Heart Rate Variability at rest and after the 6-minute walk test (6MWT) in children with cystic fibrosis
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Physical Therapy |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-35552013000500419 |
Resumo: | BACKGROUND: Cystic fibrosis (CF) is a multisystem disease that affects the cardiorespiratory system and the cardiac autonomic control may be altered at rest and after a submaximal exercise. OBJECTIVE: To assess the cardiac autonomic control by heart rate variability (HRV) analysis before and after a 6-minute walk test (6MWT). METHOD: Thirteen children diagnosed with Cystic Fibrosis (CFG) aged 12±2.7 years (FEV1/FVC: 0.83±0.11, FEV1: 71.4±21 %pred) and 12 healthy children (control group-CG) aged 11.4±2.4 years (FEV1/FVC: 0.91±0.12, FEV1: 91.6±17.4 %pred) were included in the study. HRV was evaluated prior to and immediately after the 6MWT and the heart rate recovery assessed on the first and second minute after test. RESULTS: Prior to exercise, CF patients presented higher values for the variables LFnu (53.2±15.0 vs. 32.8±7.9, p=0.0003) and LF/HF (1.25±0.72 vs. 0.49±0.18, p<0.006) as well as lower values of HF% (25.4±18.4 vs. 53±9.6, p=0.002) and HFnu (47.3±14.7 vs. 68.3±8.7, p0.001) when compared to CG. After the 6MWT, both groups demonstrated HRV recovery to baseline levels; however, the differences between CFG and CG were maintained for the variables LF(ms 2) (846.7±754.8 vs. 345.6±197.2, p=0.02); LF% (35.4±8.1 vs. 25.9±6.2, p=0.002); LFnu (60.0±16.3 vs. 34.9±8.7, p<0.0001); HF% (27.4±13.7 vs. 48.1±6.3, p=0.0003); HFnu (40.4±15.8 vs. 65.6±8.2, p=0.0003) and LF/HF (1.9±1.7 vs. 0.5±0.2, p=0.0001). CONCLUSIONS: Children with cystic fibrosis exhibited predominance of sympathetic activity at rest that persisted after the 6-minute walking test when compared to the control group. |
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Brazilian Journal of Physical Therapy |
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Heart Rate Variability at rest and after the 6-minute walk test (6MWT) in children with cystic fibrosisphysical therapy specialtycystic fibrosisheart rateautonomic nervous systemexercise BACKGROUND: Cystic fibrosis (CF) is a multisystem disease that affects the cardiorespiratory system and the cardiac autonomic control may be altered at rest and after a submaximal exercise. OBJECTIVE: To assess the cardiac autonomic control by heart rate variability (HRV) analysis before and after a 6-minute walk test (6MWT). METHOD: Thirteen children diagnosed with Cystic Fibrosis (CFG) aged 12±2.7 years (FEV1/FVC: 0.83±0.11, FEV1: 71.4±21 %pred) and 12 healthy children (control group-CG) aged 11.4±2.4 years (FEV1/FVC: 0.91±0.12, FEV1: 91.6±17.4 %pred) were included in the study. HRV was evaluated prior to and immediately after the 6MWT and the heart rate recovery assessed on the first and second minute after test. RESULTS: Prior to exercise, CF patients presented higher values for the variables LFnu (53.2±15.0 vs. 32.8±7.9, p=0.0003) and LF/HF (1.25±0.72 vs. 0.49±0.18, p<0.006) as well as lower values of HF% (25.4±18.4 vs. 53±9.6, p=0.002) and HFnu (47.3±14.7 vs. 68.3±8.7, p0.001) when compared to CG. After the 6MWT, both groups demonstrated HRV recovery to baseline levels; however, the differences between CFG and CG were maintained for the variables LF(ms 2) (846.7±754.8 vs. 345.6±197.2, p=0.02); LF% (35.4±8.1 vs. 25.9±6.2, p=0.002); LFnu (60.0±16.3 vs. 34.9±8.7, p<0.0001); HF% (27.4±13.7 vs. 48.1±6.3, p=0.0003); HFnu (40.4±15.8 vs. 65.6±8.2, p=0.0003) and LF/HF (1.9±1.7 vs. 0.5±0.2, p=0.0001). CONCLUSIONS: Children with cystic fibrosis exhibited predominance of sympathetic activity at rest that persisted after the 6-minute walking test when compared to the control group. Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia 2013-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-35552013000500419Brazilian Journal of Physical Therapy v.17 n.5 2013reponame:Brazilian Journal of Physical Therapyinstname:Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia (ABRAPG-FT)instacron:ABRAPG-FT10.1590/S1413-35552012005000109info:eu-repo/semantics/openAccessFlorencio,RencioFregonezi,GuilhermeBrilhante,SilviaBorghi-Silva,AudreyDias,FernandoResqueti,Vanessaeng2013-10-28T00:00:00Zoai:scielo:S1413-35552013000500419Revistahttps://www.scielo.br/j/rbfis/https://old.scielo.br/oai/scielo-oai.phpcontato@rbf-bjpt.org.br||contato@rbf-bjpt.org.br1809-92461413-3555opendoar:2013-10-28T00:00Brazilian Journal of Physical Therapy - Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia (ABRAPG-FT)false |
