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

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 40 (actual)
• Sponsor: Universidade Federal do Rio de Janeiro · Academic / Other
• Sex: All
• Age: 40 Years
• Healthy volunteers: Not accepted

Summary

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.

Conditions

• Chronic Obstructive Pulmonary Disease

Interventions

Type	Name	Description
BEHAVIORAL	Pursed-lip breathing	Pursed-lip breathing involves a nasal inspiration followed by expiratory blowing against partially closed lips, avoiding forceful exhalation.
BEHAVIORAL	Normal Breathing

Timeline

• Start date: 2007-03-01
• Primary completion: 2009-10-01
• Completion: 2009-10-01
• First posted: 2010-08-02
• Last updated: 2010-08-02

Locations

1 site across 1 country: Brazil