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Effects of a Diaphragmatic Breathing Training Program in Chronic Obstructive Pulmonary Disease (COPD) Patients

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: NCT01223807
Recruitment Status : Completed
First Posted : October 19, 2010
Last Update Posted : October 19, 2010
Information provided by:
University of Sao Paulo

Brief Summary:

Diaphragmatic dysfunction and alterations of thoracoabdominal motions are common in patients with chronic obstructive pulmonary disease (COPD). Several studies have described an impairment in diaphragmatic mobility of COPD patients compared to age matched control subjects and it has been associated with increase in dyspnea, exercise intolerance and mortality. COPD patients also experiment a higher activity of the accessory breathing muscles, which greatly increases the work of breathing and dyspnea sensation.

Breathing strategies have been considered an important component of pulmonary rehabilitation and refer to a range of techniques, including/which includes the diaphragmatic breathing (DB). The principal aim of DB is to improve the participation of the abdominal motion while reducing the accessory muscles activity. The role of DB as an adjunctive treatment modality in the rehabilitation of COPD patients remains controversial. Despite the conflicting results, improvement of the abdominal motion and a reduction of thoracic excursion, during voluntarily DB, has been described as a common finding of several studies. The investigators hypothesized that a 4-week DBTP could induce higher participation of the diaphragm and this modification would relieve respiratory symptoms and improve exercise tolerance and the HRQoL. Therefore, in this randomized controlled trial the investigators aimed to test the effects of a short-term DBTP on thoracoabdominal motion, pulmonary function, diaphragmatic mobility, dyspnea, HRQoL and exercise tolerance in patients with mild to severe COPD.

Condition or disease Intervention/treatment Phase
COPD Other: Diaphragmatic breathing training Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 30 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Investigator)
Primary Purpose: Treatment
Official Title: Effects of a Short-term Diaphragmatic Breathing Training Program in COPD Patients: a Randomized Controlled Trial
Study Start Date : June 2008
Actual Primary Completion Date : December 2009

Arm Intervention/treatment
No Intervention: Control Group
The control group will receive only usual care.
Experimental: Diaphragmatic breathing training
The training group will be submitted to a diaphragmatic breathing training program of 4 weeks.
Other: Diaphragmatic breathing training
The training group will participate in a diaphragmatic breathing program which will consist of three 45-min sessions each week (12 sessions totally). The program training will be individualized and supervised by the same physiotherapist. In each session, the patients will be initially instructed to perform 3 series of 10 maximally inspirations, predominantly with abdominal motion, while reducing upper rib cage motion in a supine position.

Primary Outcome Measures :
  1. thoracoabdominal motion [ Time Frame: 2 years ]

Secondary Outcome Measures :
  1. diaphragmatic mobility [ Time Frame: 2 years ]

Information from the National Library of Medicine

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Ages Eligible for Study:   50 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria: (1) age between 50 and 80 years; (2) a post-bronchodilator forced expiratory volume in one second (FEV1) < 80% of the predicted value and a FEV1/ forced vital capacity (CVF) ratio < 0,7; (3) stable respiratory/clinical condition without changes in medication and symptoms (dyspnea, volume or color of sputum) for at least 4 weeks before admission to the study; and (4) receiving regular treatment with inhaled bronchodilators and steroids.

Exclusion Criteria: (1) presence of other pulmonary, cardiovascular or musculoskeletal diseases; (2) previously participation in any exercise-training program in the last 2 years before participating in this study; and (3) current smokers.

Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Wellington Pereira dos Santos Yamaguti, University of São Paulo Identifier: NCT01223807    
Other Study ID Numbers: uspferd
First Posted: October 19, 2010    Key Record Dates
Last Update Posted: October 19, 2010
Last Verified: June 2008
Keywords provided by University of Sao Paulo:
COPD, diaphragm, rehabilitation
Additional relevant MeSH terms:
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Respiratory Aspiration
Respiration Disorders
Respiratory Tract Diseases
Pathologic Processes