Efeito agudo da respira??o abdominal lenta sobre a atividade cerebral, respostas emocionais e cardiovasculares
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Universidade Federal do Rio Grande do Norte
2016
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Online Access: | http://repositorio.ufrn.br/handle/123456789/20070 |
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CNPQ::CIENCIAS DA SAUDE::EDUCACAO FISICA Atividade cerebral EEG Respira??o abdominal lenta sLORETA |
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CNPQ::CIENCIAS DA SAUDE::EDUCACAO FISICA Atividade cerebral EEG Respira??o abdominal lenta sLORETA Machado, Daniel Gomes da Silva Efeito agudo da respira??o abdominal lenta sobre a atividade cerebral, respostas emocionais e cardiovasculares |
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Previous issue date: 2015-02-13 === Introdu??o: A respira??o abdominal lenta (RAL) estimula o barorreflexo e gera a
arritmia respirat?ria sinusal, causando mudan?a positiva cardiovascular, emocional
e cerebral aguda e cr?nica. Entretanto, embora as pr?ticas meditativas recebam
aten??o crescente nos ?ltimos anos, n?o h? consenso acerca das mudan?as
neurofisiol?gicas subjacentes a elas, principalmente pela falta de informa??o
topogr?fica suficiente. Objetivo: Objetivamos analisar o efeito agudo da RAL
sobre a atividade cerebral, respostas emocionais e cardiovasculares em sujeitos
inexperientes em t?cnicas de medita??o. M?todos: Dezessete homens adultos
saud?veis foram avaliados em duas sess?es diferentes de modo rand?mico e
cruzado. Na condi??o experimental realizaram a RAL em 6 ciclos/minuto e na
ix
controle mantiveram sua taxa respirat?ria normal, ambas por 20 minutos. Avaliouse
antes e ap?s as respectivas sess?es a atividade cerebral com o
eletroencefalograma (EEG), ansiedade, humor, variabilidade da frequ?ncia
card?aca (VFC) e press?o arterial. O EEG foi analisado pelo sLORETA para
localiza??o das regi?es cerebrais que sofreram mudan?a. Resultados: O
sLORETA evidenciou uma redu??o na banda de frequ?ncia beta no giro frontal
(P<0,01) e c?rtex cingulado anterior (P<0,05) tanto durante quanto e ap?s a RAL
(P<0,05) comparada ao repouso, sem mudan?a na condi??o controle.
Adicionalmente, a ANOVA two-way com medidas repetidas mostrou que n?o
houve efeito na ansiedade (P>0,8) nem no humor (P>0,08). Houve uma melhora
na VFC (P<0,03), aumento do intervalo RR e redu??o da frequ?ncia card?aca ap?s
RAL, assim como aumento no SDNN, RMSSD, pNN50, no componente de baixa
frequ?ncia, raz?o LF/HF e pot?ncia total durante a mesma, sem altera??es na PAS
e PAD. Conclus?o: Conclu?mos que a RAL, mesmo sem altera??es
comportamentais, ? capaz de modificar a atividade cerebral em regi?es
associadas ao processamento emocional. Al?m disso, melhora a VFC sem
modificar a press?o arterial. === Introduction: Slow abdominal breathing (SAB) stimulates baroreflex and
generates respiratory sinus arrhythmia, changing cardiovascular, emotional and
cerebral systems acute and chronically. However, although meditative practices
have been receiving increasingly attention in the last years, there is no
agreement on the neurophysiological changes underlying them, mainly because
of the lack of topographical pieces of information. Purpose: We aimed to
analyze the acute effect of SAB on brain activity, emotional and cardiovascular
responses in untrained subjects in meditative techniques. Methods: Seventeen
healthy adults? men were assessed into two different sessions in a random and
crossed order. Into experimental session, they breathed in 6 cycles/minute and
in control session they kept breathing in normal rate, both for 20 minutes.
xi
Before, during, and after each session we assessed brain activity using
electroencephalography (EEG), anxiety, mood, heart rate variability (HRV) and
blood pressure. The sLORETA software was used to analyze EEG data for
source localization of brain areas in which activity was changed. Results: The
sLORETA showed that beta band frequency was reduced in frontal gyrus
(P<0.01) and anterior cingulate cortex (P<0.05) both during and after SAB
(P<0.05) compared to the moment before it. There was no change in brain
activity in control session. Additionally, a two-way repeated measures ANOVA
showed that there was no effect on anxiety (P>0.8) and mood (P>0.08). There
were improvements in HRV (P<0.03), with increased RR interval and decreased
HR after SAB, as well as increased SDNN, RMSSD, pNN50, low frequency,
LF/HF ratio, and total power during it, with no changes in SBP and DBP.
