Acute caffeine supplementation as a nutrition-based strategy to mitigate sleep-loss-related cognitive and operational performance impairments in military personnel: a systematic review and meta-analysis
Wang R, Wang W, Meng L, Hao G, Gu G
Frontiers in nutrition · 0 citas
Cómo se estudió
- Diseño
- Revisión sistemática (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación independiente
Según la declaración de financiación del texto completo.
Publicación
- Publicado
- 2026-09-04 · Front Nutr · vol. 13 · pág. 1893033
- Editorial
- Frontiers Media
- Citado
- 0 citas · más que el 59% de estudios similares · 0.0× el promedio de su campo
- Referencias
- 26 trabajos
- Acceso
- Acceso abierto (revista) · CC-BY
- Áreas de investigación
- Sleep and Work-Related Fatigue · Coffee research and impacts · Sleep and Wakefulness Research
- Palabras clave
- caffeine, sleep deprivation, sleep restriction, military personnel, sustained attention, response performance, cognitive performance, fatigue management, ergogenic aids, sustained wakefulness, caffeine supplementation, operational performance, caffeine side effects, caffeine withdrawal, caffeine tolerance, caffeine dependence, caffeine withdrawal symptoms
5 autores
- Renchen Wang🇨🇳Harbin Institute of Information Technology
- Weifeng Wang🇨🇳Harbin Institute of Information Technology
- Lingwei Meng🇨🇳Harbin Institute of Information Technology
- Gang Hao🇨🇳Harbin Institute of Information Technology
- Guoxin Gu🇨🇳 · autor de correspondenciaHarbin Institute of Information Technology
Resumen
El texto original del estudio, en el idioma en que se publicó.
Background
Sleep loss is common in military operations and degrades vigilance, higher cognitive function, and operational performance. Whether acute caffeine meaningfully attenuates these decrements in military settings has not been quantitatively synthesized.
Methods
This study systematically searched PubMed, Web of Science, Cochrane Library, MEDLINE, Embase, and SPORTDiscus from database inception to the search cutoff date. Eligible studies were randomized controlled or crossover trials that included military personnel or military-related populations, administered caffeine under conditions of sleep deprivation, sleep restriction, or sustained wakefulness, and compared caffeine with placebo or a non-caffeinated control. The primary outcomes were categorized as vigilance and response performance, complex cognitive performance, and military task performance. Risk of bias was assessed using the RoB 2 tool, and meta-analyses were conducted using StataMP 17.0.
Results
Seven randomized, double-blind, placebo-controlled studies were included. The meta-analysis showed that, compared with placebo, caffeine significantly improved vigilance and response performance under conditions of sleep deprivation or sleep restriction (SMD = 0.73, 95% CI: 0.50-0.96, I2 = 0.0%), complex cognitive performance (SMD = 0.54, 95% CI: 0.16-0.93, I2 = 0.0%), and military task performance (SMD = 0.45, 95% CI: 0.19-0.71, I2 = 29.2%). Overall, the ergogenic effects of caffeine were most consistent for vigilance and response performance, showed stable beneficial effects on complex cognitive performance, and were primarily reflected in improved task-execution speed and operational efficiency for military task performance.
Conclusion
The available evidence suggests that acute caffeine supplementation improves vigilance and response performance during sleep loss in military personnel, with additional benefits for complex cognitive and military task performance. Effects were most consistent for vigilance and response speed, whereas benefits for complex cognition and military task performance were more task-dependent. These findings support caffeine as a practical short-term adjunct to fatigue management during military operations involving sleep loss, although further studies are needed to refine dose, timing, and task-specific use.
Systematic review registration
https://www.crd.york.ac.uk/PROSPERO/view/CRD420261375742, identifier CRD420261375742.
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