A single dose of dark chocolate increases parasympathetic modulation and heart rate variability in healthy subjects

Detalhes bibliográficos
Autor(a) principal: Machado DUARTE, Ana Amélia
Data de Publicação: 2023
Outros Autores: MOSTARDA, Cristiano, IRIGOYEN, Maria Claudia, RIGATTO, Katya
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista de Nutrição
Texto Completo: https://periodicos.puc-campinas.edu.br/nutricao/article/view/8129
Resumo: ObjectiveThe aim of this study was to investigate the acute effect of a single dose of dark chocolate (70% cocoa) on blood pressure and heart rate variability. MethodsThirty-one healthy subjects (aged 18-25 years; both sexes) were divided into two groups: 10 subjects in the white chocolate (7.4 g) group and 21 in the dark chocolate (10 g) group; measurements were performed at the university’s physiology lab. An electrocardiogram measured the sympathovagal balance by spectral and symbolic analysis. ResultsA single dose of dark chocolate significantly reduced systolic blood pressure and heart rate. After consuming 10 g of dark chocolate, significant increases were observed for heart rate variability, standard deviation of RR intervals standard deviation of all NN intervals, square root of the mean squared differences between adjacentnormal RR intervals root mean square of successive differences, and an increase in the high frequency component in absolute values, representing the parasympathetic modulation. ConclusionIn conclusion the importance of our results lies in the magnitude of the response provoked by a single dose of cocoa. Just 10 g of cocoa triggered a significant increase in parasympathetic modulation and heart rate variability. These combined effects can potentially increase life expectancy because a reduction in heart rate variability is associated with several cardiovascular diseases and higher mortality. 
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spelling A single dose of dark chocolate increases parasympathetic modulation and heart rate variability in healthy subjectsUma única dose de chocolate amargo aumenta a modulação parassimpática e a variabilidade da frequência cardíaca em indivíduos saudáveisAutonomic nervous systemCocoaFlavonoidsSistema nervoso autônomoCacauFlavonoidesObjectiveThe aim of this study was to investigate the acute effect of a single dose of dark chocolate (70% cocoa) on blood pressure and heart rate variability. MethodsThirty-one healthy subjects (aged 18-25 years; both sexes) were divided into two groups: 10 subjects in the white chocolate (7.4 g) group and 21 in the dark chocolate (10 g) group; measurements were performed at the university’s physiology lab. An electrocardiogram measured the sympathovagal balance by spectral and symbolic analysis. ResultsA single dose of dark chocolate significantly reduced systolic blood pressure and heart rate. After consuming 10 g of dark chocolate, significant increases were observed for heart rate variability, standard deviation of RR intervals standard deviation of all NN intervals, square root of the mean squared differences between adjacentnormal RR intervals root mean square of successive differences, and an increase in the high frequency component in absolute values, representing the parasympathetic modulation. ConclusionIn conclusion the importance of our results lies in the magnitude of the response provoked by a single dose of cocoa. Just 10 g of cocoa triggered a significant increase in parasympathetic modulation and heart rate variability. These combined effects can potentially increase life expectancy because a reduction in heart rate variability is associated with several cardiovascular diseases and higher mortality. ObjetivoO objetivo deste estudo foi investigar o efeito agudo de uma única dose de chocolate amargo (70% cacau) sobre a pressão arterial e a variabilidade da frequência cardíaca. MétodosTrinta e um indivíduos saudáveis (com idade entre 18-25 anos; ambos os sexos) foram divididos em dois grupos: 10 indivíduos no grupo chocolate branco (7,4 g) e 21 no grupo chocolate amargo (10,0 g); as avaliações foram realizadas no laboratório de fisiologia da Universidade Federal de Ciências da Saúde de Porto Alegre. ResultadosO eletrocardiograma foi realizado para analisar o balanço simpatovagal através da análise espectral e simbólica. Uma única dose de chocolate amargo reduziu significativamente a pressão arterial sistólica e a frequência cardíaca. Depois de consumir 10 g de chocolate amargo, observou-se aumento significativo na variabilidade da frequência cardíaca, o desvio padrão dos intervalos, a raiz quadrada da média do quadrado das diferenças entre os intervalos RR normais adjacentes a raiz quadrada da média da soma dos quadrados das diferenças entre os intervalos NN normais adjacentes e um aumento na componente de alta frequência em valores absolutos, o que representa a modulação parassimpática. ConclusãoEm conclusão, a importância dos resultados aqui apresentados reside na magnitude da resposta provocada por uma dose única de cacau (10 g). Esta provocou um aumento significativo da modulação parassimpática e da variabilidade da frequência cardíaca no coração. Esses efeitos, quando combinados, podem, potencialmente, aumentar a esperança de vida, porque a redução da variabilidade da frequência cardíaca está associada a doenças cardiovasculares e maior mortalidade.Núcleo de Editoração – PUC-Campinas2023-03-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.puc-campinas.edu.br/nutricao/article/view/8129Brazilian