Exercise training reverse autonomic dysfunction and hypertension in rats fed with high-fat diet
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Motriz (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-65742017000400301 |
Resumo: | Abstract AIMS We evaluated whether exercise training ameliorates cardiovascular autonomic dysfunction in obesity-induced by high-fat diet (HFD) in rats. METHODS Wistar male rats were assigned in normal diet, sedentary (ND-S) and trained (ND-T) and HFD, sedentary (HFD-S) and trained (HFD-T). Blood pressure (BP), heart rate (HR), HR variability (HRV), BP variability (BPV), cardiac baroreflex and cardiac autonomic tonus were assessed. RESULTS HFD-S showed higher bodyweight increase (19.4%) compared to all other groups (HFD-T: 13.2%, ND-S: 14% and ND-T: 12.4%). Relative epididymal, retroperitoneal and visceral fat was also greater in HFD-S compared to all other groups. Resting bradycardia in ND-T (339.5±10.6 bpm) and HFD-T (341.0 ± 9.4 bpm) was more pronounced than ND-S (438.4 ± 6.3 bpm; p<0.05) and HFD-S (448.5 ± 18.7 bpm; p<0.05). The HFD-T group showed lower systolic (125.3 ( 1.9 mmHg), diastolic (88.5 ( 2.0 mmHg) and mean BP (100.3 ± 2.5 mmHg) in comparison with HFD-S (153.8 ( 3.7; 103.5 ( 2.6 and 120.5 ± 3.7 mmHg; p<0.05, respectively). Lower variance of HRV and higher variance of diastolic BPV was observed in HFD-S compared to other groups while sympathetic modulation of HRV and BPV was higher in HFD-S, as well as the LF/HF ratio. HFD-T showed a decrease in sympathetic tonus compared to HFD-S. ND-T and HFD-T showed higher cardiac vagal tonus than respective sedentary groups. Analysis showed an association between visceral fat, sympathetic activity and BP. CONCLUSIONS HFD induces hypertension and is associated with autonomic imbalance in rats, while exercise training may reverse these harmful changes. |
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Motriz (Online) |
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Exercise training reverse autonomic dysfunction and hypertension in rats fed with high-fat dietexercise traininghigh fat dietobesitycardiovascular autonomic dysfunctionAbstract AIMS We evaluated whether exercise training ameliorates cardiovascular autonomic dysfunction in obesity-induced by high-fat diet (HFD) in rats. METHODS Wistar male rats were assigned in normal diet, sedentary (ND-S) and trained (ND-T) and HFD, sedentary (HFD-S) and trained (HFD-T). Blood pressure (BP), heart rate (HR), HR variability (HRV), BP variability (BPV), cardiac baroreflex and cardiac autonomic tonus were assessed. RESULTS HFD-S showed higher bodyweight increase (19.4%) compared to all other groups (HFD-T: 13.2%, ND-S: 14% and ND-T: 12.4%). Relative epididymal, retroperitoneal and visceral fat was also greater in HFD-S compared to all other groups. Resting bradycardia in ND-T (339.5±10.6 bpm) and HFD-T (341.0 ± 9.4 bpm) was more pronounced than ND-S (438.4 ± 6.3 bpm; p<0.05) and HFD-S (448.5 ± 18.7 bpm; p<0.05). The HFD-T group showed lower systolic (125.3 ( 1.9 mmHg), diastolic (88.5 ( 2.0 mmHg) and mean BP (100.3 ± 2.5 mmHg) in comparison with HFD-S (153.8 ( 3.7; 103.5 ( 2.6 and 120.5 ± 3.7 mmHg; p<0.05, respectively). Lower variance of HRV and higher variance of diastolic BPV was observed in HFD-S compared to other groups while sympathetic modulation of HRV and BPV was higher in HFD-S, as well as the LF/HF ratio. HFD-T showed a decrease in sympathetic tonus compared to HFD-S. ND-T and HFD-T showed higher cardiac vagal tonus than respective sedentary groups. Analysis showed an association between visceral fat, sympathetic activity and BP. CONCLUSIONS HFD induces hypertension and is associated with autonomic imbalance in rats, while exercise training may reverse these harmful changes.Universidade Estadual Paulista2017-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-65742017000400301Motriz: Revista de Educação Física v.23 n.4 2017reponame:Motriz (Online)instname:Universidade Estadual Paulista (UNESP)instacron:UNESP10.1590/s1980-6574201700040004info:eu-repo/semantics/openAccessSordi,Carla Cristina deLemos,Marina de PaivaMarocolo,MoacirChriguer,Rosangela SoaresMendes,Edmar LacerdaMota,Gustavo Ribeiro daBarbosa Neto,Octávioeng2017-12-15T00:00:00Zoai:scielo:S1980-65742017000400301Revistahttp://www.periodicos.rc.biblioteca.unesp.br/index.php/motrizPUBhttps://old.scielo.br/oai/scielo-oai.phpmotriz@rc.unesp.br||mauerber@rc.unesp.br||azanesco@rc.unesp.br1980-65741415-9805opendoar:2022-11-08T16:30:32.410074Motriz (Online) - Universidade Estadual Paulista (UNESP)true |
