Maximal lactate steady state estimated by different methods of anaerobic threshold
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng por |
Título da fonte: | Revista Brasileira de Cineantropometria & Desempenho Humano (Online) |
Texto Completo: | https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2012v14n3p264 |
Resumo: | The aim of this study was to compare anaerobic threshold (AT) as determined by four different methods with maximal lactate steady state (MLSS) in endurance runners. Nine moderately trained runners performed the following tests on different days: a maximal incremental exercise test to determine maximal oxygen uptake (VO2max), velocity at VO-2max (vVO2max), and blood lactate response; and two to five 30-min constant load tests to determine MLSS. Based on the incremental test, four methods of AT determination were used: AT1 – velocity at 3.5 mmol.L-1 blood lactate; AT2 – velocity corresponding to the minimum lactate-velocity equivalent plus 1.5 mmol.L-1; AT3 – velocity at Dmax; and AT4 – velocity before the second consecutive blood lactate increase greater than 0.5 mmol.L-1. There were no significant differences between MLSS and AT as determined by four different methods. However, the Bland-Altman analysis showed the extent of disagreement between variables when the subjects were analyzed individually. MLSS was significantly correlated with AT1 (r=0.68; p=0.04) and AT2 (r=0.79; p=0.01). Thus, although no significant differences were found between AT methods and MLSS, one should be cautious about using these methods interchangeably. |
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Revista Brasileira de Cineantropometria & Desempenho Humano (Online) |
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Maximal lactate steady state estimated by different methods of anaerobic thresholdMáximo estado estável de lactato estimado por diferentes métodos de determinaçãoThe aim of this study was to compare anaerobic threshold (AT) as determined by four different methods with maximal lactate steady state (MLSS) in endurance runners. Nine moderately trained runners performed the following tests on different days: a maximal incremental exercise test to determine maximal oxygen uptake (VO2max), velocity at VO-2max (vVO2max), and blood lactate response; and two to five 30-min constant load tests to determine MLSS. Based on the incremental test, four methods of AT determination were used: AT1 – velocity at 3.5 mmol.L-1 blood lactate; AT2 – velocity corresponding to the minimum lactate-velocity equivalent plus 1.5 mmol.L-1; AT3 – velocity at Dmax; and AT4 – velocity before the second consecutive blood lactate increase greater than 0.5 mmol.L-1. There were no significant differences between MLSS and AT as determined by four different methods. However, the Bland-Altman analysis showed the extent of disagreement between variables when the subjects were analyzed individually. MLSS was significantly correlated with AT1 (r=0.68; p=0.04) and AT2 (r=0.79; p=0.01). Thus, although no significant differences were found between AT methods and MLSS, one should be cautious about using these methods interchangeably.O objetivo deste estudo foi determinar e comparar o limiar anaeróbio (LAn) obtido por quatro diferentes métodos com o máximo estado estável de lactato (MLSS) em corredores de endurance. Nove corredores moderadamente treinados realizaram, em diferentes dias, os seguintes testes: um teste incremental máximo para determinação do consumo máximo de oxigênio (VO2max), velocidade correspondente ao VO2max (vVO-2max) e resposta do lactato sanguíneo e; dois a cinco testes de intensidade constante, com 30 min de duração, para determinação do MLSS. A partir do teste incremental, foram utilizados quatro métodos de determinação do LAn: LAn1 - velocidade correspondente a [La] fixa de 3,5 mmol.L-1; LAn2 - velocidade referente a [La] do menor equivalente [La]-velocidade somado com 1,5 mmol.L-1; LAn3 - velocidade correspondente ao Dmax; LAn4 - velocidade anterior ao segundo incremento consecutivo de [La] maior que 0,5 mmol.L-1. Não existiram diferenças significativas entre o MLSS e o LAn determinado pelos quatro métodos estudados. Entretanto, a analise de Bland-Altman expressou a extensão da discordância entre as variáveis quando os sujeitos foram analisados individualmente. Houve correlações significativas entre MLSS e LAn1 (r = 0,68; p = 0,04) e entre MLSS e o LAn2 (r = 0,79; p = 0,01). Assim, apesar de não haver diferença significativa entre os métodos de determinação do LAn com o MLSS, deve-se ter cautela para utiliza-los de forma intercambiável.Universidade Federal de Santa Catarina. Florianópolis, SC. Brasil2012-04-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion"Avaliado por Pares",Avaliado por ParesDescritiva correlacionalapplication/pdfapplication/pdfhttps://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2012v14n3p26410.1590/1980-0037.2012v14n3p264Brazilian Journal of Kinanthropometry and Human Performance; Vol. 14 No. 3 (2012); 264-275Revista Brasileira de Cineantropometria e Desempenho Humano; v. 14 n. 3 (2012); 264-2751980-00371415-8426reponame:Revista Brasileira de Cineantropometria & Desempenho Humano (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCengporhttps://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2012v14n3p264/21731https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2012v14n3p264/21732de Souza, Kristopher MendesGrossl, TalitaBabel Junior, Rubens Joséde Lucas, Ricardo DantasCosta, Vitor PereiraGuglielmo, Luiz Guilherme Antonacciinfo:eu-repo/semantics/openAccess2022-11-21T14:14:52Zoai:periodicos.ufsc.br:article/14219Revistahttps://periodicos.ufsc.br/index.php/rbcdh/PUBhttps://periodicos.ufsc.br/index.php/rbcdh/oairbcdh@contato.ufsc.br || portaldeperiodicos.bu@contato.ufsc.br1980-00371415-8426opendoar:2022-11-21T14:14:52Revista Brasileira de Cineantropometria & Desempenho Humano (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
