Higuchi Fractal Analysis of Heart Rate Variability is Sensitive during Recovery from Exercise in Physically Active Men

Detalhes bibliográficos
Autor(a) principal: Gomes, Rayana L.
Data de Publicação: 2017
Outros Autores: Vanderlei, Luiz Carlos M., Garner, David M., Vanderlei, Franciele M., Valenti, Vitor E.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.5935/medicalexpress.2017.03.02
http://hdl.handle.net/11449/158067
Resumo: OBJECTIVE: Nonlinear techniques to assess heart rate variability (HRV) have received much recent attention. We aimed to evaluate nonlinear HRV responses during recovery from exercise through the novel algorithm Higuchi Fractal Dimension.METHOD: We examined 35 healthy male volunteers aged between 18 and 35 years old. For the training of exercise intensity we used 60% of Vmax determined through a progressive test using the Conconi threshold. HRV was analyzed 10 minutes before and 10 minutes after exercise. We analyzed the geometric indices of HRV (SD1, a measure of short-term HRV and SD2, a measure of long-term HRV) and applied the Higuchi Fractal Dimension to RR intervals.RESULTS: During recovery from exercise the Poincaré plot indices SD1 and SD1/SD2 decreased while SD2 and SD2/SD1 increased (p<0.0001) compared to control at rest. All parameters of Higuchi Fractal Dimension analysis were lowered after exercise compared to control at rest (p<0.0001).CONCLUSION: Physical exercise acutely decreased the chaotic behavior of HRV as measured through the Higuchi Fractal Dimension analysis. Physiologically, this indicates that we detected complex changes in HRV immediately after exercise.
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spelling Higuchi Fractal Analysis of Heart Rate Variability is Sensitive during Recovery from Exercise in Physically Active MenANÁLISE DA VARIABILIDADE DA FREQUÊNCIA CARDÍACA PELO MÉTODO DA DIMENSÃO FRACTAL DE HIGUCHI É SENSÍVEL DURANTE A RECUPERAÇÃO APÓS EXERCÍCIO EM HOMENS FISICAMENTE ATIVOSCardiovascular systemAutonomic Nervous SystemPhysical ExerciseNonlinear DynamicsHiguchi Fractal DimensionSistema cardiovascularSistema nervoso autônomoExercício físicoDinâmica não-linearDimensão do Fractal de HiguchiOBJECTIVE: Nonlinear techniques to assess heart rate variability (HRV) have received much recent attention. We aimed to evaluate nonlinear HRV responses during recovery from exercise through the novel algorithm Higuchi Fractal Dimension.METHOD: We examined 35 healthy male volunteers aged between 18 and 35 years old. For the training of exercise intensity we used 60% of Vmax determined through a progressive test using the Conconi threshold. HRV was analyzed 10 minutes before and 10 minutes after exercise. We analyzed the geometric indices of HRV (SD1, a measure of short-term HRV and SD2, a measure of long-term HRV) and applied the Higuchi Fractal Dimension to RR intervals.RESULTS: During recovery from exercise the Poincaré plot indices SD1 and SD1/SD2 decreased while SD2 and SD2/SD1 increased (p<0.0001) compared to control at rest. All parameters of Higuchi Fractal Dimension analysis were lowered after exercise compared to control at rest (p<0.0001).CONCLUSION: Physical exercise acutely decreased the chaotic behavior of HRV as measured through the Higuchi Fractal Dimension analysis. Physiologically, this indicates that we detected complex changes in HRV immediately after exercise.OBJETIVO: Métodos não-lineares para avaliar a variabilidade da freqüência cardíaca (VFC) têm recebido muita atenção recente. Nosso objetivo é analisar as respostas não-lineares da VFC durante a recuperação do exercício através do novo algoritmo da análise fractal da dimensão de Higuchi.MÉTODO: Foram examinados 35 voluntários saudáveis, com idade entre 18 e 35 anos. Para o treinamento de intensidade de exercício utilizamos 60% de Vmax determinado através de um teste progressivo utilizando o limiar de Conconi. A VFC foi analisada 10 minutos antes e 10 minutos após o exercício. Analisamos os índices geométricos de VFC (SD1, uma medida de VFC em curto prazo e SD2, uma medida de VFC em longo prazo) e aplicamos a Dimensão Fractal de Higuchi aos intervalos RR.RESULTADOS: Durante a recuperação do exercício, os índices de plot de Poincaré SD1 e SD1/SD2 diminuíram, enquanto que SD2 e SD2/SD1 aumentaram (p <0,0001) em relação ao repouso. Todos os parâmetros da análise da Dimensão Fractal de Higuchi foram reduzidos após o exercício em comparação com o controle em repouso (p <0,0001).CONCLUSÃO: O exercício físico diminuiu agudamente o comportamento complexo da VFC, conforme medido pela análise da Dimensão Fractal de Higuchi. Fisiologicamente, isso indica que detectamos alterações na complexidade da VFC imediatamente após o exercício.UNESP Faculdade Ciências e Tecnologia Programa de Pós-Graduação em FisioterapiaOxford Brookes University Faculty of Health and Life Sciences Department of Biological and Medical SciencesUNESP Faculdade Ciências e Tecnologia Programa de Pós-Graduação em FisioterapiaMavera Edições Técnicas e Científicas LtdaUniversidade Estadual Paulista (Unesp)Oxford Brookes University Faculty of Health and Life Sciences Department of Biological and Medical SciencesGomes, Rayana L.Vanderlei, Luiz Carlos M.Garner, David M.Vanderlei, Franciele M.Valenti, Vitor E.2018-11-12T17:28:10Z2018-11-12T17:28:10Z2017-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article-application/pdfhttp://dx.doi.org/10.5935/medicalexpress.2017.03.02MedicalExpress. Mavera Edições Técnicas e Científicas Ltda, v. 4, n. 3, p. -, 2017.2358-0429http://hdl.handle.net/11449/15806710.5935/medicalexpress.2017.03.02S2358-04292017000300002S2358-04292017000300002.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMedicalExpressinfo:eu-repo/semantics/openAccess2023-12-03T06:11:13Zoai:repositorio.unesp.br:11449/158067Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-03T06:11:13Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Higuchi Fractal Analysis of Heart Rate Variability is Sensitive during Recovery from Exercise in Physically Active Men
ANÁLISE DA VARIABILIDADE DA FREQUÊNCIA CARDÍACA PELO MÉTODO DA DIMENSÃO FRACTAL DE HIGUCHI É SENSÍVEL DURANTE A RECUPERAÇÃO APÓS EXERCÍCIO EM HOMENS FISICAMENTE ATIVOS
title Higuchi Fractal Analysis of Heart Rate Variability is Sensitive during Recovery from Exercise in Physically Active Men
spellingShingle Higuchi Fractal Analysis of Heart Rate Variability is Sensitive during Recovery from Exercise in Physically Active Men
Gomes, Rayana L.
