Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1139/apnm-2017-0381 http://hdl.handle.net/11449/179547 |
Resumo: | The objective of this study was to test the hypotheses that end-test torque (ET) (expressed as % maximal voluntary contraction; MVC) is higher for plantar flexors (PF) than knee extensors (KE) muscles, whereas impulse above ET (IET) is higher for KE than PF. Thus, we expected that exercise tolerance would be longer for KE than PF only during the exercise performed above ET. After the determination of MVC, 40 men performed two 5-min all-out tests to determine ET and IET. Eleven participants performed a further 4 intermittent isometric tests, to exhaustion, at ET + 5% and ET-5%, and 1 test for KE at the exercise intensity (%MVC) corresponding to ET + 5% of PF. The IET (7243.2 ± 1942.9 vs. 3357.4 ± 1132.3 N·m·s) and ET (84.4 ± 24.8 vs. 73.9 ± 19.5 N·m) were significantly lower in PF compared with KE. The exercise tolerance was significantly longer for PF (300.7 ± 156.7 s) than KE (156.7 ± 104.3 s) at similar %MVC (~60%), and significantly shorter for PF (300.7 ± 156.7 s) than KE (697.0 ± 243.7 s) at ET + 5% condition. However, no significant difference was observed for ET-5% condition (KE = 1030.2 ± 495.4 s vs. PF = 1028.3 ± 514.4 s). Thus, the limit of tolerance during submaximal isometric contractions is influenced by absolute MVC only during exercise performed above ET, which seems to be explained by differences on both ET (expressed as %MVC) and IET values. |
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Exercise tolerance during muscle contractions below and above the critical torque in different muscle groupsExerciseExercise intensity domainFatigueIsometricMaximal voluntary contractionMuscle volumeThe objective of this study was to test the hypotheses that end-test torque (ET) (expressed as % maximal voluntary contraction; MVC) is higher for plantar flexors (PF) than knee extensors (KE) muscles, whereas impulse above ET (IET) is higher for KE than PF. Thus, we expected that exercise tolerance would be longer for KE than PF only during the exercise performed above ET. After the determination of MVC, 40 men performed two 5-min all-out tests to determine ET and IET. Eleven participants performed a further 4 intermittent isometric tests, to exhaustion, at ET + 5% and ET-5%, and 1 test for KE at the exercise intensity (%MVC) corresponding to ET + 5% of PF. The IET (7243.2 ± 1942.9 vs. 3357.4 ± 1132.3 N·m·s) and ET (84.4 ± 24.8 vs. 73.9 ± 19.5 N·m) were significantly lower in PF compared with KE. The exercise tolerance was significantly longer for PF (300.7 ± 156.7 s) than KE (156.7 ± 104.3 s) at similar %MVC (~60%), and significantly shorter for PF (300.7 ± 156.7 s) than KE (697.0 ± 243.7 s) at ET + 5% condition. However, no significant difference was observed for ET-5% condition (KE = 1030.2 ± 495.4 s vs. PF = 1028.3 ± 514.4 s). Thus, the limit of tolerance during submaximal isometric contractions is influenced by absolute MVC only during exercise performed above ET, which seems to be explained by differences on both ET (expressed as %MVC) and IET values.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Human Performance Laboratory São Paulo State University (UNESP), Av. 24A, 1515, Bela VistaHuman Performance Laboratory São Paulo State University (UNESP), Av. 24A, 1515, Bela VistaFAPESP: 2016/18017-5Universidade Estadual Paulista (Unesp)Abdalla, Leonardo Henrique Perinotto [UNESP]Denadai, Benedito Sérgio [UNESP]Bassan, Natália Menezes [UNESP]Greco, Camila Coelho [UNESP]2018-12-11T17:35:37Z2018-12-11T17:35:37Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article174-179application/pdfhttp://dx.doi.org/10.1139/apnm-2017-0381Applied Physiology, Nutrition and Metabolism, v. 43, n. 2, p. 174-179, 2018.1715-53201715-5312http://hdl.handle.net/11449/17954710.1139/apnm-2017-03812-s2.0-850413562922-s2.0-85041356292.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengApplied Physiology, Nutrition and Metabolism1,112info:eu-repo/semantics/openAccess2023-10-10T06:06:33Zoai:repositorio.unesp.br:11449/179547Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:31:45.674306Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups |
