Alterations in peak torque occur without hematological changes after muscle fatigue
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista brasileira de medicina do esporte (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-86922017000300180 |
Resumo: | ABSTRACT Introduction: Muscular fatigue during voluntary muscle contractions is a complex and multifactorial phenomenon associated with central changes and adaptations of the neuromuscular system. Objective: The aim of this study was to analyze the changes in both peak torque and hematological parameters in active and inactive healthy subjects following a muscular fatigue protocol. Methods: Twenty-one healthy adult males performed a muscle fatigue protocol (10 sets, 10 repetitions of knee extension at 75% of the maximal isometric torque (MIT), 120º s-1 and 40 seconds of rest). Hematocrit (Ht), red blood cells (RBC) and leukocytes (L) analysis were evaluated before (B) and after (A) a fatigue test. Results: The inactive group presented impairment only in concentric muscular action of -41±4% in relation to the active (-23±3%) group. No differences were found in hematological parameters in inactive group (Ht, B: 45.00±0.01 vs. A: 47.00±0.01; RBC, B: 442±40 vs. A: 487±41; L, B: 7,565±2,878 vs. A: 8,015±4,224) and the active group (Ht, B: 45.00±0.63 vs. A: 47.00±0.01; RBC, B: 477±30 vs. A: 559±37; L, B: 6,418±3,557 vs. A: 6,632±4,460). Conclusion: Differences were found only in concentric actions between groups. Additionally, there were no relationships found in hematological parameters between groups. |
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Alterations in peak torque occur without hematological changes after muscle fatiguemuscle fatiguemuscle, skeletalmuscle strengthphysiologyABSTRACT Introduction: Muscular fatigue during voluntary muscle contractions is a complex and multifactorial phenomenon associated with central changes and adaptations of the neuromuscular system. Objective: The aim of this study was to analyze the changes in both peak torque and hematological parameters in active and inactive healthy subjects following a muscular fatigue protocol. Methods: Twenty-one healthy adult males performed a muscle fatigue protocol (10 sets, 10 repetitions of knee extension at 75% of the maximal isometric torque (MIT), 120º s-1 and 40 seconds of rest). Hematocrit (Ht), red blood cells (RBC) and leukocytes (L) analysis were evaluated before (B) and after (A) a fatigue test. Results: The inactive group presented impairment only in concentric muscular action of -41±4% in relation to the active (-23±3%) group. No differences were found in hematological parameters in inactive group (Ht, B: 45.00±0.01 vs. A: 47.00±0.01; RBC, B: 442±40 vs. A: 487±41; L, B: 7,565±2,878 vs. A: 8,015±4,224) and the active group (Ht, B: 45.00±0.63 vs. A: 47.00±0.01; RBC, B: 477±30 vs. A: 559±37; L, B: 6,418±3,557 vs. A: 6,632±4,460). Conclusion: Differences were found only in concentric actions between groups. Additionally, there were no relationships found in hematological parameters between groups.Sociedade Brasileira de Medicina do Exercício e do Esporte2017-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-86922017000300180Revista Brasileira de Medicina do Esporte v.23 n.3 2017reponame:Revista brasileira de medicina do esporte (Online)instname:Sociedade Brasileira de Medicina do Exercício e do Esporte (SBMEE)instacron:SBMEE10.1590/1517-869220172303171086info:eu-repo/semantics/openAccessSuzuki,Frank ShiguemitsuKalytczak,Marcelo MartinsPalomares,Rodrigo Augusto FerreiraPaunksnis,Marcos RodolfoSilva,Sergio MatiasPoliti,FabianoSbampato,Adriana JaimeSerra,Andrey JorgeEvangelista,Alexandre LopesAlonso,Angélica CastilhoFigueira Junior,AyltonBuchan,DuncanBaker,Julien StevenBocalini,Danilo Saleseng2017-06-28T00:00:00Zoai:scielo:S1517-86922017000300180Revistahttp://www.scielo.br/rbmeONGhttps://old.scielo.br/oai/scielo-oai.php||revista@medicinadoesporte.org.br1806-99401517-8692opendoar:2017-06-28T00:00Revista brasileira de medicina do esporte (Online) - Sociedade Brasileira de Medicina do Exercício e do Esporte (SBMEE)false |
dc.title.none.fl_str_mv |
Alterations in peak torque occur without hematological changes after muscle fatigue |
title |
Alterations in peak torque occur without hematological changes after muscle fatigue |
spellingShingle |
Alterations in peak torque occur without hematological changes after muscle fatigue Suzuki,Frank Shiguemitsu muscle fatigue muscle, skeletal muscle strength physiology |
