level of oxygenation achieved during muscular training with conventional oxygen systems (nasal cannulas) versus nasal High-flow oxygen therapy. 2.-To compare benefits achieved with both systems, in terms of: level of exercise during training; effort tolerance in the 6 minutes walking test (6MWT); improvement of dyspnoea and Health-related quality of life (HRQoL). And analyse the effects of nasal High-flow oxygen therapy on the acute exercise in a subgroup of patients. Method: Multicentric randomized clinical trial. Patients with ILD in fibrotic phase who present oxygen desaturation during 6MWT (SpO2 mean ≤ 85%) will be included consecutively. Will be randomized in two groups: ILD patients with conventional oxygen (EPIDOC) and ILD patients with nasal High-Flow oxygen therapy (EPIDOAF). Both groups will perform a Pulmonary Rehabilitation Program. Oxygen will be titrated respectively to flow and FiO2 needed to maintain SpO2 ≥ 90% during training with both systems. Evaluation measures: SpO2 during training in both groups; dyspnoea (mMRC scale and CRQ dyspnoea); exercise capacity (6MWT) and HRQoL (self- administered KBILD questionnaire and SF36). In a subgroup of patients will be compared time of endurance exercise to evaluate the effects of nasal high-flow oxygen therapy in the acute exercise.

Recruitment Criteria

Accepts Healthy Volunteers

Healthy volunteers are participants who do not have a disease or condition, or related conditions or symptoms

Study Type

An interventional clinical study is where participants are assigned to receive one or more interventions (or no intervention) so that researchers can evaluate the effects of the interventions on biomedical or health-related outcomes.

An observational clinical study is where participants identified as belonging to study groups are assessed for biomedical or health outcomes.

Searching Both is inclusive of interventional and observational studies.

Eligible Ages 30 Years and Over
Gender All
More Inclusion & Exclusion Criteria

Inclusion Criteria:

- Age > 30 years old - Diagnostic of ILD according to the national and international guidelines 23 - Being clinically stable the previous 4 weeks - Acceptance to participate in the trial

Exclusion Criteria:

- Have been enrolled in a PR program in the last previous 6 months - Respiratory Diseases other than ILD or severe comorbidities - Osteoarticular diseases which don't allow training - End-stage ILD, treatment with opiates or survival < 6 months - Cognitive alterations that preclude colaboration

Trial Details

Trial ID:

This trial id was obtained from, a service of the U.S. National Institutes of Health, providing information on publicly and privately supported clinical studies of human participants with locations in all 50 States and in 196 countries.


Phase 1: Studies that emphasize safety and how the drug is metabolized and excreted in humans.

Phase 2: Studies that gather preliminary data on effectiveness (whether the drug works in people who have a certain disease or condition) and additional safety data.

Phase 3: Studies that gather more information about safety and effectiveness by studying different populations and different dosages and by using the drug in combination with other drugs.

Phase 4: Studies occurring after FDA has approved a drug for marketing, efficacy, or optimal use.

Lead Sponsor

The sponsor is the organization or person who oversees the clinical study and is responsible for analyzing the study data.

Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau
Principal Investigator

The person who is responsible for the scientific and technical direction of the entire clinical study.

Principal Investigator Affiliation N/A
Agency Class

Category of organization(s) involved as sponsor (and collaborator) supporting the trial.

Overall Status Not yet recruiting

The disease, disorder, syndrome, illness, or injury that is being studied.

Intersticial Lung Disease
Arms & Interventions


Active Comparator: Conventional oxygen (EPIDOC)

Patients randomized in conventional oxygen (EPIDOC) group will perform a Pulmonary Rehabilitation Program. Oxygen will be titrated to flow needed to maintain SpO2 ≥ 90% during training with both systems.

Active Comparator: Nasal High-Flow oxygen therapy (EPIDOAF)

Patients will be randomized in nasal High-Flow oxygen therapy (EPIDOAF) group will perform a Pulmonary Rehabilitation Program. Oxygen will be titrated to FiO2 needed to maintain SpO2 ≥ 90% during training with both systems.


Drug: - oxygen therapy

conventional nasal prongs vs nasal high flow oxygen during Pulmonary Rehabilitation in Interstitial Lung Disease.

Contact Information

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For additional contact information, you can also visit the trial on

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