Journal of Nutrition; Vol. 29 No. 6 (2016): Revista de NutriçãoRevista de Nutrição; Vol. 29 Núm. 6 (2016): Revista de NutriçãoRevista de Nutrição; v. 29 n. 6 (2016): Revista de Nutrição1678-9865reponame:Revista de Nutriçãoinstname:Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS)instacron:PUC_CAMPenghttps://periodicos.puc-campinas.edu.br/nutricao/article/view/8129/5639Copyright (c) 2023 Ana Amélia Machado DUARTE, Cristiano MOSTARDA, Maria Claudia IRIGOYEN, Katya RIGATTOhttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessMachado DUARTE, Ana Amélia MOSTARDA, Cristiano IRIGOYEN, Maria Claudia RIGATTO, Katya 2023-03-30T17:57:29Zoai:ojs.periodicos.puc-campinas.edu.br:article/8129Revistahttp://www.scielo.br/rnPRIhttps://periodicos.puc-campinas.edu.br/nutricao/oai||sbi.submissionrn@puc-campinas.edu.br1678-98651415-5273opendoar:2023-03-30T17:57:29Revista de Nutrição - Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS)false
dc.title.none.fl_str_mv A single dose of dark chocolate increases parasympathetic modulation and heart rate variability in healthy subjects
Uma única dose de chocolate amargo aumenta a modulação parassimpática e a variabilidade da frequência cardíaca em indivíduos saudáveis
title A single dose of dark chocolate increases parasympathetic modulation and heart rate variability in healthy subjects
spellingShingle A single dose of dark chocolate increases parasympathetic modulation and heart rate variability in healthy subjects
Machado DUARTE, Ana Amélia
Autonomic nervous system
Cocoa
Flavonoids
Sistema nervoso autônomo
Cacau
Flavonoides
title_short A single dose of dark chocolate increases parasympathetic modulation and heart rate variability in healthy subjects
title_full A single dose of dark chocolate increases parasympathetic modulation and heart rate variability in healthy subjects
title_fullStr A single dose of dark chocolate increases parasympathetic modulation and heart rate variability in healthy subjects
title_full_unstemmed A single dose of dark chocolate increases parasympathetic modulation and heart rate variability in healthy subjects
title_sort A single dose of dark chocolate increases parasympathetic modulation and heart rate variability in healthy subjects
author Machado DUARTE, Ana Amélia
author_facet Machado DUARTE, Ana Amélia
MOSTARDA, Cristiano
IRIGOYEN, Maria Claudia
RIGATTO, Katya
author_role author
author2 MOSTARDA, Cristiano
IRIGOYEN, Maria Claudia
RIGATTO, Katya
author2_role author
author
author
dc.contributor.author.fl_str_mv Machado DUARTE, Ana Amélia
MOSTARDA, Cristiano
IRIGOYEN, Maria Claudia
RIGATTO, Katya
dc.subject.por.fl_str_mv Autonomic nervous system
Cocoa
Flavonoids
Sistema nervoso autônomo
Cacau
Flavonoides
topic Autonomic nervous system
Cocoa
Flavonoids
Sistema nervoso autônomo
Cacau
Flavonoides
description ObjectiveThe aim of this study was to investigate the acute effect of a single dose of dark chocolate (70% cocoa) on blood pressure and heart rate variability. MethodsThirty-one healthy subjects (aged 18-25 years; both sexes) were divided into two groups: 10 subjects in the white chocolate (7.4 g) group and 21 in the dark chocolate (10 g) group; measurements were performed at the university’s physiology lab. An electrocardiogram measured the sympathovagal balance by spectral and symbolic analysis. ResultsA single dose of dark chocolate significantly reduced systolic blood pressure and heart rate. After consuming 10 g of dark chocolate, significant increases were observed for heart rate variability, standard deviation of RR intervals standard deviation of all NN intervals, square root of the mean squared differences between adjacentnormal RR intervals root mean square of successive differences, and an increase in the high frequency component in absolute values, representing the parasympathetic modulation. ConclusionIn conclusion the importance of our results lies in the magnitude of the response provoked by a single dose of cocoa. Just 10 g of cocoa triggered a significant increase in parasympathetic modulation and heart rate variability. These combined effects can potentially increase life expectancy because a reduction in heart rate variability is associated with several cardiovascular diseases and higher mortality. 
publishDate 2023
dc.date.none.fl_str_mv 2023-03-30
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.puc-campinas.edu.br/nutricao/article/view/8129
url https://periodicos.puc-campinas.edu.br/nutricao/article/view/8129
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://periodicos.puc-campinas.edu.br/nutricao/article/view/8129/5639
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Núcleo de Editoração – PUC-Campinas
publisher.none.fl_str_mv Núcleo de Editoração – PUC-Campinas
dc.source.none.fl_str_mv Brazilian Journal of Nutrition; Vol. 29 No. 6 (2016): Revista de Nutrição
Revista de Nutrição; Vol. 29 Núm. 6 (2016): Revista de Nutrição
Revista de Nutrição; v. 29 n. 6 (2016): Revista de Nutrição
1678-9865
reponame:Revista de Nutrição
instname:Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS)
instacron:PUC_CAMP
instname_str Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS)
instacron_str PUC_CAMP
institution PUC_CAMP
reponame_str Revista de Nutrição
collection Revista de Nutrição
repository.name.fl_str_mv Revista de Nutrição - Pontifícia Universidade Católica de Campinas (PUC-CAMPINAS)
repository.mail.fl_str_mv ||sbi.submissionrn@puc-campinas.edu.br
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