Air as a Placebo: Increasing the Respiratory Performance of People With COPD Through Simple Expectations of Improvement

Inclusion Criteria

• •Subjects who voluntarily agree to participate in the study;
• •Subjects with moderate-grade Chronic Obstructive Pulmonary Disease (COPD) (GOLD 2-50% ≤ FEV1 \<80% of predicted) according to GOLD criteria;
• •Subjects undergoing treatment with oxygen therapy and non-smokers;
• •Ex-smokers
• •Outpatients and inpatients