Abstract
Purpose
To determine clinical safety and cardiovascular, cardiac autonomic and inflammatory responses to a single session of inspiratory muscle training (IMT) in obstructive sleep apnea (OSA) subjects.
Methods
In a randomized controlled trial individuals of both sexes, aged between 30 and 70 years old with diagnosis of moderate to severe OSA were enrolled. Volunteers with OSA (n = 40) performed an IMT session with three sets of 30 repetitions with a 1-min interval between them. The IMT group (n = 20) used a load of 70% of the maximum inspiratory pressure (MIP), and the placebo group (n = 20) performed the IMT without load. Measurements of systolic blood pressure (SBP), diastolic blood pressure (DBP), heart rate (HR), heart rate variability (HRV), and inflammatory markers were performed pre, post-immediate and 1 h after the IMT session.
Results
No differences were shown in SBP, DBP, HRV, or inflammatory markers at any of the intervals analyzed. However, HR in the IMT group was lower 1 h after the IMT session compared to the pre-session values (p = 0002). HR was higher in the placebo group when comparing pre × post-immediate (p < 0.001). HR decreased after the first hour in relation to the pre (p < 0.001) and post-immediate (p < 0.001) values.
Conclusion
IMT sessions promote discreet hemodynamic, cardiac autonomic and inflammatory responses. Therefore, IMT is considered clinically safe and can be performed at home, guided but unsupervised, with lower cost and greater adherence to exercise program for subjects with OSA.
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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001
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Sílvia Thamilis Barbosa Pessoa Ferreira — acquisition, analysis and interpretation of data and drafting the manuscript
Juliana Baptista Teixeira and Thayse Neves Santos Silva — acquisition of data
Michelle Christiane da Silva Rabello, Virgínia Maria Barros de Lorena, and Breno Quintella Farah — analysis and/or interpretation of data
Maria do Socorro Brasileiro-Santos — revising the manuscript critically for important intellectual content
Anna Lima Jaguaribe de Lima — conception and design of study, analysis, and/or interpretation of data and revising the manuscript critically for important intellectual content. All the authors read and approved the manuscript.
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Ferreira, S.T.B.P., do Socorro Brasileiro-Santos, M., Teixeira, J.B. et al. Clinical safety and hemodynamic, cardiac autonomic and inflammatory responses to a single session of inspiratory muscle training in obstructive sleep apnea. Sleep Breath 26, 99–108 (2022). https://doi.org/10.1007/s11325-021-02364-6
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DOI: https://doi.org/10.1007/s11325-021-02364-6