Maximal inspiratory pressure is influenced by intensity of the warm-up protocol

Arend, Mati; Kivastik, Jana; Mäestu, Jarek

doi:10.1016/j.resp.2016.05.002

Cited by 12 publications

(20 citation statements)

References 31 publications

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“…4,12 However, it seems that the learning effect is the largest determining factor for the correct attainment of true maximum values of P Imax . [10][11][12] It has been demonstrated that more than three maneuvers are necessary to reach reliable P Imax and that an inspiratory muscle warm-up could reduce the learning effect. 10,11 Likewise, the present study demonstrated that these same conditions can affect S-Index assessment.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, it has not been evaluated whether an inspiratory muscle warm-up has any effect on the S-Index assessment, as has been demonstrated with P Imax . 10,11 Most likely, the variability that relates to the number of maneuvers performed can result in an underestimation of the S-Index, as has been previously described in P Imax assessment. 12 The proper evaluation of the S-Index may uncover valuable information about inspiratory muscle capacity and its impact on overall performance for patients, who ranged from those with disabilities to athletes.…”

Section: Introductionmentioning

confidence: 91%

“…This level of load has been indicated to approximate the upper loading limit before fatigue of the diaphragm occurs 19 and had previously demonstrated significant results with P Imax . 10,11 A previous study carried out 2 sets of 30 breaths; however, the investigators had wanted to assess P Imax . 10 Because we had not found any study that used inspiratory warm-up for assessing its impact on the S-Index, we developed our own warm-up protocol.…”

Section: Inspiratory Muscle Warm-upmentioning

confidence: 99%

“…10,11 A previous study carried out 2 sets of 30 breaths; however, the investigators had wanted to assess P Imax . 10 Because we had not found any study that used inspiratory warm-up for assessing its impact on the S-Index, we developed our own warm-up protocol. Inspiratory warm-up was driven by pace (time between inspirations was 4.5 s) with the subjects in a seated position and wearing a nose clip.…”

Section: Inspiratory Muscle Warm-upmentioning

confidence: 99%

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Assessment of Maximum Dynamic Inspiratory Pressure

et al. 2018

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 91%

Section: Inspiratory Muscle Warm-upmentioning

confidence: 99%

Section: Inspiratory Muscle Warm-upmentioning

confidence: 99%

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Assessment of Maximum Dynamic Inspiratory Pressure

et al. 2018

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“…Sampol et al [17] (2003) observed that high intrathoracic negative pressures generate increased sympathetic activity by increasing the incidence of aortic dissection in individuals with obstructive sleep apnea and Marfan syndrome. Also, some studies showed the need to perform a previous familiarization because MIP maneuver is volitional and not very intuitive [7,18,20,21] . Thus, in addition to the evaluation rate plus the familiarization, it can be inferred an increase in cardiovascular risk for the use of the MIP maneuver in these populations, which would be minimized through IMS evaluation in a dynamic way.…”

Section: Resultsmentioning

confidence: 99%

Concurrent Validity of the Static and Dynamic Measures of Inspiratory Muscle Strength: Comparison between Maximal Inspiratory Pressure and S-Index

Areias

Santiago

Teixeira

et al. 2020

Braz J Cardiovasc Surg

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Objective: To verify the concurrent validity between the inspiratory muscle strength (IMS) values obtained in static (maximal inspiratory pressure [MIP]) and dynamic (S-Index) assessments.Methods: Healthy individuals were submitted to two periods of evaluation: i) MIP, static maneuver to obtain IMS, determined by the Mueller's maneuver from residual volume (RV) until total lung capacity (TLC); ii) and S-Index, inspiration against open airway starting from RV until TLC. Both measures were performed by the same evaluator and the subjects received the same instructions. Isolated maneuvers with differences < 10% were considered as reproducible measures.Results: Data from 45 subjects (21 males) were analyzed and that showed statistical difference between MIP and S-Index values (133.5 ± 33.3 and 125.6 ± 32.2 in cmH2O, respectively), with P=0.014. Linear regression showed r 2 =0.54 and S-Index prediction formula = 39.8+(0.75×MIP). Pearson's correlation demonstrated a strong and significant association between the measures with r=0.74. The measurements showed good concordance evidenced by the Bland-Altman test.Conclusion: S-Index and MIP do not present similar values since they are evaluations of different events of the muscular contraction. However, they have a strong correlation and good agreement, which indicate that both are able to evaluate the IMS of healthy individuals.

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Effects of inspiratory muscle training on respiratory muscle strength, lung function, functional capacity and cardiac autonomic function in Parkinson's disease: Randomized controlled clinical trial protocol

Ferro

Basso-Vanelli

Mello

et al. 2019

Physiotherapy Res Intl

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Background Individuals with Parkinson's disease (PD), in addition to motor impairment, may evolve with respiratory and autonomic nervous system disorders. Currently, there are few studies with emphasis on muscle and pulmonary dysfunction and that verify the benefits of inspiratory muscle training (IMT) in this population. Aim The aim of this study was to evaluate whether IMT is effective for the improvement of respiratory muscle strength, lung function, thoracic mobility, functional capacity and cardiac autonomic function in PD. Methods A randomized and controlled trial will be conducted with 26 participants with idiopathic PD, with aged between 50 and 65 years, in the Stages I to III by the Modified Hoehn and Yahr Scale. Respiratory muscle strength will be performed by manovacuometry and lung function by spirometry. Functional capacity will be evaluated by the 6‐min walk test and autonomic cardiac function by heart rate variability. In addition, thoracic mobility measurement will also be performed. After the evaluations, these participants will be randomly assigned to two groups: the IMT group with Powerbreathe®, which will perform the eight series of 2 min each, with 1 min of rest between them, totaling 30 min, at 60% of the maximum inspiratory pressure and the control group, who will perform the same training protocol but with the load maintained at 9 cmH2O. All participants will be submitted to the same motor training protocol. Conclusion It is expected that IMT increases the inspiratory muscle strength, contributing to the improved expiratory muscle strength, lung function, thoracic mobility, functional capacity and cardiac autonomic function in individuals with mild to moderate PD.

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Maximal inspiratory pressure is influenced by intensity of the warm-up protocol

Cited by 12 publications

References 31 publications

Assessment of Maximum Dynamic Inspiratory Pressure

Assessment of Maximum Dynamic Inspiratory Pressure

Concurrent Validity of the Static and Dynamic Measures of Inspiratory Muscle Strength: Comparison between Maximal Inspiratory Pressure and S-Index

Effects of inspiratory muscle training on respiratory muscle strength, lung function, functional capacity and cardiac autonomic function in Parkinson's disease: Randomized controlled clinical trial protocol

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