Effect of a previous high intensity running exercise on isokinetic muscular strength in individuals with different training backgrounds

Detalhes bibliográficos
Autor(a) principal: Denadai, Benedito Sergio [UNESP]
Data de Publicação: 2010
Outros Autores: Corvino, Rogerio Bulhoes [UNESP], Greco, Camila Coelho [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3233/IES-2010-0362
http://hdl.handle.net/11449/20741
Resumo: The objective of this study was to compare the effects of high intensity running exercise on the strength of the knee extensors at concentric and eccentric conditions in individuals with different training background. Sixteen physically active (SED), 11 endurance-trained (ET) and 7 strength-trained (ST) subjects volunteered to participate in the study. Initially each subject performed, on different days, one familiarization session on an isokinetic dynamometer and an incremental treadmill test to volitional exhaustion to determine the velocity at the onset of blood lactate accumulation (OBLA). The subjects then returned to the laboratory on two experimental sessions, separated by at least five days, to perform maximal isokinetic eccentric (E) and concentric (C) contractions of the quadriceps at 180 degrees/s. One session was performed after a standardized warm-up period (5 min at 50% VO(2)max) and the other session was performed after a continuous running at 95% OBLA. The duration of this session was estimated to a caloric expenditure around 500 Kcal. Following this high intensity exercise there was a significant reduction in the peak torque in E in all groups. The percent strength loss in E following the running exercise was statistically higher in ST (16.5%) when compared to SED (6.5%) and ET (7.2%). We thus conclude that the reduction in isokinetic peak torque of the knee extensors after a session of high intensity running exercise at 95% OBLA depends on the contraction type and training background.
id UNSP_6b9f18b24807bb4714d0f5af5ef82859
oai_identifier_str oai:repositorio.unesp.br:11449/20741
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling Effect of a previous high intensity running exercise on isokinetic muscular strength in individuals with different training backgroundsConcentriceccentricaerobic exercisefatigueThe objective of this study was to compare the effects of high intensity running exercise on the strength of the knee extensors at concentric and eccentric conditions in individuals with different training background. Sixteen physically active (SED), 11 endurance-trained (ET) and 7 strength-trained (ST) subjects volunteered to participate in the study. Initially each subject performed, on different days, one familiarization session on an isokinetic dynamometer and an incremental treadmill test to volitional exhaustion to determine the velocity at the onset of blood lactate accumulation (OBLA). The subjects then returned to the laboratory on two experimental sessions, separated by at least five days, to perform maximal isokinetic eccentric (E) and concentric (C) contractions of the quadriceps at 180 degrees/s. One session was performed after a standardized warm-up period (5 min at 50% VO(2)max) and the other session was performed after a continuous running at 95% OBLA. The duration of this session was estimated to a caloric expenditure around 500 Kcal. Following this high intensity exercise there was a significant reduction in the peak torque in E in all groups. The percent strength loss in E following the running exercise was statistically higher in ST (16.5%) when compared to SED (6.5%) and ET (7.2%). We thus conclude that the reduction in isokinetic peak torque of the knee extensors after a session of high intensity running exercise at 95% OBLA depends on the contraction type and training background.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNESP, Human Performance Lab, BR-13506900 Rio Claro, SP, BrazilUNESP, Human Performance Lab, BR-13506900 Rio Claro, SP, BrazilIOS PressUniversidade Estadual Paulista (Unesp)Denadai, Benedito Sergio [UNESP]Corvino, Rogerio Bulhoes [UNESP]Greco, Camila Coelho [UNESP]2013-09-30T18:49:09Z2014-05-20T13:58:23Z2013-09-30T18:49:09Z2014-05-20T13:58:23Z2010-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article15-21http://dx.doi.org/10.3233/IES-2010-0362Isokinetics and Exercise Science. Amsterdam: IOS Press, v. 18, n. 1, p. 15-21, 2010.0959-3020http://hdl.handle.net/11449/2074110.3233/IES-2010-0362WOS:00027672570000319074792508330337416129894680689Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIsokinetics and Exercise Science0.5680,222info:eu-repo/semantics/openAccess2021-10-23T11:48:03Zoai:repositorio.unesp.br:11449/20741Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:09:45.646121Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effect of a previous high intensity running exercise on isokinetic muscular strength in individuals with different training backgrounds
