Body position influences the maximum inspiratory and expiratory mouth pressures of young healthy subjects

Costa, Rui; Almeida, Nádia Maria Girão Saraiva de; Ribeiro, Fernando

doi:10.1016/j.physio.2014.08.002

Cited by 26 publications

(36 citation statements)

References 9 publications

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“…MIP and MEP are higher in the sitting position than in the supine and 45° semi-upright positions [32]. Previous studies measured respiratory strength with the trunk fixed to a specific posture, which, in turn, limited the thoracic mobility and made the role of the diaphragm more promwww.e-arm.org inent [33][34][35]. In this study, we measured posture when the respiratory strength was at the maximum, rather than measuring respiratory strength according to posture; thus, there is a limitation in comparing our results with those of previous studies.…”

Section: Discussionmentioning

confidence: 99%

Differences of Spinal Curvature, Thoracic Mobility, and Respiratory Strength Between Chronic Neck Pain Patients and People Without Cervical Pain

et al. 2020

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Objective To investigate the differences of spinal curvature, thoracic sagittal mobility, and respiratory strength between patients with chronic neck pain (CNP) and people without cervical pain, and to determine the correlation between respiratory strength and thoracic mobility in CNP patients.Methods A total of 78 participants were finally included in this study, of whom 30 had no cervical pain and 48 had CNP. The Neck Disability Index (NDI), cervical lordotic curvature, thoracic kyphotic curvature, thoracic sagittal range of motion (ROM), maximal inspiratory pressure (MIP), and maximal expiratory pressure (MEP) were measured and analyzed.Results In males, thoracic sagittal ROMMEP-MIP and MEP showed a significant difference between the no cervical pain group and the CNP group. In females, thoracic kyphotic curvature, thoracic sagittal ROMMEP-MIP, MIP, and MEP were significantly different between the no cervical pain group and the CNP group. Thoracic kyphotic curvature was significantly correlated with MEP and MIP in all population groups, and significantly correlated with NDI in the female group. Thoracic sagittal ROMMEP-MIP had a significant linear relationship with NDI, MEP, and MIP in all population groups.Conclusion The thoracic mobility during forced respiration was reduced in patients with CNP and was correlated with respiratory strength. Changes in the biomechanics of the cervicothoracic spine and rib cage due to CNP may contribute to impairment of respiratory strength.

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Section: Discussionmentioning

confidence: 99%

Differences of Spinal Curvature, Thoracic Mobility, and Respiratory Strength Between Chronic Neck Pain Patients and People Without Cervical Pain

et al. 2020

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“…MIP was measured in the sitting position to determine overload of the inspiratory muscles, but during echocardiography the participants were in the left semi-lateral position. Studies show that body position influences inspiratory muscle strength in both young healthy subjects46 and patients with COPD 47. Thus, the 30% loading of the MIP used during the echocardiographic examination may have been overestimated relative to that which would be assessed in the sitting position.…”

Section: Discussionmentioning

confidence: 99%

Positive end-expiratory pressure attenuates hemodynamic effects induced by an overload of inspiratory muscles in patients with COPD

Schaper-Magalhães¹,

Pinho²,

Capuruço³

et al. 2017

COPD

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BackgroundInspiratory muscle training (IMT) using a Threshold® device is commonly used to improve the strength and endurance of inspiratory muscles. However, the effect of IMT, alone or with positive end-expiratory pressure (PEEP), on hemodynamic parameters in patients with chronic obstructive pulmonary disease (COPD) remains unknown.ObjectiveTo assess the effects of an overload of inspiratory muscles using IMT fixed at 30% of the maximal inspiratory pressure (MIP), and IMT associated with 5 cmH2O of PEEP (IMT + PEEP), on the echocardiographic parameters in healthy subjects and patients with COPD.MethodsTwenty patients with COPD (forced expiratory volume in 1 second 53.19±24.71 pred%) and 15 age-matched healthy volunteers were evaluated using spirometry, MIP, the COPD assessment test (CAT), and the modified Medical Research Council (mMRC) dyspnea scale. The E- (fast-filling phase) and A- (atrial contraction phase) waves were evaluated at the tricuspid and mitral valves during inspiration and expiration in the following sequence: at basal conditions, using IMT, and using IMT + PEEP.ResultsPatients with COPD had reduced MIPs versus the control group. Ten patients had CAT scores <10 and 12 patients had mMRC scores <2. E-wave values at the mitral valve were significantly decreased with IMT during the inspiratory phase in both groups. These effects were normalized with IMT + PEEP. During the expiratory phase, use of IMT + PEEP normalized the reduction in E-wave values in the COPD group. During inspiration at the tricuspid valve, reduction in E-wave values during IMT was normalized by IMT + PEEP in COPD group. During the expiratory phase, the value of the E-waves was significantly reduced with overload of the inspiratory muscles in both groups, and these effects were normalized with IMT + PEEP. A-waves did not change under any conditions.ConclusionAcute hemodynamic effects induced by overloading of the inspiratory muscles were attenuated and/or reversed by the addition of PEEP in COPD patients.

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“…Measurements were taken at the end of a complete inspiration and expiration cycle. Measurements were taken with the participants in standing position (Costa, Almeida, & Ribeiro, 2015). The physiotherapists placed the "0" of the cloth tape measure on the appropriate vertebrae.…”

Section: Chest Wall Measurementmentioning

confidence: 99%

Untitled

2019

JPES

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Impact of COPD is the presence of chest wall disorders and thoracic mobility disorders, it is necessary for physiotherapists to provide breathing exercises to patients with COPD. Respiratory training methods used in this study are maximal inspiratory exercise (MIE) and pursed-lip breathing (PLB) for chest wall expansion in patients with chronic obstructive pulmonary disease (COPD). This study aims to identify the difference between MIE and PLB in 30 patients with COPD. From the current observations performed in 12 weeks with 3 times per week dosing, it was found that each MIE and PLB group an increased chest wall expansion after treatment. The main results showed that the values of MIE (3.1 ± 0.57) and PLB (2.1 ± 0.72) differed significantly after treatment. The value of MIE was higher than PLB's. This value is value of inspiration and expiration during the breathing process taken before and after treatment. This proves that MIE is better for increasing chest wall expansion in patients with COPD.

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Body position influences the maximum inspiratory and expiratory mouth pressures of young healthy subjects

Cited by 26 publications

References 9 publications

Differences of Spinal Curvature, Thoracic Mobility, and Respiratory Strength Between Chronic Neck Pain Patients and People Without Cervical Pain

Differences of Spinal Curvature, Thoracic Mobility, and Respiratory Strength Between Chronic Neck Pain Patients and People Without Cervical Pain

Positive end-expiratory pressure attenuates hemodynamic effects induced by an overload of inspiratory muscles in patients with COPD

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