The Effect of Breathing Helium-Hyperoxia During Pulmonary Rehabilitation in Patients With COPD

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00406705
Recruitment Status : Completed
First Posted : December 4, 2006
Last Update Posted : May 4, 2007
Information provided by:
University of Alberta

November 29, 2006
December 4, 2006
May 4, 2007
March 2005
Not Provided
Constant-load exercise tolerance after 6 weeks of exercise rehabilitation
Same as current
Complete list of historical versions of study NCT00406705 on Archive Site
  • Maximum oxygen consumption after 6 weeks of exercise rehabilitation
  • Quality of Life measured after 6 weeks of exercise rehabilitation
  • Dyspnea at an isotime during constant-load exercise after 6 weeks of exercise rehabilitation
Same as current
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The Effect of Breathing Helium-Hyperoxia During Pulmonary Rehabilitation in Patients With COPD
A Randomized Controlled Trial to Study the Effect of Exercise Training Breathing Helium-Hyperoxia on The Exercise Tolerance and Quality of Life of Patients With Chronic Obstructive Pulmonary Disease
The purpose of this study is to examine whether breathing helium-hyperoxia during exercise in a pulmonary rehabilitation program can improve the exercise tolerance and health related quality of life of patients with Chronic Obstructive Pulmonary Disease (COPD).

It is well accepted that the exercise training as part of a comprehensive pulmonary rehabilitation program can improve exercise tolerance, functional status and quality of life in patients with COPD. It is feasible that if patients were able to perform a greater volume or intensity of exercise during rehabilitation then the outcomes of the program would be improved. Recent research has demonstrated that breathing a helium-hyperoxic gas mixture can significantly reduce dynamic hyperinflation and dyspnea during exercise in patients with COPD and can increase exercise tolerance to a greater extent than breathing room air or a nitrogen-based hyperoxic gas. If patients with COPD were to breathe a helium-hyperoxic gas during exercise they should be able to tolerate a greater intensity of exercise while maintaining similar levels of exertional symptoms to those observed at lower exercise intensities breathing room air. As a result patients randomized to the helium-hyperoxia condition should obtain greater improvements in exercise tolerance than those receiving usual care (i.e. breathing room air)

Comparisons: Standard pulmonary rehabilitation of patients with COPD receiving either usual care (air breathing) or helium-hyperoxia (40% O2, 60% Helium).

Phase 2
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double
Primary Purpose: Treatment
  • Chronic Obstructive Pulmonary Disease
  • COPD
  • Emphysema
  • Lung Diseases
  • Bronchitis, Chronic
Behavioral: Helium-Hyperoxia
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*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Same as current
January 2007
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Inclusion Criteria:

  • FEV1/FVC<70% predicted;
  • FEV1<70% predicted;
  • RV>140% predicted.

Exclusion Criteria:

  • Cardiovascular contraindications to exercise;
  • Musculoskeletal abnormalities that limit exercise tolerance;
  • SpO2<85% during a constant work rate test;
  • On supplemental oxygen.
  • Exacerbation within the last month
Sexes Eligible for Study: All
Child, Adult, Older Adult
Contact information is only displayed when the study is recruiting subjects
MSI 824
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University of Alberta
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Principal Investigator: Neil D Eves, PhD University of Calgary, AB, Canada
University of Alberta
March 2007

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP