High-intensity inspiratory protocol increases heart rate variability in myocardial revascularization patients

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dc.contributor.authorRossi Caruso, Flavia Cristina
dc.contributor.authorSimoes, Rodrigo Polaquini
dc.contributor.authorReis, Michel Silva
dc.contributor.authorGuizilini, Solange [UNIFESP]
dc.contributor.authordos Santos Alves, Vera Lucia
dc.contributor.authorPapa, Valeria
dc.contributor.authorArena, Ross
dc.contributor.authorBorghi-Silva, Audrey
dc.date.accessioned2019-01-21T10:29:39Z
dc.date.available2019-01-21T10:29:39Z
dc.date.issued2016
dc.description.abstractObjective: To evaluate heart rate variability during an inspiratory muscle endurance protocol at three different load levels [30%, 60% and 80% of maximal inspiratory pressure], in patients who had previously undergone coronary artery bypass grafting. Methods: Nineteen late postoperative myocardial revascularization patients participating in a cardiovascular rehabilitation program were studied. Maximal inspiratory pressure maneuvers were performed. An inspiratory muscle endurance protocol at 30%, 60% and 80% of maximal inspiratory pressure was applied for four minutes each, in random order. Heart rate and RR intervals were recorded and heart rate variability was analyzed by time (RMSSD-the mean of the standard deviations for all R-R intervals, and RMSM-root-mean square differences of successive R-R intervals) and frequency domains indices (high and low frequency) in normalized units. ANOVA for repeated measurements was used to compare heart rate variability indices and Student t-test was used to compare the maximal inspiratory pressure and maximal expiratory pressure values. Results: Heart rate increased during performance of maximal respiratory pressures maneuvers, and the maximal inspiratory pressure and maximal expiratory pressure mean values were significantly lower than predicted values (P<0.05). RMSSD increased significantly at 80% in relation to rest and 30% of maximal inspiratory pressure and RMSM decreased at 30% and 60% of maximal inspiratory pressure in relation to rest (P<0.05). Additionally, there was significant and progressive decrease in low frequency and increase in high frequency at 30%, 60% and 80% of maximal inspiratory pressure in relation to the resting condition. Conclusion: These results suggest that respiratory muscle training at high intensities can promote greater parasympathetic activity and it may confer important benefits during a rehabilitation program in post-coronary artery bypass grafting.en
dc.description.affiliationLaboratory of Cardiopulmonary Physiotherapy at Federal University of São Carlos (UFSCar), São Carlos, SP, Brazil
dc.description.affiliationDepartment of Physiotherapy at Faculty of Medicine at Federal University of Rio de Janeiro (FMUFRJ), Rio de Janeiro, RJ, Brazil
dc.description.affiliationDepartment of Sciences of Human Movement at Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
dc.description.affiliationFaculty of Medical Sciences at Santa Casa de São Paulo (FCMSCSP), São Paulo, SP, Brazil
dc.description.affiliationHospital São Francisco of Ribeirão Preto (SF), Ribeirão Preto, SP, Brazil
dc.description.affiliationDepartment of Physical Therapy and Integrative Physiology Laboratory, College of Applied Health Sciences, University of Illinois Chicago, Chicago, IL, USA
dc.description.affiliationUnifespDepartment of Sciences of Human Movement at Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFAPESP [2009-01842-0]
dc.description.sponsorshipIDFAPESP: 2009-01842-0
dc.format.extent38-44
dc.identifierhttp://dx.doi.org/10.5935/1678-9741.20160007
dc.identifier.citationBrazilian Journal Of Cardiovascular Surgery. Sao paulo sp, v. 31, n. 1, p. 38-44, 2016.
dc.identifier.doi10.5935/1678-9741.20160007
dc.identifier.fileS0102-76382016000100038.pdf
dc.identifier.issn0102-7638
dc.identifier.scieloS0102-76382016000100038
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/49311
dc.identifier.wosWOS:000390088400008
dc.language.isoeng
dc.publisherHospital Clinicas, Univ Sao Paulo
dc.relation.ispartofBrazilian Journal Of Cardiovascular Surgery
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectAutonomic Nervous Systemen
dc.subjectRespiratory Musclesen
dc.subjectHeart Rateen
dc.subjectPhysical Therapy Modalitiesen
dc.subjectCoronary Artery BypassObstructive Pulmonary-Diseaseen
dc.subjectBypass Graft-Surgeryen
dc.subjectCardiovascular-Diseaseen
dc.subjectRespiratory Movementsen
dc.subjectAutonomic Functionen
dc.subjectCardiac-Surgeryen
dc.subjectCabg Surgeryen
dc.subjectFailureen
dc.subjectPhysiotherapyen
dc.subjectComplicationsen
dc.titleHigh-intensity inspiratory protocol increases heart rate variability in myocardial revascularization patientsen
dc.typeinfo:eu-repo/semantics/article
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