Effects of Inspiratory Muscle Training in Patients With Bronchiectasis
The purpose of this study is to determine whether inspiratory muscle training could improve and/or prevent the deterioration of inspiratory muscle strength, clinical cardiopulmonary outcome, systemic immunologic responses and quality of life in patients with bronchiectasis.
|Study Design:||Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Single Blind (Investigator)
Primary Purpose: Treatment
|Official Title:||Effects of Inspiratory Muscle Training in Patients With Bronchiectasis|
- Evidence of clinically effectiveness with inspiratory muscle training [ Time Frame: 8 weeks ] [ Designated as safety issue: No ]
|Study Start Date:||January 2008|
|Study Completion Date:||March 2009|
|Primary Completion Date:||December 2008 (Final data collection date for primary outcome measure)|
No Intervention: Control
Experimental: Inspiratory muscle training
Other: Inspiratory muscle training
A pressure threshold device (Threshold® IMT HS730, RESPIRONICS Inc, Cedar Grove, NJ, USA) was used for the inspiratory muscle training program. The individualized training program was started at an intensity of 30% MIP, which was increased by 2 cmH2O each week, but the maximal intensity did not exceed 50% of MIP. Patients were encouraged to perform IMT for 30 minutes per day, at least 5 days a week for 8 weeks.
Other Name: Pulmonary Rehabilitation
Inspiratory muscle training is reportedly beneficial in patients with diverse chronic cardio-pulmonary diseases. It can increase inspiratory muscle strength and endurance, improves exercise capacity and quality of life (QOL), and decreases the perception of dyspnea (POD) for adults with stable chronic obstructive pulmonary disease (COPD). Though the pathophysiology in COPD and bronchiectasis are different, there are some similarities in clinical presentation. In COPD patients, lung hyperinflation induces functional weakness of the inspiratory muscle and increases elastic load to breathing and intrinsic positive end expiratory pressure. Patients with bronchiectasis shows reduced ratio of FEV1/FVC, reduced FEV1, and normal or slightly reduced FVC, which indicate that airways are blocked by mucus. However, there has been no study that used IMT as a training modality to determine its effect in bronchiectasis. The clinical relevance of increased respiratory muscle strength per se by IMT alone is unknown. This study tried to evaluate the feasibility and effectiveness of home-based threshold training and examined if the effects of IMT extends to clinical outcomes such as activities of daily living and QOL in bronchiectasis patients.
|Chang Gung Memorial Hospital-Kaohsiung Medical Center|
|Niaosung Shiang, Kaohsiung, Taiwan, 833|
|Principal Investigator:||Meng-Chih Lin, MD||Chang Gung Memorial Hospital-Kaohsiung Medical Center|