Metabolic regulation during sport events: factual interpretations and inadequate allegations

Detalhes bibliográficos
Autor(a) principal: Poortmans, Jacques Remy
Data de Publicação: 2013
Outros Autores: Carpentier, Alain
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Educação Física e Esporte (Online)
Texto Completo: https://www.revistas.usp.br/rbefe/article/view/63119
Resumo: .
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spelling Metabolic regulation during sport events: factual interpretations and inadequate allegationsMetabolic regulation during sport events: factual interpretations and inadequate allegationsTrainingEnzymesNon-equilibrium reactionsRegulatory pathways.Different fuels are available to generate ATP for muscle activities during sport events. Glycogen from striated muscles and liver stores may be converted to lactic acid or almost completely oxidized to carbon dioxide (CO2), triacylglycerol within the muscle itself and fatty acids from adipose tissue could be converted to CO2 in acting muscles, some free amino acids can be released within the muscle itself and from intestinal stores to sustain the amount of ATP generation indispensable for muscle contraction. All single biochemical reactions, but one, need one or several enzymes to activate the conversion of a substrate into a product. The energy transformation in biochemical reactions is led by application of so-called free energy. Reversible and non-reversible reactions within a metabolic pathway are dependent on specific enzymes near or far from equilibrium. Allosteric enzymes are regulatory enzymes that provide the direction in the pathway. A regulatory enzyme is either activated or inhibited by small regulators (ligands). A reversible substrate cycle between A and B is catalyzed by two enzymes with different fluxes. The need of ATP production for muscle contraction is under the leadership of regulatory enzymes and available substrate stores. The improvement of adapted metabolic reactions under sport training depends on the appropriate increase of regulatory enzymes within the glycolytic and oxidative pathways. The amount of some specific enzymes is increased by training in order to improve the maximum activity of the metabolic pathway. Unfortunately, several publications do not precisely implicate the appropriate enzyme(s) to explain or reject the adaptation induced by the training schedule. A few examples will illustrate the factual interpretation and the inadequate allegation.Universidade de São Paulo. Escola de Educação Física e Esporte2013-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/rbefe/article/view/6311910.1590/S1807-55092013005000020Revista Brasileira de Educação Física e Esporte; v. 27 n. 3 (2013); 493-506Revista Brasileira de Educação Física e Esporte; Vol. 27 Núm. 3 (2013); 493-506Brazilian journal of physical education and sport; Vol. 27 No. 3 (2013); 493-5061981-46901807-5509reponame:Revista Brasileira de Educação Física e Esporte (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/rbefe/article/view/63119/65910Copyright (c) 2017 Revista Brasileira de Educação Física e Esporteinfo:eu-repo/semantics/openAccessPoortmans, Jacques RemyCarpentier, Alain2013-10-10T19:10:11Zoai:revistas.usp.br:article/63119Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=1807-5509&lng=pt&nrm=isoPUBhttps://old.scielo.br/oai/scielo-oai.php||reveefe@usp.br1981-46901807-5509opendoar:2013-10-10T19:10:11Revista Brasileira de Educação Física e Esporte (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Metabolic regulation during sport events: factual interpretations and inadequate allegations
Metabolic regulation during sport events: factual interpretations and inadequate allegations
title Metabolic regulation during sport events: factual interpretations and inadequate allegations
spellingShingle Metabolic regulation during sport events: factual interpretations and inadequate allegations
Poortmans, Jacques Remy
Training
Enzymes
Non-equilibrium reactions
Regulatory pathways
title_short Metabolic regulation during sport events: factual interpretations and inadequate allegations
title_full Metabolic regulation during sport events: factual interpretations and inadequate allegations
title_fullStr Metabolic regulation during sport events: factual interpretations and inadequate allegations
title_full_unstemmed Metabolic regulation during sport events: factual interpretations and inadequate allegations
title_sort Metabolic regulation during sport events: factual interpretations and inadequate allegations
author Poortmans, Jacques Remy
author_facet Poortmans, Jacques Remy
Carpentier, Alain
author_role author
author2 Carpentier, Alain
author2_role author
dc.contributor.author.fl_str_mv Poortmans, Jacques Remy
Carpentier, Alain
dc.subject.por.fl_str_mv Training
Enzymes
Non-equilibrium reactions
Regulatory pathways
topic Training
Enzymes
Non-equilibrium reactions
Regulatory pathways
description .
publishDate 2013
dc.date.none.fl_str_mv 2013-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.revistas.usp.br/rbefe/article/view/63119
10.1590/S1807-55092013005000020
url https://www.revistas.usp.br/rbefe/article/view/63119
identifier_str_mv 10.1590/S1807-55092013005000020
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/rbefe/article/view/63119/65910
dc.rights.driver.fl_str_mv Copyright (c) 2017 Revista Brasileira de Educação Física e Esporte
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2017 Revista Brasileira de Educação Física e Esporte
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo. Escola de Educação Física e Esporte
publisher.none.fl_str_mv Universidade de São Paulo. Escola de Educação Física e Esporte
dc.source.none.fl_str_mv Revista Brasileira de Educação Física e Esporte; v. 27 n. 3 (2013); 493-506
Revista Brasileira de Educação Física e Esporte; Vol. 27 Núm. 3 (2013); 493-506
Brazilian journal of physical education and sport; Vol. 27 No. 3 (2013); 493-506
1981-4690
1807-5509
reponame:Revista Brasileira de Educação Física e Esporte (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Revista Brasileira de Educação Física e Esporte (Online)
collection Revista Brasileira de Educação Física e Esporte (Online)
repository.name.fl_str_mv Revista Brasileira de Educação Física e Esporte (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ||reveefe@usp.br
_version_ 1800222932509655040

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