Financiado en parte por Procter and Gamble
Effects of caffeine on mood and performance: a study of realistic consumption
Brice CF, Smith AP
Psychopharmacology · 73 citas
Etiquetas de revisión
Financiado por la industriaDatos neutrales que nuestra revisión registró sobre cómo se hizo este estudio. Describen el método, nunca si nos gusta el resultado.
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiado por la industria
- Empresa
- Procter and Gamble
- Gobierno
- Economic and Social Research Council
Según 2 financiadores declarados.
Publicación
- Publicado
- 2002-11-01 · Psychopharmacology (Berl) · vol. 164 · número 2 · págs. 188–192
- Editorial
- Springer Science+Business Media
- Citado
- 148 citas · más que el 91% de estudios similares · 3.2× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 23 trabajos
- Acceso
- De pago
- Áreas de investigación
- Coffee research and impacts · Sleep and Work-Related Fatigue · Human-Automation Interaction and Safety
- Palabras clave
- caffeine, mood, alertness, anxiety, cognitive performance, sustained attention, dual-task performance, coffee consumption
- MeSH
- saliva, humans, caffeine, central nervous system stimulants, drug administration schedule, double-blind method, affect, psychomotor performance, attention, reaction time, dose-response relationship, drug, coffee, adult, male
2 autores
- Carolyn F. Brice🇬🇧Cardiff University
- Andrew Paul Smith🇬🇧 · autor de correspondenciaCardiff University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Rationale
There is a vast literature on the behavioural effects of caffeine. Many of the studies have involved single administration of a large dose of caffeine that is not representative of the way in which caffeine is usually ingested. Further information is required, therefore, on the behavioural effects of realistic patterns of consumption.
Objectives
The present study aimed to determine whether a realistic drinking regime (multiple small doses - 4 x 65 mg over a 5-h period) produced the same effects as a single large dose (200 mg). The smaller doses were selected so that the amount of caffeine present in the body after 5 h would be equivalent to that found with the single dose.
Methods
A double-blind, placebo-controlled, within-subjects experiment was, therefore, carried out. The participants ( n=24) attended for four sessions. Each session started with a baseline measurement of mood and performance at 0930 hours. On two of the sessions, coffee was then consumed at 1000, 1100, 1200 and 1300 hours. In one of these sessions 65 mg caffeine was added to the de-caffeinated coffee. In the other two sessions, the participants consumed coffee at 1300 hours and 200 mg caffeine was added in one of the sessions. The volunteers completed the battery of tests again at 1500 hours.
Results
The results showed that in both consumption regimes caffeine led to increased alertness and anxiety and improved performance on simple and choice reactive tasks, a cognitive vigilance task, a task requiring sustained response and a dual task involving tracking and target detection.
Conclusions
These results suggest that previous findings from studies using a large single dose may be applicable to normal patterns of caffeine consumption.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial.
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