Effects of high intensity running to fatigue on isokinetic muscular strength in endurance athletes
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3233/ies-2007-0284 http://hdl.handle.net/11449/225012 |
Resumo: | The objective of this study was to examine the effects of high intensity exhaustive running exercise on the muscular torque capacity of the knee extensors for two types of contraction (concentric and eccentric) at different angular velocities (60 and 180°/s) in well-trained runners. Eleven male runners specialized in middle and long-distance running volunteered to participate in this study. Initially each subject performed, on different days, two familiarization sessions on an isokinetic dynamometer and an incremental treadmill test to volitional exhaustion to determine the velocity associated with the onset of blood lactate accumulation (OBLA). The subjects then returned to the laboratory on two occasions, separated by at least seven days, to perform maximal isokinetic knee contractions at each of the velocities under eccentric (Ecc) and concentric (Con) conditions. Conducted randomly, one test was performed after a standardized warm-up period of 5 min at 50% VO_2max. The other test was performed 15 min after continuous running at OBLA until volitional exhaustion. Following this high intensity exercise there was a significant reduction of Con at 60°/s and a significant reduction of Ecc at both velocities. Percent strength losses after running exercise were significantly different between contraction types only at 180°/s. We can conclude that the reduction in isokinetic peak torque of the knee extensors after a session of high intensity exhaustive running exercise at OBLA depends on the contraction type and angular velocity. © 2007 - IOS Press and the authors. All rights reserved. |
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Effects of high intensity running to fatigue on isokinetic muscular strength in endurance athletesAerobic exerciseAngular velocityConcentricEccentricFatigueThe objective of this study was to examine the effects of high intensity exhaustive running exercise on the muscular torque capacity of the knee extensors for two types of contraction (concentric and eccentric) at different angular velocities (60 and 180°/s) in well-trained runners. Eleven male runners specialized in middle and long-distance running volunteered to participate in this study. Initially each subject performed, on different days, two familiarization sessions on an isokinetic dynamometer and an incremental treadmill test to volitional exhaustion to determine the velocity associated with the onset of blood lactate accumulation (OBLA). The subjects then returned to the laboratory on two occasions, separated by at least seven days, to perform maximal isokinetic knee contractions at each of the velocities under eccentric (Ecc) and concentric (Con) conditions. Conducted randomly, one test was performed after a standardized warm-up period of 5 min at 50% VO_2max. The other test was performed 15 min after continuous running at OBLA until volitional exhaustion. Following this high intensity exercise there was a significant reduction of Con at 60°/s and a significant reduction of Ecc at both velocities. Percent strength losses after running exercise were significantly different between contraction types only at 180°/s. We can conclude that the reduction in isokinetic peak torque of the knee extensors after a session of high intensity exhaustive running exercise at OBLA depends on the contraction type and angular velocity. © 2007 - IOS Press and the authors. All rights reserved.Human Performance Laboratory UNESP, Rio Claro S.P.Department of Psychobiology Sleep Institute Federal University of São Paulo, Sao PauloLaboratório de Avaliação Da Performance Humana UNESP, Av. 24 A, 1515, Bela Vista, Rio Claro, SP, CEP - 13506-900Human Performance Laboratory UNESP, Rio Claro S.P.Laboratório de Avaliação Da Performance Humana UNESP, Av. 24 A, 1515, Bela Vista, Rio Claro, SP, CEP - 13506-900Universidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)Denadai, Benedito Sérgio [UNESP]Greco, Camila Coelho [UNESP]Tufik, SergioDe Mello, Marco Túlio2022-04-28T20:35:27Z2022-04-28T20:35:27Z2007-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article281-285http://dx.doi.org/10.3233/ies-2007-0284Isokinetics and Exercise Science, v. 15, n. 4, p. 281-285, 2007.0959-3020http://hdl.handle.net/11449/22501210.3233/ies-2007-02842-s2.0-36549068711Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIsokinetics and Exercise Scienceinfo:eu-repo/semantics/openAccess2022-04-28T20:35:27Zoai:repositorio.unesp.br:11449/225012Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T20:35:27Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effects of high intensity running to fatigue on isokinetic muscular strength in endurance athletes |
