Estimate of the 3,5 MMOL.L-¹ lactate threshold by maximal and submaximal variables during treadmill incremental test
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista Brasileira de Cineantropometria & Desempenho Humano (Online) |
Texto Completo: | https://periodicos.ufsc.br/index.php/rbcdh/article/view/3765 |
Resumo: | In predictive models, there is a lack of studies that have associated maximal and submaximal variables to attain lactate threshold (LT). Therefore, the purpose of this paper was to investigate the possibility for predicting 3.5 mmol.l-1 LT velocity (V3.5) using maximal and submaximal variables. The heart rate (HR) corresponding to 12 km.h-1 velocity (HR12), the peak heart rate (HRPEAK), the velocity corresponding to HR of 170 bpm (V170) and the peak velocity (VPEAK) were the independent variables used. Forty-six runners underwent to progressive test with initial velocity between 6 and 10.8 km.h-1, and increments of 1.2 km.h-1 every three minutes. The subjects were randomly assigned to validation group (n= 30) or cross-validation group (n= 16). Multiple regression analysis (Enter selection) resulted in the following predictive equation (p< 0.05): V3.5 (km.h-1)= -3.650 + (1.042 x VPEAK), with SEE= 1.2 km.h-1 (7.7%) and R²= 0.74. There were no significant differences between measured and predicted V3.5 values in validation group (r= 0.86) or in cross-validation group (r= 0.79). Entering the variables HR12, HRPEAK or V170 did not increase model accuracy. From these results, it is suggested that the use of VPEAK accurately predict 3.5 mmol.l-1 LT velocity. |
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Estimate of the 3,5 MMOL.L-¹ lactate threshold by maximal and submaximal variables during treadmill incremental testEstimativa da velocidade do limiar de lactato de 3,5 MMOLL-¹ a partir de variáveis máximas e submáximas obtidas em teste incremental em esteiraIn predictive models, there is a lack of studies that have associated maximal and submaximal variables to attain lactate threshold (LT). Therefore, the purpose of this paper was to investigate the possibility for predicting 3.5 mmol.l-1 LT velocity (V3.5) using maximal and submaximal variables. The heart rate (HR) corresponding to 12 km.h-1 velocity (HR12), the peak heart rate (HRPEAK), the velocity corresponding to HR of 170 bpm (V170) and the peak velocity (VPEAK) were the independent variables used. Forty-six runners underwent to progressive test with initial velocity between 6 and 10.8 km.h-1, and increments of 1.2 km.h-1 every three minutes. The subjects were randomly assigned to validation group (n= 30) or cross-validation group (n= 16). Multiple regression analysis (Enter selection) resulted in the following predictive equation (p< 0.05): V3.5 (km.h-1)= -3.650 + (1.042 x VPEAK), with SEE= 1.2 km.h-1 (7.7%) and R²= 0.74. There were no significant differences between measured and predicted V3.5 values in validation group (r= 0.86) or in cross-validation group (r= 0.79). Entering the variables HR12, HRPEAK or V170 did not increase model accuracy. From these results, it is suggested that the use of VPEAK accurately predict 3.5 mmol.l-1 LT velocity.Em modelos preditivos, há uma ausência de estudos que tenham associado variáveis máximas e submáximas para a obtenção dos limiares de lactato. Desta maneira, o objetivo deste estudo foi verificar a possibilidade de estimativa do limiar de lactato, referente à concentração de lactato sangüíneo de 3,5 mmol.l-1 (LL3,5), a partir de variáveis máximas e submáximas obtidas em protocolo progressivo, em esteira rolante. Como variáveis preditoras, foram utilizadas a freqüência cardíaca (FC) referente à velocidade de 12 km.h-1 (FC12), a FC de pico (FCPICO), a velocidade correspondente à FC de 170 bpm (VEL170) e a velocidade de pico (VELPICO). Após executar protocolo progressivo, com velocidade inicial entre 6,0 e 10,8 km.h-1, e incrementos de 1,2 km.h-1 a cada estágio de 3 minutos 5, 46 atletas aeróbios foram divididos aleatoriamente em grupo de validação (n= 30) e grupo de validação cruzada (n= 16). A análise de regressão múltipla (método Enter) resultou na seguinte equação de predição (p< 0,05): LL3,5 (km.h1)= -3,650 + (1,042 x VELPICO), com EPE de 1,2 km.h1 (7,7%) e R² de 0,74. Não houve diferenças significativas entre os valores de LL3,5 medido e predito no grupo de validação (r= 0,86), e no grupo de validação cruzada (r= 0,79). A adição de FC12, VEL170 ou FCPICO não melhorou significativamente a qualidade do modelo. A partir destes resultados, sugerimos que a VELPICO pode estimar satisfatoriamente a velocidade do LL3,5, sem a necessidade da utilização da FCPICO ou de outras variáveis submáximas.Universidade Federal de Santa Catarina. Florianópolis, SC. Brasil2006-06-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion"Avaliado