dc.title.none.fl_str_mv |
Exercise training reverse autonomic dysfunction and hypertension in rats fed with high-fat diet |
title |
Exercise training reverse autonomic dysfunction and hypertension in rats fed with high-fat diet |
spellingShingle |
Exercise training reverse autonomic dysfunction and hypertension in rats fed with high-fat diet Sordi,Carla Cristina de exercise training high fat diet obesity cardiovascular autonomic dysfunction |
title_short |
Exercise training reverse autonomic dysfunction and hypertension in rats fed with high-fat diet |
title_full |
Exercise training reverse autonomic dysfunction and hypertension in rats fed with high-fat diet |
title_fullStr |
Exercise training reverse autonomic dysfunction and hypertension in rats fed with high-fat diet |
title_full_unstemmed |
Exercise training reverse autonomic dysfunction and hypertension in rats fed with high-fat diet |
title_sort |
Exercise training reverse autonomic dysfunction and hypertension in rats fed with high-fat diet |
author |
Sordi,Carla Cristina de |
author_facet |
Sordi,Carla Cristina de Lemos,Marina de Paiva Marocolo,Moacir Chriguer,Rosangela Soares Mendes,Edmar Lacerda Mota,Gustavo Ribeiro da Barbosa Neto,Octávio |
author_role |
author |
author2 |
Lemos,Marina de Paiva Marocolo,Moacir Chriguer,Rosangela Soares Mendes,Edmar Lacerda Mota,Gustavo Ribeiro da Barbosa Neto,Octávio |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Sordi,Carla Cristina de Lemos,Marina de Paiva Marocolo,Moacir Chriguer,Rosangela Soares Mendes,Edmar Lacerda Mota,Gustavo Ribeiro da Barbosa Neto,Octávio |
dc.subject.por.fl_str_mv |
exercise training high fat diet obesity cardiovascular autonomic dysfunction |
topic |
exercise training high fat diet obesity cardiovascular autonomic dysfunction |
description |
Abstract AIMS We evaluated whether exercise training ameliorates cardiovascular autonomic dysfunction in obesity-induced by high-fat diet (HFD) in rats. METHODS Wistar male rats were assigned in normal diet, sedentary (ND-S) and trained (ND-T) and HFD, sedentary (HFD-S) and trained (HFD-T). Blood pressure (BP), heart rate (HR), HR variability (HRV), BP variability (BPV), cardiac baroreflex and cardiac autonomic tonus were assessed. RESULTS HFD-S showed higher bodyweight increase (19.4%) compared to all other groups (HFD-T: 13.2%, ND-S: 14% and ND-T: 12.4%). Relative epididymal, retroperitoneal and visceral fat was also greater in HFD-S compared to all other groups. Resting bradycardia in ND-T (339.5±10.6 bpm) and HFD-T (341.0 ± 9.4 bpm) was more pronounced than ND-S (438.4 ± 6.3 bpm; p<0.05) and HFD-S (448.5 ± 18.7 bpm; p<0.05). The HFD-T group showed lower systolic (125.3 ( 1.9 mmHg), diastolic (88.5 ( 2.0 mmHg) and mean BP (100.3 ± 2.5 mmHg) in comparison with HFD-S (153.8 ( 3.7; 103.5 ( 2.6 and 120.5 ± 3.7 mmHg; p<0.05, respectively). Lower variance of HRV and higher variance of diastolic BPV was observed in HFD-S compared to other groups while sympathetic modulation of HRV and BPV was higher in HFD-S, as well as the LF/HF ratio. HFD-T showed a decrease in sympathetic tonus compared to HFD-S. ND-T and HFD-T showed higher cardiac vagal tonus than respective sedentary groups. Analysis showed an association between visceral fat, sympathetic activity and BP. CONCLUSIONS HFD induces hypertension and is associated with autonomic imbalance in rats, while exercise training may reverse these harmful changes. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-01-01 |
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=S1980-65742017000400301 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-65742017000400301 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/s1980-6574201700040004 |
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 |
Universidade Estadual Paulista |
publisher.none.fl_str_mv |
Universidade Estadual Paulista |
dc.source.none.fl_str_mv |
Motriz: Revista de Educação Física v.23 n.4 2017 reponame:Motriz (Online) instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Motriz (Online) |
collection |
Motriz (Online) |
repository.name.fl_str_mv |
Motriz (Online) - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
motriz@rc.unesp.br||mauerber@rc.unesp.br||azanesco@rc.unesp.br |
_version_ |
1788170935543529472 |