Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience.
Our first aim was to compare the anaerobic threshold (AnT) determined by the incremental protocol with the reverse lactate threshold test (RLT), investigating the previous cycling experience effect. Secondarily, an alternative RLT application based on heart rate was proposed. Two groups (12 per grou...
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doaj-27ca5fae01614d5a98a4152e3ff1782e2020-11-25T02:45:01ZengPublic Library of Science (PLoS)PLoS ONE1932-62032018-01-01133e019431310.1371/journal.pone.0194313Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience.Leonardo Henrique Dalcheco MessiasEmanuel Elias Camolese PoliselFúlvia Barros Manchado-GobattoOur first aim was to compare the anaerobic threshold (AnT) determined by the incremental protocol with the reverse lactate threshold test (RLT), investigating the previous cycling experience effect. Secondarily, an alternative RLT application based on heart rate was proposed. Two groups (12 per group-according to cycling experience) were evaluated on cycle ergometer. The incremental protocol started at 25 W with increments of 25 W at each 3 minutes, and the AnT was calculated by bissegmentation, onset of blood lactate concentration and maximal deviation methods. The RLT was applied in two phases: a) lactate priming segment; and b) reverse segment; the AnT (AnTRLT) was calculated based on a second order polynomial function. The AnT from the RLT was calculated based on the heart rate (AnTRLT-HR) by the second order polynomial function. In regard of the Study 1, most of statistical procedures converged for similarity between the AnT determined from the bissegmentation method and AnTRLT. For 83% of non-experienced and 75% of experienced subjects the bias was 4% and 2%, respectively. In Study 2, no difference was found between the AnTRLT and AnTRLT-HR. For 83% of non-experienced and 91% of experienced subjects, the bias between AnTRLT and AnTRLT-HR was similar (i.e. 6%). In summary, the AnT determined by the incremental protocol and RLT are consistent. The AnT can be determined during the RLT via heart rate, improving its applicability. However, future studies are required to improve the agreement between variables.http://europepmc.org/articles/PMC5849329?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Leonardo Henrique Dalcheco Messias Emanuel Elias Camolese Polisel Fúlvia Barros Manchado-Gobatto |
spellingShingle |
Leonardo Henrique Dalcheco Messias Emanuel Elias Camolese Polisel Fúlvia Barros Manchado-Gobatto Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience. PLoS ONE |
author_facet |
Leonardo Henrique Dalcheco Messias Emanuel Elias Camolese Polisel Fúlvia Barros Manchado-Gobatto |
author_sort |
Leonardo Henrique Dalcheco Messias |
title |
Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience. |
title_short |
Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience. |
title_full |
Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience. |
title_fullStr |
Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience. |
title_full_unstemmed |
Advances of the reverse lactate threshold test: Non-invasive proposal based on heart rate and effect of previous cycling experience. |
title_sort |
advances of the reverse lactate threshold test: non-invasive proposal based on heart rate and effect of previous cycling experience. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2018-01-01 |
description |
Our first aim was to compare the anaerobic threshold (AnT) determined by the incremental protocol with the reverse lactate threshold test (RLT), investigating the previous cycling experience effect. Secondarily, an alternative RLT application based on heart rate was proposed. Two groups (12 per group-according to cycling experience) were evaluated on cycle ergometer. The incremental protocol started at 25 W with increments of 25 W at each 3 minutes, and the AnT was calculated by bissegmentation, onset of blood lactate concentration and maximal deviation methods. The RLT was applied in two phases: a) lactate priming segment; and b) reverse segment; the AnT (AnTRLT) was calculated based on a second order polynomial function. The AnT from the RLT was calculated based on the heart rate (AnTRLT-HR) by the second order polynomial function. In regard of the Study 1, most of statistical procedures converged for similarity between the AnT determined from the bissegmentation method and AnTRLT. For 83% of non-experienced and 75% of experienced subjects the bias was 4% and 2%, respectively. In Study 2, no difference was found between the AnTRLT and AnTRLT-HR. For 83% of non-experienced and 91% of experienced subjects, the bias between AnTRLT and AnTRLT-HR was similar (i.e. 6%). In summary, the AnT determined by the incremental protocol and RLT are consistent. The AnT can be determined during the RLT via heart rate, improving its applicability. However, future studies are required to improve the agreement between variables. |
url |
http://europepmc.org/articles/PMC5849329?pdf=render |
work_keys_str_mv |
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