dc.title.none.fl_str_mv |
Heart Rate Variability at rest and after the 6-minute walk test (6MWT) in children with cystic fibrosis |
title |
Heart Rate Variability at rest and after the 6-minute walk test (6MWT) in children with cystic fibrosis |
spellingShingle |
Heart Rate Variability at rest and after the 6-minute walk test (6MWT) in children with cystic fibrosis Florencio,Rencio physical therapy specialty cystic fibrosis heart rate autonomic nervous system exercise |
title_short |
Heart Rate Variability at rest and after the 6-minute walk test (6MWT) in children with cystic fibrosis |
title_full |
Heart Rate Variability at rest and after the 6-minute walk test (6MWT) in children with cystic fibrosis |
title_fullStr |
Heart Rate Variability at rest and after the 6-minute walk test (6MWT) in children with cystic fibrosis |
title_full_unstemmed |
Heart Rate Variability at rest and after the 6-minute walk test (6MWT) in children with cystic fibrosis |
title_sort |
Heart Rate Variability at rest and after the 6-minute walk test (6MWT) in children with cystic fibrosis |
author |
Florencio,Rencio |
author_facet |
Florencio,Rencio Fregonezi,Guilherme Brilhante,Silvia Borghi-Silva,Audrey Dias,Fernando Resqueti,Vanessa |
author_role |
author |
author2 |
Fregonezi,Guilherme Brilhante,Silvia Borghi-Silva,Audrey Dias,Fernando Resqueti,Vanessa |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Florencio,Rencio Fregonezi,Guilherme Brilhante,Silvia Borghi-Silva,Audrey Dias,Fernando Resqueti,Vanessa |
dc.subject.por.fl_str_mv |
physical therapy specialty cystic fibrosis heart rate autonomic nervous system exercise |
topic |
physical therapy specialty cystic fibrosis heart rate autonomic nervous system exercise |
description |
BACKGROUND: Cystic fibrosis (CF) is a multisystem disease that affects the cardiorespiratory system and the cardiac autonomic control may be altered at rest and after a submaximal exercise. OBJECTIVE: To assess the cardiac autonomic control by heart rate variability (HRV) analysis before and after a 6-minute walk test (6MWT). METHOD: Thirteen children diagnosed with Cystic Fibrosis (CFG) aged 12±2.7 years (FEV1/FVC: 0.83±0.11, FEV1: 71.4±21 %pred) and 12 healthy children (control group-CG) aged 11.4±2.4 years (FEV1/FVC: 0.91±0.12, FEV1: 91.6±17.4 %pred) were included in the study. HRV was evaluated prior to and immediately after the 6MWT and the heart rate recovery assessed on the first and second minute after test. RESULTS: Prior to exercise, CF patients presented higher values for the variables LFnu (53.2±15.0 vs. 32.8±7.9, p=0.0003) and LF/HF (1.25±0.72 vs. 0.49±0.18, p<0.006) as well as lower values of HF% (25.4±18.4 vs. 53±9.6, p=0.002) and HFnu (47.3±14.7 vs. 68.3±8.7, p0.001) when compared to CG. After the 6MWT, both groups demonstrated HRV recovery to baseline levels; however, the differences between CFG and CG were maintained for the variables LF(ms 2) (846.7±754.8 vs. 345.6±197.2, p=0.02); LF% (35.4±8.1 vs. 25.9±6.2, p=0.002); LFnu (60.0±16.3 vs. 34.9±8.7, p<0.0001); HF% (27.4±13.7 vs. 48.1±6.3, p=0.0003); HFnu (40.4±15.8 vs. 65.6±8.2, p=0.0003) and LF/HF (1.9±1.7 vs. 0.5±0.2, p=0.0001). CONCLUSIONS: Children with cystic fibrosis exhibited predominance of sympathetic activity at rest that persisted after the 6-minute walking test when compared to the control group. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-35552013000500419 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-35552013000500419 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1413-35552012005000109 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia |
publisher.none.fl_str_mv |
Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia |
dc.source.none.fl_str_mv |
Brazilian Journal of Physical Therapy v.17 n.5 2013 reponame:Brazilian Journal of Physical Therapy instname:Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia (ABRAPG-FT) instacron:ABRAPG-FT |
instname_str |
Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia (ABRAPG-FT) |
instacron_str |
ABRAPG-FT |
institution |
ABRAPG-FT |
reponame_str |
Brazilian Journal of Physical Therapy |
collection |
Brazilian Journal of Physical Therapy |
repository.name.fl_str_mv |
Brazilian Journal of Physical Therapy - Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia (ABRAPG-FT) |
repository.mail.fl_str_mv |
contato@rbf-bjpt.org.br||contato@rbf-bjpt.org.br |
_version_ |
1754575949659111424 |