Cardiovascular system
Autonomic Nervous System
Physical Exercise
Nonlinear Dynamics
Higuchi Fractal Dimension
Sistema cardiovascular
Sistema nervoso autônomo
Exercício físico
Dinâmica não-linear
Dimensão do Fractal de Higuchi
title_short Higuchi Fractal Analysis of Heart Rate Variability is Sensitive during Recovery from Exercise in Physically Active Men
title_full Higuchi Fractal Analysis of Heart Rate Variability is Sensitive during Recovery from Exercise in Physically Active Men
title_fullStr Higuchi Fractal Analysis of Heart Rate Variability is Sensitive during Recovery from Exercise in Physically Active Men
title_full_unstemmed Higuchi Fractal Analysis of Heart Rate Variability is Sensitive during Recovery from Exercise in Physically Active Men
title_sort Higuchi Fractal Analysis of Heart Rate Variability is Sensitive during Recovery from Exercise in Physically Active Men
author Gomes, Rayana L.
author_facet Gomes, Rayana L.
Vanderlei, Luiz Carlos M.
Garner, David M.
Vanderlei, Franciele M.
Valenti, Vitor E.
author_role author
author2 Vanderlei, Luiz Carlos M.
Garner, David M.
Vanderlei, Franciele M.
Valenti, Vitor E.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Oxford Brookes University Faculty of Health and Life Sciences Department of Biological and Medical Sciences
dc.contributor.author.fl_str_mv Gomes, Rayana L.
Vanderlei, Luiz Carlos M.
Garner, David M.
Vanderlei, Franciele M.
Valenti, Vitor E.
dc.subject.por.fl_str_mv Cardiovascular system
Autonomic Nervous System
Physical Exercise
Nonlinear Dynamics
Higuchi Fractal Dimension
Sistema cardiovascular
Sistema nervoso autônomo
Exercício físico
Dinâmica não-linear
Dimensão do Fractal de Higuchi
topic Cardiovascular system
Autonomic Nervous System
Physical Exercise
Nonlinear Dynamics
Higuchi Fractal Dimension
Sistema cardiovascular
Sistema nervoso autônomo
Exercício físico
Dinâmica não-linear
Dimensão do Fractal de Higuchi
description OBJECTIVE: Nonlinear techniques to assess heart rate variability (HRV) have received much recent attention. We aimed to evaluate nonlinear HRV responses during recovery from exercise through the novel algorithm Higuchi Fractal Dimension.METHOD: We examined 35 healthy male volunteers aged between 18 and 35 years old. For the training of exercise intensity we used 60% of Vmax determined through a progressive test using the Conconi threshold. HRV was analyzed 10 minutes before and 10 minutes after exercise. We analyzed the geometric indices of HRV (SD1, a measure of short-term HRV and SD2, a measure of long-term HRV) and applied the Higuchi Fractal Dimension to RR intervals.RESULTS: During recovery from exercise the Poincaré plot indices SD1 and SD1/SD2 decreased while SD2 and SD2/SD1 increased (p<0.0001) compared to control at rest. All parameters of Higuchi Fractal Dimension analysis were lowered after exercise compared to control at rest (p<0.0001).CONCLUSION: Physical exercise acutely decreased the chaotic behavior of HRV as measured through the Higuchi Fractal Dimension analysis. Physiologically, this indicates that we detected complex changes in HRV immediately after exercise.
publishDate 2017
dc.date.none.fl_str_mv 2017-06-01
2018-11-12T17:28:10Z
2018-11-12T17:28:10Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.5935/medicalexpress.2017.03.02
MedicalExpress. Mavera Edições Técnicas e Científicas Ltda, v. 4, n. 3, p. -, 2017.
2358-0429
http://hdl.handle.net/11449/158067
10.5935/medicalexpress.2017.03.02
S2358-04292017000300002
S2358-04292017000300002.pdf
url http://dx.doi.org/10.5935/medicalexpress.2017.03.02
http://hdl.handle.net/11449/158067
identifier_str_mv MedicalExpress. Mavera Edições Técnicas e Científicas Ltda, v. 4, n. 3, p. -, 2017.
2358-0429
10.5935/medicalexpress.2017.03.02
S2358-04292017000300002
S2358-04292017000300002.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv MedicalExpress
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv -
application/pdf
dc.publisher.none.fl_str_mv Mavera Edições Técnicas e Científicas Ltda
publisher.none.fl_str_mv Mavera Edições Técnicas e Científicas Ltda
dc.source.none.fl_str_mv SciELO
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1799965152032849920

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