title_short |
Alterations in peak torque occur without hematological changes after muscle fatigue |
title_full |
Alterations in peak torque occur without hematological changes after muscle fatigue |
title_fullStr |
Alterations in peak torque occur without hematological changes after muscle fatigue |
title_full_unstemmed |
Alterations in peak torque occur without hematological changes after muscle fatigue |
title_sort |
Alterations in peak torque occur without hematological changes after muscle fatigue |
author |
Suzuki,Frank Shiguemitsu |
author_facet |
Suzuki,Frank Shiguemitsu Kalytczak,Marcelo Martins Palomares,Rodrigo Augusto Ferreira Paunksnis,Marcos Rodolfo Silva,Sergio Matias Politi,Fabiano Sbampato,Adriana Jaime Serra,Andrey Jorge Evangelista,Alexandre Lopes Alonso,Angélica Castilho Figueira Junior,Aylton Buchan,Duncan Baker,Julien Steven Bocalini,Danilo Sales |
author_role |
author |
author2 |
Kalytczak,Marcelo Martins Palomares,Rodrigo Augusto Ferreira Paunksnis,Marcos Rodolfo Silva,Sergio Matias Politi,Fabiano Sbampato,Adriana Jaime Serra,Andrey Jorge Evangelista,Alexandre Lopes Alonso,Angélica Castilho Figueira Junior,Aylton Buchan,Duncan Baker,Julien Steven Bocalini,Danilo Sales |
author2_role |
author author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Suzuki,Frank Shiguemitsu Kalytczak,Marcelo Martins Palomares,Rodrigo Augusto Ferreira Paunksnis,Marcos Rodolfo Silva,Sergio Matias Politi,Fabiano Sbampato,Adriana Jaime Serra,Andrey Jorge Evangelista,Alexandre Lopes Alonso,Angélica Castilho Figueira Junior,Aylton Buchan,Duncan Baker,Julien Steven Bocalini,Danilo Sales |
dc.subject.por.fl_str_mv |
muscle fatigue muscle, skeletal muscle strength physiology |
topic |
muscle fatigue muscle, skeletal muscle strength physiology |
description |
ABSTRACT Introduction: Muscular fatigue during voluntary muscle contractions is a complex and multifactorial phenomenon associated with central changes and adaptations of the neuromuscular system. Objective: The aim of this study was to analyze the changes in both peak torque and hematological parameters in active and inactive healthy subjects following a muscular fatigue protocol. Methods: Twenty-one healthy adult males performed a muscle fatigue protocol (10 sets, 10 repetitions of knee extension at 75% of the maximal isometric torque (MIT), 120º s-1 and 40 seconds of rest). Hematocrit (Ht), red blood cells (RBC) and leukocytes (L) analysis were evaluated before (B) and after (A) a fatigue test. Results: The inactive group presented impairment only in concentric muscular action of -41±4% in relation to the active (-23±3%) group. No differences were found in hematological parameters in inactive group (Ht, B: 45.00±0.01 vs. A: 47.00±0.01; RBC, B: 442±40 vs. A: 487±41; L, B: 7,565±2,878 vs. A: 8,015±4,224) and the active group (Ht, B: 45.00±0.63 vs. A: 47.00±0.01; RBC, B: 477±30 vs. A: 559±37; L, B: 6,418±3,557 vs. A: 6,632±4,460). Conclusion: Differences were found only in concentric actions between groups. Additionally, there were no relationships found in hematological parameters between groups. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05-01 |
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=S1517-86922017000300180 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-86922017000300180 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1517-869220172303171086 |
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 Medicina do Exercício e do Esporte |
publisher.none.fl_str_mv |
Sociedade Brasileira de Medicina do Exercício e do Esporte |
dc.source.none.fl_str_mv |
Revista Brasileira de Medicina do Esporte v.23 n.3 2017 reponame:Revista brasileira de medicina do esporte (Online) instname:Sociedade Brasileira de Medicina do Exercício e do Esporte (SBMEE) instacron:SBMEE |
instname_str |
Sociedade Brasileira de Medicina do Exercício e do Esporte (SBMEE) |
instacron_str |
SBMEE |
institution |
SBMEE |
reponame_str |
Revista brasileira de medicina do esporte (Online) |
collection |
Revista brasileira de medicina do esporte (Online) |
repository.name.fl_str_mv |
Revista brasileira de medicina do esporte (Online) - Sociedade Brasileira de Medicina do Exercício e do Esporte (SBMEE) |
repository.mail.fl_str_mv |
||revista@medicinadoesporte.org.br |
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1752122235832762368 |