title Effect of a previous high intensity running exercise on isokinetic muscular strength in individuals with different training backgrounds
spellingShingle Effect of a previous high intensity running exercise on isokinetic muscular strength in individuals with different training backgrounds
Denadai, Benedito Sergio [UNESP]
Concentric
eccentric
aerobic exercise
fatigue
title_short Effect of a previous high intensity running exercise on isokinetic muscular strength in individuals with different training backgrounds
title_full Effect of a previous high intensity running exercise on isokinetic muscular strength in individuals with different training backgrounds
title_fullStr Effect of a previous high intensity running exercise on isokinetic muscular strength in individuals with different training backgrounds
title_full_unstemmed Effect of a previous high intensity running exercise on isokinetic muscular strength in individuals with different training backgrounds
title_sort Effect of a previous high intensity running exercise on isokinetic muscular strength in individuals with different training backgrounds
author Denadai, Benedito Sergio [UNESP]
author_facet Denadai, Benedito Sergio [UNESP]
Corvino, Rogerio Bulhoes [UNESP]
Greco, Camila Coelho [UNESP]
author_role author
author2 Corvino, Rogerio Bulhoes [UNESP]
Greco, Camila Coelho [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Denadai, Benedito Sergio [UNESP]
Corvino, Rogerio Bulhoes [UNESP]
Greco, Camila Coelho [UNESP]
dc.subject.por.fl_str_mv Concentric
eccentric
aerobic exercise
fatigue
topic Concentric
eccentric
aerobic exercise
fatigue
description The objective of this study was to compare the effects of high intensity running exercise on the strength of the knee extensors at concentric and eccentric conditions in individuals with different training background. Sixteen physically active (SED), 11 endurance-trained (ET) and 7 strength-trained (ST) subjects volunteered to participate in the study. Initially each subject performed, on different days, one familiarization session on an isokinetic dynamometer and an incremental treadmill test to volitional exhaustion to determine the velocity at the onset of blood lactate accumulation (OBLA). The subjects then returned to the laboratory on two experimental sessions, separated by at least five days, to perform maximal isokinetic eccentric (E) and concentric (C) contractions of the quadriceps at 180 degrees/s. One session was performed after a standardized warm-up period (5 min at 50% VO(2)max) and the other session was performed after a continuous running at 95% OBLA. The duration of this session was estimated to a caloric expenditure around 500 Kcal. Following this high intensity exercise there was a significant reduction in the peak torque in E in all groups. The percent strength loss in E following the running exercise was statistically higher in ST (16.5%) when compared to SED (6.5%) and ET (7.2%). We thus conclude that the reduction in isokinetic peak torque of the knee extensors after a session of high intensity running exercise at 95% OBLA depends on the contraction type and training background.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
2013-09-30T18:49:09Z
2013-09-30T18:49:09Z
2014-05-20T13:58:23Z
2014-05-20T13:58:23Z
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-2010-0362
Isokinetics and Exercise Science. Amsterdam: IOS Press, v. 18, n. 1, p. 15-21, 2010.
0959-3020
http://hdl.handle.net/11449/20741
10.3233/IES-2010-0362
WOS:000276725700003
1907479250833033
7416129894680689
url http://dx.doi.org/10.3233/IES-2010-0362
http://hdl.handle.net/11449/20741
identifier_str_mv Isokinetics and Exercise Science. Amsterdam: IOS Press, v. 18, n. 1, p. 15-21, 2010.
0959-3020
10.3233/IES-2010-0362
WOS:000276725700003
1907479250833033
7416129894680689
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Isokinetics and Exercise Science
0.568
0,222
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 15-21
dc.publisher.none.fl_str_mv IOS Press
publisher.none.fl_str_mv IOS Press
dc.source.none.fl_str_mv Web of Science
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_ 1808128764758982656