title |
Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups |
spellingShingle |
Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups Abdalla, Leonardo Henrique Perinotto [UNESP] Exercise Exercise intensity domain Fatigue Isometric Maximal voluntary contraction Muscle volume |
title_short |
Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups |
title_full |
Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups |
title_fullStr |
Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups |
title_full_unstemmed |
Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups |
title_sort |
Exercise tolerance during muscle contractions below and above the critical torque in different muscle groups |
author |
Abdalla, Leonardo Henrique Perinotto [UNESP] |
author_facet |
Abdalla, Leonardo Henrique Perinotto [UNESP] Denadai, Benedito Sérgio [UNESP] Bassan, Natália Menezes [UNESP] Greco, Camila Coelho [UNESP] |
author_role |
author |
author2 |
Denadai, Benedito Sérgio [UNESP] Bassan, Natália Menezes [UNESP] Greco, Camila Coelho [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Abdalla, Leonardo Henrique Perinotto [UNESP] Denadai, Benedito Sérgio [UNESP] Bassan, Natália Menezes [UNESP] Greco, Camila Coelho [UNESP] |
dc.subject.por.fl_str_mv |
Exercise Exercise intensity domain Fatigue Isometric Maximal voluntary contraction Muscle volume |
topic |
Exercise Exercise intensity domain Fatigue Isometric Maximal voluntary contraction Muscle volume |
description |
The objective of this study was to test the hypotheses that end-test torque (ET) (expressed as % maximal voluntary contraction; MVC) is higher for plantar flexors (PF) than knee extensors (KE) muscles, whereas impulse above ET (IET) is higher for KE than PF. Thus, we expected that exercise tolerance would be longer for KE than PF only during the exercise performed above ET. After the determination of MVC, 40 men performed two 5-min all-out tests to determine ET and IET. Eleven participants performed a further 4 intermittent isometric tests, to exhaustion, at ET + 5% and ET-5%, and 1 test for KE at the exercise intensity (%MVC) corresponding to ET + 5% of PF. The IET (7243.2 ± 1942.9 vs. 3357.4 ± 1132.3 N·m·s) and ET (84.4 ± 24.8 vs. 73.9 ± 19.5 N·m) were significantly lower in PF compared with KE. The exercise tolerance was significantly longer for PF (300.7 ± 156.7 s) than KE (156.7 ± 104.3 s) at similar %MVC (~60%), and significantly shorter for PF (300.7 ± 156.7 s) than KE (697.0 ± 243.7 s) at ET + 5% condition. However, no significant difference was observed for ET-5% condition (KE = 1030.2 ± 495.4 s vs. PF = 1028.3 ± 514.4 s). Thus, the limit of tolerance during submaximal isometric contractions is influenced by absolute MVC only during exercise performed above ET, which seems to be explained by differences on both ET (expressed as %MVC) and IET values. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:35:37Z 2018-12-11T17:35:37Z 2018-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1139/apnm-2017-0381 Applied Physiology, Nutrition and Metabolism, v. 43, n. 2, p. 174-179, 2018. 1715-5320 1715-5312 http://hdl.handle.net/11449/179547 10.1139/apnm-2017-0381 2-s2.0-85041356292 2-s2.0-85041356292.pdf |
url |
http://dx.doi.org/10.1139/apnm-2017-0381 http://hdl.handle.net/11449/179547 |
identifier_str_mv |
Applied Physiology, Nutrition and Metabolism, v. 43, n. 2, p. 174-179, 2018. 1715-5320 1715-5312 10.1139/apnm-2017-0381 2-s2.0-85041356292 2-s2.0-85041356292.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Applied Physiology, Nutrition and Metabolism 1,112 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
174-179 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128374880600064 |