por Pares",Avaliado por ParesDescritivaapplication/pdfapplication/pdfhttps://periodicos.ufsc.br/index.php/rbcdh/article/view/376510.1590/%xBrazilian Journal of Kinanthropometry and Human Performance; Vol. 8 No. 1 (2006); 58-63Revista Brasileira de Cineantropometria e Desempenho Humano; v. 8 n. 1 (2006); 58-631980-00371415-8426reponame:Revista Brasileira de Cineantropometria & Desempenho Humano (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCporhttps://periodicos.ufsc.br/index.php/rbcdh/article/view/3765/3209https://periodicos.ufsc.br/index.php/rbcdh/article/view/3765/16691Pires, Flavio de OliveiraKiss, Maria Augusta Peduti Dal´MolinOliveira, Fernando Roberto deinfo:eu-repo/semantics/openAccess2018-09-12T09:43:31Zoai:periodicos.ufsc.br:article/3765Revistahttps://periodicos.ufsc.br/index.php/rbcdh/PUBhttps://periodicos.ufsc.br/index.php/rbcdh/oairbcdh@contato.ufsc.br || portaldeperiodicos.bu@contato.ufsc.br1980-00371415-8426opendoar:2018-09-12T09:43:31Revista Brasileira de Cineantropometria & Desempenho Humano (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
Estimate of the 3,5 MMOL.L-¹ lactate threshold by maximal and submaximal variables during treadmill incremental test Estimativa da velocidade do limiar de lactato de 3,5 MMOLL-¹ a partir de variáveis máximas e submáximas obtidas em teste incremental em esteira |
title |
Estimate of the 3,5 MMOL.L-¹ lactate threshold by maximal and submaximal variables during treadmill incremental test |
spellingShingle |
Estimate of the 3,5 MMOL.L-¹ lactate threshold by maximal and submaximal variables during treadmill incremental test Pires, Flavio de Oliveira |
title_short |
Estimate of the 3,5 MMOL.L-¹ lactate threshold by maximal and submaximal variables during treadmill incremental test |
title_full |
Estimate of the 3,5 MMOL.L-¹ lactate threshold by maximal and submaximal variables during treadmill incremental test |
title_fullStr |
Estimate of the 3,5 MMOL.L-¹ lactate threshold by maximal and submaximal variables during treadmill incremental test |
title_full_unstemmed |
Estimate of the 3,5 MMOL.L-¹ lactate threshold by maximal and submaximal variables during treadmill incremental test |
title_sort |
Estimate of the 3,5 MMOL.L-¹ lactate threshold by maximal and submaximal variables during treadmill incremental test |
author |
Pires, Flavio de Oliveira |
author_facet |
Pires, Flavio de Oliveira Kiss, Maria Augusta Peduti Dal´Molin Oliveira, Fernando Roberto de |
author_role |
author |
author2 |
Kiss, Maria Augusta Peduti Dal´Molin Oliveira, Fernando Roberto de |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Pires, Flavio de Oliveira Kiss, Maria Augusta Peduti Dal´Molin Oliveira, Fernando Roberto de |
description |
In predictive models, there is a lack of studies that have associated maximal and submaximal variables to attain lactate threshold (LT). Therefore, the purpose of this paper was to investigate the possibility for predicting 3.5 mmol.l-1 LT velocity (V3.5) using maximal and submaximal variables. The heart rate (HR) corresponding to 12 km.h-1 velocity (HR12), the peak heart rate (HRPEAK), the velocity corresponding to HR of 170 bpm (V170) and the peak velocity (VPEAK) were the independent variables used. Forty-six runners underwent to progressive test with initial velocity between 6 and 10.8 km.h-1, and increments of 1.2 km.h-1 every three minutes. The subjects were randomly assigned to validation group (n= 30) or cross-validation group (n= 16). Multiple regression analysis (Enter selection) resulted in the following predictive equation (p< 0.05): V3.5 (km.h-1)= -3.650 + (1.042 x VPEAK), with SEE= 1.2 km.h-1 (7.7%) and R²= 0.74. There were no significant differences between measured and predicted V3.5 values in validation group (r= 0.86) or in cross-validation group (r= 0.79). Entering the variables HR12, HRPEAK or V170 did not increase model accuracy. From these results, it is suggested that the use of VPEAK accurately predict 3.5 mmol.l-1 LT velocity. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-06-12 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion "Avaliado por Pares", Avaliado por Pares Descritiva |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufsc.br/index.php/rbcdh/article/view/3765 10.1590/%x |
url |
https://periodicos.ufsc.br/index.php/rbcdh/article/view/3765 |
identifier_str_mv |
10.1590/%x |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsc.br/index.php/rbcdh/article/view/3765/3209 https://periodicos.ufsc.br/index.php/rbcdh/article/view/3765/16691 |
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. 8 No. 1 (2006); 58-63 Revista Brasileira de Cineantropometria e Desempenho Humano; v. 8 n. 1 (2006); 58-63 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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1789435119430270976 |