Conclusions: We conclude that SAB is able to change brain activity in areas
responsible for emotional processing, even without behavioral changes.
Furthermore, SAB improves HRV and does not change blood pressure in
normotensive. |
author2 |
69806217934 |
author_facet |
69806217934 Machado, Daniel Gomes da Silva |
author |
Machado, Daniel Gomes da Silva |
author_sort |
Machado, Daniel Gomes da Silva |
title |
Efeito agudo da respira??o abdominal lenta sobre a atividade cerebral, respostas emocionais e cardiovasculares |
title_short |
Efeito agudo da respira??o abdominal lenta sobre a atividade cerebral, respostas emocionais e cardiovasculares |
title_full |
Efeito agudo da respira??o abdominal lenta sobre a atividade cerebral, respostas emocionais e cardiovasculares |
title_fullStr |
Efeito agudo da respira??o abdominal lenta sobre a atividade cerebral, respostas emocionais e cardiovasculares |
title_full_unstemmed |
Efeito agudo da respira??o abdominal lenta sobre a atividade cerebral, respostas emocionais e cardiovasculares |
title_sort |
efeito agudo da respira??o abdominal lenta sobre a atividade cerebral, respostas emocionais e cardiovasculares |
publisher |
Universidade Federal do Rio Grande do Norte |
publishDate |
2016 |
url |
http://repositorio.ufrn.br/handle/123456789/20070 |
work_keys_str_mv |
AT machadodanielgomesdasilva efeitoagudodarespiraoabdominallentasobreaatividadecerebralrespostasemocionaisecardiovasculares AT machadodanielgomesdasilva effectofslowabdominalbreathingonbrainactivityemotionalandcardiovascularresponses |
_version_ |
1718672026405699584 |
spelling |
ndltd-IBICT-oai-repositorio.ufrn.br-123456789-200702018-05-23T23:26:31Z Efeito agudo da respira??o abdominal lenta sobre a atividade cerebral, respostas emocionais e cardiovasculares Effect of slow abdominal breathing on brain activity emotional and cardiovascular responses Machado, Daniel Gomes da Silva 69806217934 http://lattes.cnpq.br/9586370984131426 Ara?jo, Dr?ulio Barros de 50554310163 http://lattes.cnpq.br/7818012155694188 Fontes, Eduardo Bodnariuc 24887093870 http://lattes.cnpq.br/5147519104600801 Elsangedy, Hassan Mohamed 04459139910 http://lattes.cnpq.br/7777329239184430 Ribeiro, Luiz Fernando Paulino 25140999862 http://lattes.cnpq.br/8707909733789096 Okano, Alexandre Hideki CNPQ::CIENCIAS DA SAUDE::EDUCACAO FISICA Atividade cerebral EEG Respira??o abdominal lenta sLORETA Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-03-10T22:53:04Z No. of bitstreams: 1 DanielGomesDaSilvaMachado_DISSERT.pdf: 1013287 bytes, checksum: 76ea33e872dcb51199db57697b11915f (MD5) Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-03-18T00:10:10Z (GMT) No. of bitstreams: 1 DanielGomesDaSilvaMachado_DISSERT.pdf: 1013287 bytes, checksum: 76ea33e872dcb51199db57697b11915f (MD5) Made available in DSpace on 2016-03-18T00:10:10Z (GMT). No. of bitstreams: 1 DanielGomesDaSilvaMachado_DISSERT.pdf: 1013287 bytes, checksum: 76ea33e872dcb51199db57697b11915f (MD5) Previous issue date: 2015-02-13 Introdu??o: A respira??o abdominal lenta (RAL) estimula o barorreflexo e gera a arritmia respirat?ria sinusal, causando mudan?a positiva cardiovascular, emocional e cerebral aguda e cr?nica. Entretanto, embora as pr?ticas meditativas recebam aten??o crescente nos ?ltimos anos, n?o h? consenso acerca das mudan?as neurofisiol?gicas subjacentes a elas, principalmente pela falta de informa??o topogr?fica suficiente. Objetivo: Objetivamos analisar o efeito agudo da RAL sobre a atividade cerebral, respostas emocionais e cardiovasculares em sujeitos inexperientes em t?cnicas de medita??o. M?todos: Dezessete homens adultos saud?veis foram avaliados em duas sess?es diferentes de modo rand?mico e cruzado. Na condi??o experimental realizaram a RAL em 6 ciclos/minuto e na ix controle mantiveram sua taxa respirat?ria