- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01173328
Effects of Pursed-lip Breathing on Exercise Tolerance and Dynamic Hyperinflation in COPD
Effects of Pursed-lip Breathing on Exercise Tolerance and Dynamic Hyperinflation in Chronic Obstructive Pulmonary Disease
Pursed-lip breathing (PLB) has been advocated to reduce respiratory rate and improve oxygen saturation in patients with chronic obstructive pulmonary disease (COPD) at rest. Although PLB is a strategy that potentially reduces expiratory flow limitation, there are only few studies addressing its effects on exercise.
This study aimed to assess the ability of PLB to change the breathing pattern, degree of dynamic hyperinflation (DH) and arterial oxygenation in COPD patients during exercise. Exercise tolerance was evaluated by endurance time and respiratory mechanics was evaluated by forced oscillation technique.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Rio de Janeiro, Brazil
- Clementino Fraga Filho University Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Clinical diagnosis of chronic obstructive pulmonary disease (COPD)
- Regular treatment at Clementino Fraga Filho University Hospital (UFRJ)
Exclusion Criteria:
- Exacerbation in the preceding 4 weeks
- SpO2<85% at peak exercise
- Other diseases that may contribute to dyspnea and exercise intolerance
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Pursed-lip Breathing
|
Pursed-lip breathing involves a nasal inspiration followed by expiratory blowing against partially closed lips, avoiding forceful exhalation.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Endurance time
Time Frame: within the first 01 hour
|
within the first 01 hour
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
inspiratory capacity
Time Frame: within the first 01 hour
|
within the first 01 hour
|
oxygen saturation
Time Frame: within the first 01 hour
|
within the first 01 hour
|
dyspnea
Time Frame: within the first 01 hour
|
within the first 01 hour
|
forced oscillation variables
Time Frame: within the first 01 hour
|
within the first 01 hour
|
Collaborators and Investigators
Investigators
- Study Director: Fernando S Guimarães, PhD, Universidade Federal do Rio de Janeiro
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- CEP/HUCFF/UFRJ 187/07
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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