Caffeine improves reaction time, vigilance and logical reasoning during extended periods with restricted opportunities for sleep
Kamimori GH, McLellan TM, Tate CM, Voss DM, Niro P, Lieberman HR
Psychopharmacology · 62 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
- U.S. Department of Defense
- Gobierno
- U.S. Department of Energy
- Gobierno
- Oak Ridge Institute for Science and Education
- Gobierno
- Medical Research and Materiel Command
- Gobierno
- U.S. Army Medical Research and Development Command
Según 5 financiadores declarados.
Publicación
- Publicado
- 2014-12-20 · Psychopharmacology (Berl) · vol. 232 · número 12 · págs. 2031–2042
- Editorial
- Springer Science+Business Media
- Citado
- 97 citas · más que el 94% de estudios similares · 4.9× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 64 trabajos
- Acceso
- Acceso abierto (revista híbrida) · CC-BY
- Áreas de investigación
- Sleep and Work-Related Fatigue · Coffee research and impacts · Sleep and Wakefulness Research
- Palabras clave
- caffeine, cognitive function, sustained attention, reaction time, logical reasoning, sustained wakefulness, sleep deprivation, military personnel, special forces, psychomotor vigilance, event detection, occupational safety
- MeSH
- humans, caffeine, central nervous system stimulants, motor activity, cognition, psychomotor performance, arousal, attention, wakefulness, reaction time, sleep, adult, military personnel, male, young adult
6 autores
- Gary H. Kamimori🇺🇸Walter Reed Army Institute of Research
- Tom M. McLellan🇨🇦 · autor de correspondenciaDefence Research and Development Canada
- Charmaine M. TateNew Zealand Defence Force
- David VossNew Zealand Defence Force
- Phil J. Niro🇺🇸U.S. Army Research Institute of Environmental Medicine; United States Army
- Harris R. Lieberman🇺🇸U.S. Army Research Institute of Environmental Medicine; United States Army
Resumen
El texto original del estudio, en el idioma en que se publicó.
Rationale
Various occupational groups are required to maintain optimal physical and cognitive function during overnight periods of wakefulness, often with less than optimal sleep. Strategies are required to help mitigate the impairments in cognitive function to help sustain workplace safety and productivity.
Objectives
To test the effectiveness of repeated 200 mg doses of caffeine on cognitive function and live-fire marksmanship with soldiers during three successive nights of sustained wakefulness followed by 4-h afternoon sleep periods.
Methods
Twenty Special Forces personnel (28.6 ± 4.7 years, 177.6 ± 7.5 cm and 81.2 ± 8.0 kg) were randomly assigned to receive four 200-mg doses of caffeine (n = 10) or placebo (n = 10) during the late evening and early morning hours during three successive days. An afternoon 4-h sleep period followed. The psychomotor (PVT) and field (FVT) vigilance, logical reasoning (LRT) tests and a vigilance monitor assessed cognitive function throughout the study. Live-fire marksmanship requiring friend-foe discrimination was assessed.
Results
Caffeine maintained speed on the PVT (p < 0.02), improved detection of events during FVT (p < 0.001), increased number of correct responses to stimuli as assessed by the vigilance monitor (p < 0.001) and increased response speed during the LRT (p < 0.001) throughout the three overnight testing periods. Live-fire marksmanship was not altered by caffeine.
Conclusions
A total daily dose of 800 mg caffeine during successive overnight periods of wakefulness is an effective strategy to maintain cognitive function when optimal sleep periods during the day are not available.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial (CC BY).
Confianza de la comunidad
Cargando…
¿Cuánto confías en los hallazgos de este estudio?
Comentarios
¿Algo está mal aquí?
Señala este estudio si su información, etiquetas o financiación parecen incorrectas. Un editor revisa cada señalamiento.
Información educativa sobre investigación publicada. No es consejo médico ni una recomendación para empezar o dejar nada.