ArticleCanadian journal of respiratory therapy : CJRT = Revue canadienne de la therapie respiratoire : RCTR2025
Impact of respiratory muscle training on muscle strength, pulmonary function, symptoms, and quality of life in COPD.
Article in Canadian journal of respiratory therapy : CJRT = Revue canadienne de la therapie respiratoire : RCTR, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- Prediction models for dynamic respiratory muscle strength in COPD and asthma patients based on fixed-pressure inspiratory muscle performance.BMC pulmonary medicine · 2026Article
- Expiratory Muscle Strength Training in COPD Dysphagia Management: A Survey of Speech-Language Pathologists.Journal of clinical medicine · 2026Article
- The importance of quantifying training loads and applying exercise principles in respiratory muscle training studies.Canadian journal of respiratory therapy : CJRT = Revue canadienne de la therapie respiratoire : RCTR · 2025Article
- Response to "Letter to the Editor: The importance of quantifying training loads and applying exercise principles in respiratory muscle training studies".Canadian journal of respiratory therapy : CJRT = Revue canadienne de la therapie respiratoire : RCTR · 2025Article
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Authors and funding
4 authors.
Funding
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Abstract
Introduction: Chronic obstructive pulmonary disease (COPD) is characterized by respiratory muscle weakness, hyperinflation, and systemic inflammation, leading to impaired pulmonary function and quality of life. Respiratory muscle training (RMT) may strengthen the inspiratory and expiratory muscles, improve pulmonary function, reduce dyspnea, and enhance functional outcomes. This study assessed the impact of concurrent RMT on respiratory muscle strength, spirometry, dyspnea, and quality of life in patients with COPD. Materials and Methods: This was a single-cohort pre/post-intervention study initially recruiting 43 patients with COPD to participate in an 8-week RMT program using a threshold pressure device. Both inspiratory and expiratory training were performed using a PowerLung device with adjustable resistance. Training consisted of three sets of ten breaths twice daily for each mode, and participants were instructed to increase resistance incrementally when the load became easy. Assessments included spirometry, maximum inspiratory pressure (MIP), maximum expiratory pressure (MEP), COPD Assessment Test (CAT), Medical Research Council (MRC) Breathlessness Scale, and Airways Questionnaire 20 (AQ20). Data were collected at baseline and post-intervention and analyzed using paired Results: Twenty-seven participants completed the study. Statistically significant improvements were observed in MIP (mean increase 14.1 cm H₂O, Discussion: Concurrent RMT improves respiratory muscle strength and quality of life in patients with COPD, with the greatest benefits observed in advanced disease stages. Enhanced respiratory muscle efficiency may reduce dyspnea and promote exercise tolerance. Conclusion: RMT is a promising intervention for COPD management that offers improved respiratory muscle strength and quality of life. Future studies should explore the long-term effects and optimize protocols for broader implementation.
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