Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese Preadolescents
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Arquivos Brasileiros de Cardiologia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2016000400297 |
Resumo: | Abstract Background: Recent studies have shown changes in cardiac autonomic control of obese preadolescents. Objective: To assess the heart rate responses and cardiac autonomic modulation of obese preadolescents during constant expiratory effort. Methods: This study assessed 10 obese and 10 non-obese preadolescents aged 9 to 12 years. The body mass index of the obese group was between the 95th and 97th percentiles of the CDC National Center for Health Statistics growth charts, while that of the non-obese group, between the 5th and 85th percentiles. Initially, they underwent anthropometric and clinical assessment, and their maximum expiratory pressures were obtained. Then, the preadolescents underwent a constant expiratory effort of 70% of their maximum expiratory pressure for 20 seconds, with heart rate measurement 5 minutes before, during and 5 minutes after it. Heart rate variability (HRV) and heart rate values were analyzed by use of a software. Results: The HRV did not differ when compared before and after the constant expiratory effort intra- and intergroup. The heart rate values differed (p < 0.05) during the effort, being the total variation in non-obese preadolescents of 18.5 ± 1.5 bpm, and in obese, of 12.2 ± 1.3 bpm. Conclusion: The cardiac autonomic modulation did not differ between the groups when comparing before and after the constant expiratory effort. However, the obese group showed lower cardiovascular response to baroreceptor stimuli during the effort, suggesting lower autonomic baroreflex sensitivity. |
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Arquivos Brasileiros de Cardiologia (Online) |
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Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese PreadolescentsHeart Rate/physiologyAutonomic Nervous System/physiopathologyObesityBarorreflexPhysical ExertionAdolescentsAbstract Background: Recent studies have shown changes in cardiac autonomic control of obese preadolescents. Objective: To assess the heart rate responses and cardiac autonomic modulation of obese preadolescents during constant expiratory effort. Methods: This study assessed 10 obese and 10 non-obese preadolescents aged 9 to 12 years. The body mass index of the obese group was between the 95th and 97th percentiles of the CDC National Center for Health Statistics growth charts, while that of the non-obese group, between the 5th and 85th percentiles. Initially, they underwent anthropometric and clinical assessment, and their maximum expiratory pressures were obtained. Then, the preadolescents underwent a constant expiratory effort of 70% of their maximum expiratory pressure for 20 seconds, with heart rate measurement 5 minutes before, during and 5 minutes after it. Heart rate variability (HRV) and heart rate values were analyzed by use of a software. Results: The HRV did not differ when compared before and after the constant expiratory effort intra- and intergroup. The heart rate values differed (p < 0.05) during the effort, being the total variation in non-obese preadolescents of 18.5 ± 1.5 bpm, and in obese, of 12.2 ± 1.3 bpm. Conclusion: The cardiac autonomic modulation did not differ between the groups when comparing before and after the constant expiratory effort. However, the obese group showed lower cardiovascular response to baroreceptor stimuli during the effort, suggesting lower autonomic baroreflex sensitivity.Sociedade Brasileira de Cardiologia - SBC2016-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2016000400297Arquivos Brasileiros de Cardiologia v.106 n.4 2016reponame:Arquivos Brasileiros de Cardiologia (Online)instname:Sociedade Brasileira de Cardiologia (SBC)instacron:SBC10.5935/abc.20160040info:eu-repo/semantics/openAccessPaschoal,Mário AugustoBrunelli,Aline CarnioTamaki,Gabriela MidoriMagela,Sofia Serafimeng2016-04-29T00:00:00Zoai:scielo:S0066-782X2016000400297Revistahttp://www.arquivosonline.com.br/https://old.scielo.br/oai/scielo-oai.php||arquivos@cardiol.br1678-41700066-782Xopendoar:2016-04-29T00:00Arquivos Brasileiros de Cardiologia (Online) - Sociedade Brasileira de Cardiologia (SBC)false |
dc.title.none.fl_str_mv |
Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese Preadolescents |
title |
Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese Preadolescents |
spellingShingle |
Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese Preadolescents Paschoal,Mário Augusto Heart Rate/physiology Autonomic Nervous System/physiopathology Obesity Barorreflex Physical Exertion Adolescents |
title_short |
Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese Preadolescents |
title_full |
Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese Preadolescents |
title_fullStr |
Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese Preadolescents |
title_full_unstemmed |
Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese Preadolescents |
title_sort |
Cardiac Autonomic Adjustments During Baroreflex Test in Obese and Non-Obese Preadolescents |
author |
Paschoal,Mário Augusto |
author_facet |
Paschoal,Mário Augusto Brunelli,Aline Carnio Tamaki,Gabriela Midori Magela,Sofia Serafim |
author_role |
author |
author2 |
Brunelli,Aline Carnio Tamaki,Gabriela Midori Magela,Sofia Serafim |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Paschoal,Mário Augusto Brunelli,Aline Carnio Tamaki,Gabriela Midori Magela,Sofia Serafim |
dc.subject.por.fl_str_mv |
Heart Rate/physiology Autonomic Nervous System/physiopathology Obesity Barorreflex Physical Exertion Adolescents |
topic |
Heart Rate/physiology Autonomic Nervous System/physiopathology Obesity Barorreflex Physical Exertion Adolescents |
description |
Abstract Background: Recent studies have shown changes in cardiac autonomic control of obese preadolescents. Objective: To assess the heart rate responses and cardiac autonomic modulation of obese preadolescents during constant expiratory effort. Methods: This study assessed 10 obese and 10 non-obese preadolescents aged 9 to 12 years. The body mass index of the obese group was between the 95th and 97th percentiles of the CDC National Center for Health Statistics growth charts, while that of the non-obese group, between the 5th and 85th percentiles. Initially, they underwent anthropometric and clinical assessment, and their maximum expiratory pressures were obtained. Then, the preadolescents underwent a constant expiratory effort of 70% of their maximum expiratory pressure for 20 seconds, with heart rate measurement 5 minutes before, during and 5 minutes after it. Heart rate variability (HRV) and heart rate values were analyzed by use of a software. Results: The HRV did not differ when compared before and after the constant expiratory effort intra- and intergroup. The heart rate values differed (p < 0.05) during the effort, being the total variation in non-obese preadolescents of 18.5 ± 1.5 bpm, and in obese, of 12.2 ± 1.3 bpm. Conclusion: The cardiac autonomic modulation did not differ between the groups when comparing before and after the constant expiratory effort. However, the obese group showed lower cardiovascular response to baroreceptor stimuli during the effort, suggesting lower autonomic baroreflex sensitivity. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-01 |
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=S0066-782X2016000400297 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2016000400297 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5935/abc.20160040 |
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 |
Sociedade Brasileira de Cardiologia - SBC |
publisher.none.fl_str_mv |
Sociedade Brasileira de Cardiologia - SBC |
dc.source.none.fl_str_mv |
Arquivos Brasileiros de Cardiologia v.106 n.4 2016 reponame:Arquivos Brasileiros de Cardiologia (Online) instname:Sociedade Brasileira de Cardiologia (SBC) instacron:SBC |
instname_str |
Sociedade Brasileira de Cardiologia (SBC) |
instacron_str |
SBC |
institution |
SBC |
reponame_str |
Arquivos Brasileiros de Cardiologia (Online) |
collection |
Arquivos Brasileiros de Cardiologia (Online) |
repository.name.fl_str_mv |
Arquivos Brasileiros de Cardiologia (Online) - Sociedade Brasileira de Cardiologia (SBC) |
repository.mail.fl_str_mv |
||arquivos@cardiol.br |
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1752126566682329088 |