title |
Effects of high intensity running to fatigue on isokinetic muscular strength in endurance athletes |
spellingShingle |
Effects of high intensity running to fatigue on isokinetic muscular strength in endurance athletes Denadai, Benedito Sérgio [UNESP] Aerobic exercise Angular velocity Concentric Eccentric Fatigue |
title_short |
Effects of high intensity running to fatigue on isokinetic muscular strength in endurance athletes |
title_full |
Effects of high intensity running to fatigue on isokinetic muscular strength in endurance athletes |
title_fullStr |
Effects of high intensity running to fatigue on isokinetic muscular strength in endurance athletes |
title_full_unstemmed |
Effects of high intensity running to fatigue on isokinetic muscular strength in endurance athletes |
title_sort |
Effects of high intensity running to fatigue on isokinetic muscular strength in endurance athletes |
author |
Denadai, Benedito Sérgio [UNESP] |
author_facet |
Denadai, Benedito Sérgio [UNESP] Greco, Camila Coelho [UNESP] Tufik, Sergio De Mello, Marco Túlio |
author_role |
author |
author2 |
Greco, Camila Coelho [UNESP] Tufik, Sergio De Mello, Marco Túlio |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Denadai, Benedito Sérgio [UNESP] Greco, Camila Coelho [UNESP] Tufik, Sergio De Mello, Marco Túlio |
dc.subject.por.fl_str_mv |
Aerobic exercise Angular velocity Concentric Eccentric Fatigue |
topic |
Aerobic exercise Angular velocity Concentric Eccentric Fatigue |
description |
The objective of this study was to examine the effects of high intensity exhaustive running exercise on the muscular torque capacity of the knee extensors for two types of contraction (concentric and eccentric) at different angular velocities (60 and 180°/s) in well-trained runners. Eleven male runners specialized in middle and long-distance running volunteered to participate in this study. Initially each subject performed, on different days, two familiarization sessions on an isokinetic dynamometer and an incremental treadmill test to volitional exhaustion to determine the velocity associated with the onset of blood lactate accumulation (OBLA). The subjects then returned to the laboratory on two occasions, separated by at least seven days, to perform maximal isokinetic knee contractions at each of the velocities under eccentric (Ecc) and concentric (Con) conditions. Conducted randomly, one test was performed after a standardized warm-up period of 5 min at 50% VO_2max. The other test was performed 15 min after continuous running at OBLA until volitional exhaustion. Following this high intensity exercise there was a significant reduction of Con at 60°/s and a significant reduction of Ecc at both velocities. Percent strength losses after running exercise were significantly different between contraction types only at 180°/s. We can conclude that the reduction in isokinetic peak torque of the knee extensors after a session of high intensity exhaustive running exercise at OBLA depends on the contraction type and angular velocity. © 2007 - IOS Press and the authors. All rights reserved. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-01-01 2022-04-28T20:35:27Z 2022-04-28T20:35:27Z |
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/10.3233/ies-2007-0284 Isokinetics and Exercise Science, v. 15, n. 4, p. 281-285, 2007. 0959-3020 http://hdl.handle.net/11449/225012 10.3233/ies-2007-0284 2-s2.0-36549068711 |
url |
http://dx.doi.org/10.3233/ies-2007-0284 http://hdl.handle.net/11449/225012 |
identifier_str_mv |
Isokinetics and Exercise Science, v. 15, n. 4, p. 281-285, 2007. 0959-3020 10.3233/ies-2007-0284 2-s2.0-36549068711 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Isokinetics and Exercise Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
281-285 |
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_ |
1797789753214500864 |