Effects of caffeine ingestion on endurance performance in mentally fatigued individuals
Azevedo R, Silva-Cavalcante MD, Gualano B, Lima-Silva AE, Bertuzzi R
European journal of applied physiology · 58 citas
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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 no declarada
Publicación
- Publicado
- 2016-09-30 · Eur J Appl Physiol · vol. 116 · número 11-12 · págs. 2293–2303
- Editorial
- Springer Science+Business Media
- Citado
- 96 citas · más que el 95% de estudios similares · 5.0× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 49 trabajos
- Acceso
- De pago
- Áreas de investigación
- Coffee research and impacts · Sports Performance and Training · Sleep and Work-Related Fatigue
- Palabras clave
- caffeine ingestion, mental fatigue, endurance performance, time to exhaustion, rating of perceived exertion, mood states, vigor, continuous performance test, blood lactate, electromyography
- MeSH
- humans, caffeine, central nervous system stimulants, treatment outcome, administration, oral, mental fatigue, affect, psychomotor performance, physical endurance, dose-response relationship, drug, male, physical exertion, young adult
5 autores
- Rafael de Almeida Azevedo🇧🇷Universidade de São Paulo
- Marcos David Silva‐Cavalcante🇧🇷Universidade de São Paulo; Universidade Federal de Pernambuco
- Bruno Gualano🇧🇷Universidade de São Paulo
- Adriano Eduardo Lima‐Silva🇧🇷Universidade Federal de Pernambuco
- Rômulo Bertuzzi🇧🇷 · autor de correspondenciaUniversidade de São Paulo
Resumen
El texto original del estudio, en el idioma en que se publicó.
Purpose
To examine the effects of caffeine ingestion on physiological and perceptual responses in mentally fatigued individuals.
Methods
Eight male physically active subjects completed four cycling constant-workload tests in four experimental conditions at 80 % of maximal power output: control (C), mental fatigue (MF), mental fatigue plus caffeine ingestion (5 mg/kg) (MF-CAF), and mental fatigue plus placebo (MF-PLA). The mental fatigue was induced by a continuous performance task A-X version (AX-CPT). Before and after the AX-CPT, the profile of mood state (POMS) and blood samples for lactate measurement were collected. Oxygen consumption ([Formula: see text]), rating of perceived exertion (RPE), and electromyography (EMG) activity were measured during the cycling test.
Results
The time to exhaustion in C, MF, MF-PLA, and MF-CAF were 251 ± 30, 222 ± 23, 248 ± 28, and 285 ± 42 s, respectively. Delta values (corrected by C condition) were higher in MF-CAF than MF (P = 0.031). MF-CAF reported higher Vigor scores when compared with C (P = 0.046) and MF (P = 0.020). RPE at the first minute was significantly higher in MF-PLA than in C (P = 0.050); at the second minute, RPE was higher in MF-PLA than in C (P = 0.049) and MF-CAF (P = 0.048). EMG activity was not different between the conditions.
Conclusions
Caffeine ingestion increased approximately 14 % endurance performance after the induction of mental fatigue. This effect was accompanied by a tendency to improvement in mood state (i.e., vigor). Therefore, caffeine ingestion can promote a beneficial effect on endurance performance in mentally fatigued individuals.
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