• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Conference outputs
    • View Item
    • Home
    • Griffith Research Online
    • Conference outputs
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • Effects Of Acute Caffeine Ingestion Following A Period Of Sleep Loss On Cognitive And Physical Performance: A Systematic Review And Meta-analysis

    Author(s)
    Irwin, Christopher
    Khalesi, Saman
    Desbrow, Ben
    McCartney, Danielle
    Griffith University Author(s)
    Desbrow, Ben
    Irwin, Chris G.
    Year published
    2020
    Metadata
    Show full item record
    Abstract
    PURPOSE: This systematic review and meta-analysis examined the impact of acute caffeine consumption on cognitive and physical performance in sleep deprived/restricted individuals. METHODS: Electronic databases were searched for studies measuring cognitive and/or physical performance following sleep restriction (≤6h sleep within 24h) or deprivation (≥24h wakefulness) under control (placebo) and intervention (caffeine) conditions. Studies were included if performance was assessed within 6h of caffeine consumption. Individual effect estimates (EEs) were calculated as Hedges’ g for independent groups. Random effects meta-analyses ...
    View more >
    PURPOSE: This systematic review and meta-analysis examined the impact of acute caffeine consumption on cognitive and physical performance in sleep deprived/restricted individuals. METHODS: Electronic databases were searched for studies measuring cognitive and/or physical performance following sleep restriction (≤6h sleep within 24h) or deprivation (≥24h wakefulness) under control (placebo) and intervention (caffeine) conditions. Studies were included if performance was assessed within 6h of caffeine consumption. Individual effect estimates (EEs) were calculated as Hedges’ g for independent groups. Random effects meta-analyses were performed to determine intervention efficacy. Statistical significance was attained if the 95% CI did not include zero. Multiple meta-regression analysis was conducted to determine effects of caffeine dose and period of wakefulness on the magnitude of the effect. RESULTS: 36 publications providing 250 EEs were included. Caffeine improved performance on reaction time tasks (12 EEs; g=1.11; 95% CI: 0.75-1.47) and both response time (44 EEs; g=0.86; 95% CI: 0.53-0.83) and accuracy (27 EEs; g=0.68; 95% CI: 0.48-0.88) on attention tasks. The magnitude of the effect increased as caffeine dose increased, but was not influenced by the period of wakefulness for either task. Caffeine improved executive function (38 EEs; g=0.35; 95% CI: 0.15-0.55) and the magnitude of the effect increased as caffeine dose increased (p=0.007) and period of wakefulness decreased (p=0.021). Caffeine also improved response time (20 EEs; g=1.95; 95% CI: 1.39-2.52) and accuracy (34 EEs; g=0.43; 95% CI: 0.30-0.55) on information processing tasks, but neither caffeine dose (p=0.785) nor period of wakefulness (p=0.373) influenced the magnitude of the effect. No other performance outcomes were appropriate for meta-analysis. However, studies typically indicated a benefit of caffeine on memory (25 EEs), crystallized intelligence (11 EEs) and physical (39 EEs) performance. CONCLUSION: Caffeine is an effective counter-measure to the cognitive and physical impairments associated with sleep loss.
    View less >
    Conference Title
    Medicine & Science in Sports & Exercise
    Volume
    52
    Issue
    7S
    DOI
    https://doi.org/10.1249/01.mss.0000680896.37571.92
    Subject
    Sports science and exercise
    Medical physiology
    Science & Technology
    Life Sciences & Biomedicine
    Publication URI
    http://hdl.handle.net/10072/401670
    Collection
    • Conference outputs

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E
    • TEQSA: PRV12076

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander