Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development

Detalhes bibliográficos
Autor(a) principal: Gaspari, Arthur Fernandes, 1986-
Data de Publicação: 2021
Outros Autores: Chacon-Mikahil, Mara Patrícia Traina, 1965-
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório da Produção Científica e Intelectual da Unicamp
Texto Completo: https://hdl.handle.net/20.500.12733/3702
Resumo: Agradecimentos: The authors are thankful for the participant’s effort and thought-ful insights from Jenny Zhang
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spelling Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue developmentIsquemiaFadigaBlood flow restrictionSelf-paced exerciseAgradecimentos: The authors are thankful for the participant’s effort and thought-ful insights from Jenny ZhangAbstract: The present study analyzed the effects of local ischemia during endurance exercise on neuromuscular fatigue (NMF). Nine cyclists performed, in a counterbalanced order, two separate 4-km cycling time trials (TT) with (ISCH) or without (CONTR) induced local ischemia. NMF was characterized by using isometric maximal voluntary contractions (IMVC), whereas central [voluntary activation (VA)] and peripheral fatigue [peak torque of potentiated twitch (TwPt)] of knee extensors were evaluated using electrically evoked contractions performed before (PRE) and 1 min after (POST) the TT. Electromyographic activity (EMG), power output (PO), oxygen uptake (V?o2), and rating of perceived exertion (RPE) were also recorded. The decrease in IMVC (-15 ± 9% vs. -10 ± 8%, P = 0.66), VA (-4 ± 3% vs. -3 ± 3%, P = 0.46), and TwPt (-16 ± 7% vs. -19 ± 14%, P = 0.67) was similar in ISCH and CONTR. Endurance performance was drastically reduced in ISCH condition (512 ± 29 s) compared with CONTR (386 ± 17 s) (P < 0.001), which was accompanied by lower EMG, PO, and V?o2 responses (all P < 0.05). RPE was greater in ISCH compared with CONTR (P < 0.05), but the rate of change was similar throughout the TT (8.19 ± 2.59 vs. 7.81 ± 2.01 RPE.% of total time-1, P > 0.05). These results indicate that similar end-exercise NMF levels were accompanied by impaired endurance performance in ISCH compared with CONTR. These novel findings suggest that the local reduced oxygen availability affected the afferent feedback signals to the central nervous system, ultimately increasing perceived effort and reducing muscle activity and exercise intensity to avoid surpassing a sensory tolerance limit before the finish lineFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPFechadoUNIVERSIDADE ESTADUAL DE CAMPINASGaspari, Arthur Fernandes, 1986-Chacon-Mikahil, Mara Patrícia Traina, 1965-2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.12733/3702GASPARI, Arthur Fernandes; CHACON-MIKAHIL, Mara Patrícia Traina. Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development. American journal of physiology: regulatory, integrative and comparative physiology. Rockville, MD : American Physiological Society, 2021. Vol. 31 (mar., 2021), p. R812-R823. Disponível em: https://hdl.handle.net/20.500.12733/3702. Acesso em: 7 mai. 2024.Inglêsenghttps://acervus.unicamp.br/acervo/detalhe/1239687reponame:Repositório da Produção Científica e Intelectual da Unicampinstname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPinfo:eu-repo/semantics/openAccess2022-08-18T17:27:04Zoai:https://www.repositorio.unicamp.br/:1239687Repositório InstitucionalPUBhttp://repositorio.unicamp.br/oai/requestreposip@unicamp.bropendoar:2022-08-18T17:27:04Repositório da Produção Científica e Intelectual da Unicamp - Universidade Estadual de Campinas (UNICAMP)false
dc.title.none.fl_str_mv Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development
title Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development
spellingShingle Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development
Gaspari, Arthur Fernandes, 1986-
Isquemia
Fadiga
Blood flow restriction
Self-paced exercise
title_short Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development
title_full Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development
title_fullStr Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development
title_full_unstemmed Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development
title_sort Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development
author Gaspari, Arthur Fernandes, 1986-
author_facet Gaspari, Arthur Fernandes, 1986-
Chacon-Mikahil, Mara Patrícia Traina, 1965-
author_role author
author2 Chacon-Mikahil, Mara Patrícia Traina, 1965-
author2_role author
dc.contributor.none.fl_str_mv UNIVERSIDADE ESTADUAL DE CAMPINAS
dc.contributor.author.fl_str_mv Gaspari, Arthur Fernandes, 1986-
Chacon-Mikahil, Mara Patrícia Traina, 1965-
dc.subject.por.fl_str_mv Isquemia
Fadiga
Blood flow restriction
Self-paced exercise
topic Isquemia
Fadiga
Blood flow restriction
Self-paced exercise
description Agradecimentos: The authors are thankful for the participant’s effort and thought-ful insights from Jenny Zhang
publishDate 2021
dc.date.none.fl_str_mv 2021
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 https://hdl.handle.net/20.500.12733/3702
GASPARI, Arthur Fernandes; CHACON-MIKAHIL, Mara Patrícia Traina. Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development. American journal of physiology: regulatory, integrative and comparative physiology. Rockville, MD : American Physiological Society, 2021. Vol. 31 (mar., 2021), p. R812-R823. Disponível em: https://hdl.handle.net/20.500.12733/3702. Acesso em: 7 mai. 2024.
url https://hdl.handle.net/20.500.12733/3702
identifier_str_mv GASPARI, Arthur Fernandes; CHACON-MIKAHIL, Mara Patrícia Traina. Effects of induced local ischemia during a 4-km cycling time trial on neuromuscular fatigue development. American journal of physiology: regulatory, integrative and comparative physiology. Rockville, MD : American Physiological Society, 2021. Vol. 31 (mar., 2021), p. R812-R823. Disponível em: https://hdl.handle.net/20.500.12733/3702. Acesso em: 7 mai. 2024.
dc.language.iso.fl_str_mv Inglês
eng
language_invalid_str_mv Inglês
language eng
dc.relation.none.fl_str_mv https://acervus.unicamp.br/acervo/detalhe/1239687
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório da Produção Científica e Intelectual da Unicamp
instname:Universidade Estadual de Campinas (UNICAMP)
instacron:UNICAMP
instname_str Universidade Estadual de Campinas (UNICAMP)
instacron_str UNICAMP
institution UNICAMP
reponame_str Repositório da Produção Científica e Intelectual da Unicamp
collection Repositório da Produção Científica e Intelectual da Unicamp
repository.name.fl_str_mv Repositório da Produção Científica e Intelectual da Unicamp - Universidade Estadual de Campinas (UNICAMP)
repository.mail.fl_str_mv reposip@unicamp.br
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