Caffeine increases anaerobic work and restores cycling performance following a protocol designed to lower endogenous carbohydrate availability
Silva-Cavalcante MD, Correia-Oliveira CR, Santos RA, Lopes-Silva JP, Lima HM, Bertuzzi R, Duarte M, Bishop DJ, Lima-Silva AE
PloS one · 39 citas
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
- Gobierno
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
- Gobierno
- Ministerio de Economía y Competitividad
- Gobierno
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
Según 3 financiadores declarados y la declaración de financiación del texto completo.
Publicación
- Publicado
- 2013-08-19 · PLoS One · vol. 8 · número 8 · pág. e72025
- Editorial
- Public Library of Science
- Citado
- 56 citas · más que el 94% de estudios similares · 4.1× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 51 trabajos
- Acceso
- Acceso abierto (revista) · CC-BY
- Áreas de investigación
- Coffee research and impacts · Sports Performance and Training · Muscle metabolism and nutrition
- Palabras clave
- caffeine, carbohydrate availability, cycling time trial, energy expenditure, performance recovery, plasma lactate, oxygen consumption, muscle electrical activity, endurance performance
- MeSH
- humans, lactic acid, caffeine, cross-over studies, double-blind method, oxygen consumption, anaerobic threshold, heart rate, bicycling, adult, carbohydrate metabolism, diet, carbohydrate-restricted
9 autores
- Marcos David Silva‐Cavalcante🇧🇷Universidade de São Paulo; Universidade Federal de Alagoas
- Carlos Rafaell Correia‐Oliveira🇧🇷Universidade de São Paulo; Universidade Federal de Alagoas
- Ralmony Alcantara Santos🇧🇷Universidade Federal de Alagoas; Universidade Federal de São Paulo
- João Paulo Lopes‐Silva🇧🇷Universidade Federal de Alagoas
- Hessel Marani Lima🇧🇷Universidade Federal de Alagoas
- Rômulo Bertuzzi🇧🇷Universidade de São Paulo
- Marcos Duarte🇧🇷Universidade Federal do ABC
- David John Bishop🇦🇺Victoria University
- Adriano Eduardo Lima‐Silva🇧🇷Universidade Federal de Alagoas
Resumen
El texto original del estudio, en el idioma en que se publicó.
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 (-2.1%) 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.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial (CC BY).
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