Caffeine Increases Anaerobic Work and Restores Cycling Performance following a Protocol Designed to Lower Endogenous Carbohydrate Availability
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | https://repositorio.unifesp.br/handle/11600/36654 https://dx.doi.org/10.1371/journal.pone.0072025 |
Resumo: | The purpose this study was to examine the effects of caffeine ingestion on performance and energy expenditure (anaerobic and aerobic contribution) during a 4-km cycling time trial (TT) performed after a carbohydrate (CHO) availability-lowering exercise protocol. After preliminary and familiarization trials, seven amateur cyclists performed three 4-km cycling TT in a double-blind, randomized and crossover design. the trials were performed either after no previous exercise (CON), or after a CHO availability-lowering exercise protocol (DEP) performed in the previous evening, followed by either placebo (DEP-PLA) or 5 mg.kg(-1) of caffeine intake (DEP-CAF) 1 hour before the trial. Performance was reduced (22.1%) in DEP-PLA vs CON (421.0 +/- 12.3 vs 412.4 +/- 9.7 s). However, performance was restored in DEP-CAF (404.6 +/- 17.1 s) compared with DEP-PLA, while no differences were found between DEP-CAF and CON. the anaerobic contribution was increased in DEP-CAF compared with both DEP-PLA and CON (67.4 +/- 14.91, 47. 3 +/- 14.6 and 55.3 +/- 14.0 W, respectively), and this was more pronounced in the first 3 km of the trial. Similarly, total anaerobic work was higher in DEP-CAF than in the other conditions. the integrated electromyographic activity, plasma lactate concentration, oxygen uptake, aerobic contribution and total aerobic work were not different between the conditions. the reduction in performance associated with low CHO availability is reversed with caffeine ingestion due to a higher anaerobic contribution, suggesting that caffeine could access an anaerobic reserve'' that is not used under normal conditions. |
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Silva-Cavalcante, Marcos DavidCorreia-Oliveira, Carlos RafaellSantos, Ralmony de Alcantara [UNIFESP]Lopes-Silva, Joao PauloLima, Hessel MaraniBertuzzi, RomuloDuarte, MarcosBishop, David JohnLima-Silva, Adriano EduardoUniv Fed AlagoasUniversidade de São Paulo (USP)Universidade Federal de São Paulo (UNIFESP)Universidade Federal do ABC (UFABC)Victoria Univ2016-01-24T14:34:17Z2016-01-24T14:34:17Z2013-08-19Plos One. San Francisco: Public Library Science, v. 8, n. 8, 10 p., 2013.1932-6203https://repositorio.unifesp.br/handle/11600/36654https://dx.doi.org/10.1371/journal.pone.0072025WOS000323425700122.pdf10.1371/journal.pone.0072025WOS:000323425700122The purpose this study was to examine the effects of caffeine ingestion on performance and energy expenditure (anaerobic and aerobic contribution) during a 4-km cycling time trial (TT) performed after a carbohydrate (CHO) availability-lowering exercise protocol. After preliminary and familiarization trials, seven amateur cyclists performed three 4-km cycling TT in a double-blind, randomized and crossover design. the trials were performed either after no previous exercise (CON), or after a CHO availability-lowering exercise protocol (DEP) performed in the previous evening, followed by either placebo (DEP-PLA) or 5 mg.kg(-1) of caffeine intake (DEP-CAF) 1 hour before the trial. Performance was reduced (22.1%) in DEP-PLA vs CON (421.0 +/- 12.3 vs 412.4 +/- 9.7 s). However, performance was restored in DEP-CAF (404.6 +/- 17.1 s) compared with DEP-PLA, while no differences were found between DEP-CAF and CON. the anaerobic contribution was increased in DEP-CAF compared with both DEP-PLA and CON (67.4 +/- 14.91, 47. 3 +/- 14.6 and 55.3 +/- 14.0 W, respectively), and this was more pronounced in the first 3 km of the trial. Similarly, total anaerobic work was higher in DEP-CAF than in the other conditions. the integrated electromyographic activity, plasma lactate concentration, oxygen uptake, aerobic contribution and total aerobic work were not different between the conditions. the reduction in performance associated with low CHO availability is reversed with caffeine ingestion due to a higher anaerobic contribution, suggesting that caffeine could access an anaerobic reserve'' that is not used under normal conditions.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Univ Fed Alagoas, Fac Nutr, Sports Sci Res Grp, Maceio, Alagoas, BrazilUniv São Paulo, Sch Phys Educ & Sport, Endurance Performance Res Grp, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Med, Div Nephrol, São Paulo, BrazilFed Univ ABC, Fac Biomed Engn, São Paulo, BrazilVictoria Univ, ISEAL, Melbourne, Vic 8001, AustraliaUniversidade Federal de São Paulo, Dept Med, Div Nephrol, São Paulo, BrazilCAPES: MEC/CAPES 29/2010Web of Science10engPublic Library SciencePlos OneCaffeine Increases Anaerobic Work and Restores Cycling Performance following a Protocol Designed to Lower Endogenous Carbohydrate Availabilityinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESPORIGINALWOS000323425700122.pdfapplication/pdf503020${dspace.ui.url}/bitstream/11600/36654/1/WOS000323425700122.pdf936ce9fdf62824e09c43cca1033db8c1MD51open accessTEXTWOS000323425700122.pdf.txtWOS000323425700122.pdf.txtExtracted texttext/plain54872${dspace.ui.url}/bitstream/11600/36654/2/WOS000323425700122.pdf.txt24728b751571c123e4485fdc3f4f6bcbMD52open access11600/366542023-08-01 13:52:22.852open accessoai:repositorio.unifesp.br:11600/36654Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestopendoar:34652023-08-01T16:52:22Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.en.fl_str_mv |
