Can a simple inhaler boost exercise in COPD patients with overinflated lungs?
NCT ID NCT04994574
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at whether a combination inhaler (tiotropium/olodaterol) can improve exercise capacity in people with COPD who have overinflated lungs. 44 adults used the inhaler for 4 weeks, and researchers measured changes in oxygen use during exercise, heart function, and quality of life. The goal was to see if the treatment helps patients breathe easier and be more active.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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44 people
The number who actually took part.
- Started
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Aug 2021
- Finished
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Jul 2024
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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40 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. The person who voluntarily signed the consent form 2. Adults over 40 years of age 3. Patients who diagnosed with COPD 4. Patients with smoking history of 10 packs or more 5. Patients who are taking or in need of tiotropium/olodaterol inhaler for the treatment of COPD 6. Patients in a clinically stable state within 3 months of screening 7. Patients who confirmed FEV1/FVC \< 0.7 and FEV1 \<80% after using bronchodilator 8. Patients who confirmed FRC \> 125% 9. Patients who confirmed mMRC \> 2 Exclusion Criteria: 1. Patients with a history of asthma 2. Patients with asthma- COPD overlap 3. Patients with serious disease other than COPD 4. Patients with unstable or life-threatening cardiac arrhythmias 5. Patients hospitalized for heart failure or myocardial infarction within 1 year of screening 6. Patients with systolic ejection fraction less than 40% 7. Patients with unstable ischemic heart disease 8. Patients receiving regular oxygen therapy for 1hour or more per day 9. Others who are difficult to participate in the research under judgment of the investigation
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Severance Hospital, Yonsei University Health System
Seoul, South Korea
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