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Relationship between exercise capacity and impulse oscillometry parameters after COVID-19 infections
Ipek Candemir1, Pinar Ergun2, Mustafa Engin Şahin2
1Ataturk Chest Diseases and Surgery Education and Research Hospital, Ankara, Turkey. ipekcayli@yahoo.com.
Wiener Klinische Wochenschrift
|December 30, 2022
Summary
Persistent exercise intolerance after COVID-19 may be linked to small airway changes detected by impulse oscillometry (IOS). These IOS parameters correlate with exercise capacity, even with normal spirometry, suggesting underlying small airway disease in COVID-19 survivors.
Area of Science:
- Pulmonary Medicine
- Respiratory Physiology
- Post-COVID Conditions
Background:
- COVID-19 infection can lead to persistent exercise intolerance and altered lung function.
- Understanding the relationship between lung mechanics and exercise capacity post-COVID is crucial for rehabilitation.
Purpose of the Study:
- To investigate the correlation between impulse oscillometry (IOS) parameters and exercise capacity in COVID-19 survivors.
- To identify factors influencing both IOS parameters and exercise capacity tests.
Main Methods:
- A cross-sectional study enrolled COVID-19 survivors.
- Collected data included IOS parameters, incremental and endurance shuttle walk tests (ISWT, ESWT), spirometry (FVC, FEV1), BMI, FFMI, and symptom scores.
- Analyzed correlations between IOS, exercise tests, and clinical factors.
Main Results:
- 72 patients (mean age 54 years, 71% male) were studied, with 71% hospitalized.
- IOS parameters (AX, Fres, X20, R5-20) correlated with ISWT and ESWT.
- FEV1 correlated with all IOS parameters; reactance correlated with FFMI and hospitalization status.
Conclusions:
- Impulse oscillometry parameters correlate with exercise capacity in COVID-19 survivors.
- Small airway disease, potentially indicated by IOS, may reduce exercise capacity despite normal spirometry.
- These findings are independent of comorbidities, BMI, smoking, and time since diagnosis.
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