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Inspiratory muscle training improves clinically relevant outcomes, most consistently maximum inspiratory pressure, as well as exercise capacity and dyspnea, across various chronic respiratory diseases. Novelty: ClaimNovelty.SYNTHESIS. Consensus alignment: ConsensusAlignment.NEUTRAL.

May 21, 2025Frontiers in Sports and Active Living14 citationsOpen Access

Effectiveness of inspiratory muscle training in patients with a chronic respiratory disease: an overview of systematic reviews

RTRodrigo Torres‐CastroUniversidad de Santiago de Chile SCSaúl Caicedo-TrujilloUniversidad Autónoma de Chile EGElena Gimeno‐SantosApple (Israel)

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Abstract

Introduction There has been inconclusive findings regarding the effectiveness of inspiratory muscle training (IMT) in chronic respiratory diseases (CRDs). Our objective was to determine the effectiveness of IMT on exercise tolerance, maximum respiratory pressure, lung function, symptoms and quality of life in different CRDs. Methods We conducted an overview of systematic reviews (SRs) in adults with CRDs who underwent IMT. We reviewed five databases in March 2025. We chose the most comprehensive SRs to report on the analysed outcomes. Results Twenty-three SRs were included. In chronic obstructive pulmonary disease (COPD), IMT increased the six-minute walk distance (6MWD) by 35.7 m (95% CI 25.7, 45.7), maximum inspiratory pressure (MIP) by 10.9 cmH 2 O (95% CI 8.0, 13.9). In asthma, IMT increased the forced expiratory volume in the first second (FEV 1 ) by 3.3%pred (95% CI 1.4, 5.1), forced vital capacity (FVC) by 4.1%pred (95% CI 1.0, 7.3), MIP by 21.9 cmH 2 O (95% CI 15.0, 28.8), and dyspnoea was reduced (standard mean difference −0.8, 95% CI −1.3,−0.2). In obstructive sleep apnoea (OSA), IMT increased MIP by 29.6 cmH 2 O (95% CI 6.0, 53.1). In pulmonary hypertension (PH), IMT increased 6MWD by 39.0 m (95% CI 20.7, 57.4), MIP in 21.2 cmH 2 O (95% CI 11.3, 31.1), maximum expiratory pressure by 14.4 cmH 2 O (95% CI 6.9, 21.9), and dyspnoea was reduced by 0.5 (95% CI 0.1, 0.9) in modified Medical Research Council scale. In lung resection (LR), IMT increased MIP by 8.1 cmH 2 O (95% CI 1.3, 14.9). In bronchiectasis, IMT increased MIP by 6.1 cmH 2 O (95% CI 1.4, 10.8). Overall, the most consistent effect of IMT across different CRDs was an increase in MIP. Conclusion IMT improved several clinically relevant outcomes, including MIP, exercise capacity, and dyspnoea in different CRDs. However, the limited evidence for certain outcomes and populations highlights the need for further high-quality studies.

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Torres‐Castro et al. (Wed,) studied this question.

synapsesocial.com/papers/6a22aee3a58d8b2b280e0d29 https://doi.org/https://doi.org/10.3389/fspor.2025.1549652

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