Effect of an App-based Intervention on Air Pollution in COPD Patients

Chronic obstructive pulmonary disease (COPD) is a long-term lung condition that makes it hard to breathe and often gets worse over time. Many people with COPD experience flare-ups, which are periods when symptoms suddenly get worse. These flare-ups can be triggered by poor air quality and may lead to hospital visits or reduced quality of life.

This study will test a non-drug approach to help people with COPD manage their condition better. The researchers want to find out if using a combination of tools-health education, a mobile app, and a smart band-can reduce the number of flare-ups and improve quality of life.

The mobile app (AirVisual) provides real-time information about outdoor air quality, which may help participants avoid pollution. The smart band (Amazfit Band 5) tracks physical activity and sleep, helping users stay active and monitor their health. Participants in the intervention group will be trained on how to use both tools and receive general education about COPD management. The control group will receive standard care and advice.

A total of 150 participants will be recruited from urban health centers in Salamanca, Spain. Participants will be randomly assigned to either the intervention or control group. The study will last 6 months. All participants will have a clinical visit at the beginning and at the end of the study, where health measurements and quality-of-life questionnaires will be completed.

The goal is to learn whether this digital, non-pharmacological approach can support better daily management of COPD and lead to fewer symptom flare-ups.

Inclusion criteria

Male or female, aged 18 years or older

Clinical diagnosis of chronic obstructive pulmonary disease (COPD) based on GOLD 2022 criteria (post-bronchodilator FEV1/FVC < 0.70)

Receiving care at urban primary care centers in Salamanca, Spain

Able to use a smartphone (independently or with minimal assistance)

Able and willing to provide written informed consent

Exclusion criteria

Diagnosis of a respiratory disease other than COPD (e.g., asthma, interstitial lung disease)

Moderate to severe cognitive impairment

Significant physical limitation that prevents participation in physical activity (e.g., NYHA Class III or IV heart failure, musculoskeletal conditions limiting walking)

Advanced kidney or liver disease

Severe mental illness or terminal condition

Participation in another clinical trial

Inability to use the mobile phone or smart band due to physical or technological limitations

Plans to relocate to another city within 12 months of study start