Maximal lactate steady state estimated by different methods of anaerobic threshold Máximo estado estável de lactato estimado por diferentes métodos de determinação |
title |
Maximal lactate steady state estimated by different methods of anaerobic threshold |
spellingShingle |
Maximal lactate steady state estimated by different methods of anaerobic threshold de Souza, Kristopher Mendes |
title_short |
Maximal lactate steady state estimated by different methods of anaerobic threshold |
title_full |
Maximal lactate steady state estimated by different methods of anaerobic threshold |
title_fullStr |
Maximal lactate steady state estimated by different methods of anaerobic threshold |
title_full_unstemmed |
Maximal lactate steady state estimated by different methods of anaerobic threshold |
title_sort |
Maximal lactate steady state estimated by different methods of anaerobic threshold |
author |
de Souza, Kristopher Mendes |
author_facet |
de Souza, Kristopher Mendes Grossl, Talita Babel Junior, Rubens José de Lucas, Ricardo Dantas Costa, Vitor Pereira Guglielmo, Luiz Guilherme Antonacci |
author_role |
author |
author2 |
Grossl, Talita Babel Junior, Rubens José de Lucas, Ricardo Dantas Costa, Vitor Pereira Guglielmo, Luiz Guilherme Antonacci |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
de Souza, Kristopher Mendes Grossl, Talita Babel Junior, Rubens José de Lucas, Ricardo Dantas Costa, Vitor Pereira Guglielmo, Luiz Guilherme Antonacci |
description |
The aim of this study was to compare anaerobic threshold (AT) as determined by four different methods with maximal lactate steady state (MLSS) in endurance runners. Nine moderately trained runners performed the following tests on different days: a maximal incremental exercise test to determine maximal oxygen uptake (VO2max), velocity at VO-2max (vVO2max), and blood lactate response; and two to five 30-min constant load tests to determine MLSS. Based on the incremental test, four methods of AT determination were used: AT1 – velocity at 3.5 mmol.L-1 blood lactate; AT2 – velocity corresponding to the minimum lactate-velocity equivalent plus 1.5 mmol.L-1; AT3 – velocity at Dmax; and AT4 – velocity before the second consecutive blood lactate increase greater than 0.5 mmol.L-1. There were no significant differences between MLSS and AT as determined by four different methods. However, the Bland-Altman analysis showed the extent of disagreement between variables when the subjects were analyzed individually. MLSS was significantly correlated with AT1 (r=0.68; p=0.04) and AT2 (r=0.79; p=0.01). Thus, although no significant differences were found between AT methods and MLSS, one should be cautious about using these methods interchangeably. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-04-30 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion "Avaliado por Pares", Avaliado por Pares Descritiva correlacional |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2012v14n3p264 10.1590/1980-0037.2012v14n3p264 |
url |
https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2012v14n3p264 |
identifier_str_mv |
10.1590/1980-0037.2012v14n3p264 |
dc.language.iso.fl_str_mv |
eng por |
language |
eng por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2012v14n3p264/21731 https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2012v14n3p264/21732 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina. Florianópolis, SC. Brasil |
publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina. Florianópolis, SC. Brasil |
dc.source.none.fl_str_mv |
Brazilian Journal of Kinanthropometry and Human Performance; Vol. 14 No. 3 (2012); 264-275 Revista Brasileira de Cineantropometria e Desempenho Humano; v. 14 n. 3 (2012); 264-275 1980-0037 1415-8426 reponame:Revista Brasileira de Cineantropometria & Desempenho Humano (Online) instname:Universidade Federal de Santa Catarina (UFSC) instacron:UFSC |
instname_str |
Universidade Federal de Santa Catarina (UFSC) |
instacron_str |
UFSC |
institution |
UFSC |
reponame_str |
Revista Brasileira de Cineantropometria & Desempenho Humano (Online) |
collection |
Revista Brasileira de Cineantropometria & Desempenho Humano (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Cineantropometria & Desempenho Humano (Online) - Universidade Federal de Santa Catarina (UFSC) |
repository.mail.fl_str_mv |
rbcdh@contato.ufsc.br || portaldeperiodicos.bu@contato.ufsc.br |
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1789435122228920320 |