Caffeine Increases Anaerobic Work and Restores Cycling Performance following a Protocol Designed to Lower Endogenous Carbohydrate Availability |
title |
Caffeine Increases Anaerobic Work and Restores Cycling Performance following a Protocol Designed to Lower Endogenous Carbohydrate Availability |
spellingShingle |
Caffeine Increases Anaerobic Work and Restores Cycling Performance following a Protocol Designed to Lower Endogenous Carbohydrate Availability Silva-Cavalcante, Marcos David |
title_short |
Caffeine Increases Anaerobic Work and Restores Cycling Performance following a Protocol Designed to Lower Endogenous Carbohydrate Availability |
title_full |
Caffeine Increases Anaerobic Work and Restores Cycling Performance following a Protocol Designed to Lower Endogenous Carbohydrate Availability |
title_fullStr |
Caffeine Increases Anaerobic Work and Restores Cycling Performance following a Protocol Designed to Lower Endogenous Carbohydrate Availability |
title_full_unstemmed |
Caffeine Increases Anaerobic Work and Restores Cycling Performance following a Protocol Designed to Lower Endogenous Carbohydrate Availability |
title_sort |
Caffeine Increases Anaerobic Work and Restores Cycling Performance following a Protocol Designed to Lower Endogenous Carbohydrate Availability |
author |
Silva-Cavalcante, Marcos David |
author_facet |
Silva-Cavalcante, Marcos David Correia-Oliveira, Carlos Rafaell Santos, Ralmony de Alcantara [UNIFESP] Lopes-Silva, Joao Paulo Lima, Hessel Marani Bertuzzi, Romulo Duarte, Marcos Bishop, David John Lima-Silva, Adriano Eduardo |
author_role |
author |
author2 |
Correia-Oliveira, Carlos Rafaell Santos, Ralmony de Alcantara [UNIFESP] Lopes-Silva, Joao Paulo Lima, Hessel Marani Bertuzzi, Romulo Duarte, Marcos Bishop, David John Lima-Silva, Adriano Eduardo |
author2_role |
author author author author author author author author |
dc.contributor.institution.none.fl_str_mv |
Univ Fed Alagoas Universidade de São Paulo (USP) Universidade Federal de São Paulo (UNIFESP) Universidade Federal do ABC (UFABC) Victoria Univ |
dc.contributor.author.fl_str_mv |
Silva-Cavalcante, Marcos David Correia-Oliveira, Carlos Rafaell Santos, Ralmony de Alcantara [UNIFESP] Lopes-Silva, Joao Paulo Lima, Hessel Marani Bertuzzi, Romulo Duarte, Marcos Bishop, David John Lima-Silva, Adriano Eduardo |
description |
The purpose this study was to examine the effects of caffeine ingestion on performance and energy expenditure (anaerobic and aerobic contribution) during a 4-km cycling time trial (TT) performed after a carbohydrate (CHO) availability-lowering exercise protocol. After preliminary and familiarization trials, seven amateur cyclists performed three 4-km cycling TT in a double-blind, randomized and crossover design. the trials were performed either after no previous exercise (CON), or after a CHO availability-lowering exercise protocol (DEP) performed in the previous evening, followed by either placebo (DEP-PLA) or 5 mg.kg(-1) of caffeine intake (DEP-CAF) 1 hour before the trial. Performance was reduced (22.1%) in DEP-PLA vs CON (421.0 +/- 12.3 vs 412.4 +/- 9.7 s). However, performance was restored in DEP-CAF (404.6 +/- 17.1 s) compared with DEP-PLA, while no differences were found between DEP-CAF and CON. the anaerobic contribution was increased in DEP-CAF compared with both DEP-PLA and CON (67.4 +/- 14.91, 47. 3 +/- 14.6 and 55.3 +/- 14.0 W, respectively), and this was more pronounced in the first 3 km of the trial. Similarly, total anaerobic work was higher in DEP-CAF than in the other conditions. the integrated electromyographic activity, plasma lactate concentration, oxygen uptake, aerobic contribution and total aerobic work were not different between the conditions. the reduction in performance associated with low CHO availability is reversed with caffeine ingestion due to a higher anaerobic contribution, suggesting that caffeine could access an anaerobic reserve'' that is not used under normal conditions. |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013-08-19 |
dc.date.accessioned.fl_str_mv |
2016-01-24T14:34:17Z |
dc.date.available.fl_str_mv |
2016-01-24T14:34:17Z |
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.citation.fl_str_mv |
Plos One. San Francisco: Public Library Science, v. 8, n. 8, 10 p., 2013. |
dc.identifier.uri.fl_str_mv |
https://repositorio.unifesp.br/handle/11600/36654 https://dx.doi.org/10.1371/journal.pone.0072025 |
dc.identifier.issn.none.fl_str_mv |
1932-6203 |
dc.identifier.file.none.fl_str_mv |
WOS000323425700122.pdf |
dc.identifier.doi.none.fl_str_mv |
10.1371/journal.pone.0072025 |
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WOS:000323425700122 |
identifier_str_mv |
Plos One. San Francisco: Public Library Science, v. 8, n. 8, 10 p., 2013. 1932-6203 WOS000323425700122.pdf 10.1371/journal.pone.0072025 WOS:000323425700122 |
url |
https://repositorio.unifesp.br/handle/11600/36654 https://dx.doi.org/10.1371/journal.pone.0072025 |
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