normal, ambas por 20 minutos. Avaliouse antes e ap?s as respectivas sess?es a atividade cerebral com o eletroencefalograma (EEG), ansiedade, humor, variabilidade da frequ?ncia card?aca (VFC) e press?o arterial. O EEG foi analisado pelo sLORETA para localiza??o das regi?es cerebrais que sofreram mudan?a. Resultados: O sLORETA evidenciou uma redu??o na banda de frequ?ncia beta no giro frontal (P<0,01) e c?rtex cingulado anterior (P<0,05) tanto durante quanto e ap?s a RAL (P<0,05) comparada ao repouso, sem mudan?a na condi??o controle. Adicionalmente, a ANOVA two-way com medidas repetidas mostrou que n?o houve efeito na ansiedade (P>0,8) nem no humor (P>0,08). Houve uma melhora na VFC (P<0,03), aumento do intervalo RR e redu??o da frequ?ncia card?aca ap?s RAL, assim como aumento no SDNN, RMSSD, pNN50, no componente de baixa frequ?ncia, raz?o LF/HF e pot?ncia total durante a mesma, sem altera??es na PAS e PAD. Conclus?o: Conclu?mos que a RAL, mesmo sem altera??es comportamentais, ? capaz de modificar a atividade cerebral em regi?es associadas ao processamento emocional. Al?m disso, melhora a VFC sem modificar a press?o arterial. Introduction: Slow abdominal breathing (SAB) stimulates baroreflex and generates respiratory sinus arrhythmia, changing cardiovascular, emotional and cerebral systems acute and chronically. However, although meditative practices have been receiving increasingly attention in the last years, there is no agreement on the neurophysiological changes underlying them, mainly because of the lack of topographical pieces of information. Purpose: We aimed to analyze the acute effect of SAB on brain activity, emotional and cardiovascular responses in untrained subjects in meditative techniques. Methods: Seventeen healthy adults? men were assessed into two different sessions in a random and crossed order. Into experimental session, they breathed in 6 cycles/minute and in control session they kept breathing in normal rate, both for 20 minutes. xi Before, during, and after each session we assessed brain activity using electroencephalography (EEG), anxiety, mood, heart rate variability (HRV) and blood pressure. The sLORETA software was used to analyze EEG data for source localization of brain areas in which activity was changed. Results: The sLORETA showed that beta band frequency was reduced in frontal gyrus (P<0.01) and anterior cingulate cortex (P<0.05) both during and after SAB (P<0.05) compared to the moment before it. There was no change in brain activity in control session. Additionally, a two-way repeated measures ANOVA showed that there was no effect on anxiety (P>0.8) and mood (P>0.08). There were improvements in HRV (P<0.03), with increased RR interval and decreased HR after SAB, as well as increased SDNN, RMSSD, pNN50, low frequency, LF/HF ratio, and total power during it, with no changes in SBP and DBP. Conclusions: We conclude that SAB is able to change brain activity in areas responsible for emotional processing, even without behavioral changes. Furthermore, SAB improves HRV and does not change blood pressure in normotensive. 2016-03-18T00:10:10Z 2016-03-18T00:10:10Z 2015-02-13 info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/masterThesis MACHADO, Daniel Gomes da Silva. Efeito agudo da respira??o abdominal lenta sobre a atividade cerebral, respostas emocionais e cardiovasculares. 2015. 70f. Disserta??o (Mestrado em Educa??o F?sica) - Centro de Ci?ncias da Sa?de, Universidade Federal do Rio Grande do Norte, Natal, 2015. http://repositorio.ufrn.br/handle/123456789/20070 por info:eu-repo/semantics/openAccess Universidade Federal do Rio Grande do Norte PROGRAMA DE P?S-GRADUA??O EM EDUCA??O F?SICA UFRN Brasil reponame:Repositório Institucional da UFRN instname:Universidade Federal do Rio Grande do Norte instacron:UFRN |