Healthy volunteers
Accepted
As an inclusion criterion, patients with COPD must be included and must have been undergoing clinical-medication treatment for at least 90 days. As exclusion criteria, they should not have any type of autoimmune disease, must not be active smokers for at least 1 year, and in the case of ex-smokers, they must have quit smoking for at least 3 years, and must not have been engaging in any regular physical activity (˃1x/week) for at least 1 year.