The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.
Effects of caffeine and caffeine withdrawal on mood and cognitive performance degraded by sleep restriction
Abstract
Rationale It has been suggested that caffeine is most likely to benefit mood and performance when alertness is low.Objectives To measure the effects of caffeine on psychomotor and cognitive performance, mood, blood pressure and heart rate in sleep-restricted participants. To do this in a group of participants who had also been previously deprived of caffeine for 3 weeks, thereby potentially removing the confounding effects of acute caffeine withdrawal.Methods Participants were moderate to moderate-high caffeine consumers who were provided with either decaffeinated tea and/or coffee for 3 weeks (LTW) or regular tea and/or coffee for 3 weeks (overnight caffeine-withdrawn participants, ONW). Then, following overnight caffeine abstinence, they were tested on a battery of tasks assessing mood, cognitive performance, etc. before and after receiving caffeine (1.2 mg/kg) or on another day after receiving placebo.Results Final analyses were based on 17 long-term caffeine-withdrawn participants (LTW) and 17 ONW participants whose salivary caffeine levels on each test day confirmed probable compliance with the instructions concerning restrictions on consumption of caffeine-containing drinks. Acute caffeine withdrawal (ONW) had a number of negative effects, including impairment of cognitive performance, increased headache, and reduced alertness and clear-headedness. Caffeine (versus placebo) did not significantly improve cognitive performance in LTW participants, although it prevented further deterioration of performance in ONW participants. Caffeine increased tapping speed (but tended to impair hand steadiness), increased blood pressure, and had some effects on mood in both groups.Conclusions The findings provide strong support for the withdrawal reversal hypothesis. In particular, cognitive performance was found to be affected adversely by acute caffeine withdrawal and, even in the context of alertness lowered by sleep restriction, cognitive performance was not improved by caffeine in the absence of these withdrawal effects. Different patterns of effects (or lack of effects) of caffeine and caffeine withdrawal were found for other variables, but overall these results also suggest that there is little benefit to be gained from caffeine consumption.
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“In fact, studies that have employed long-term caffeine withdrawal methodology have consistently failed to find cognitive enhancing effects of acute caffeine (78–82).”
From The Safety of Ingested Caffeine: A Comprehensive Review (2017) · cites this paper as [81]
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“One way to investigate this question is to compare the effects of caffeine in caffeine consumers and non-consumers; although these groups are self-selected and therefore pre-existing differences might account for variation found in responses to caffeine administration (Goldstein et al. 1969; Rogers et al. 2003).”
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Caffeinated energy drinks a growing problem
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The Safety of Ingested Caffeine: A Comprehensive Review
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Metadata
- Authors
- Rogers, P. J., Heatherley, S. V., Hayward, R. C., Seers, H. E., Hill, J., & Kane, M.
- Affiliations
- University of Bristol (GB)
- Ollscoil na Gaillimhe – University of Galway (IE)
- Corresponding author
- Rogers, Peter J.
- Venue
- Psychopharmacology
- Published
- 2005-01-26
- Volume
- 179
- Issue
- 4
- Pages
- 742-752
- ISSN
- 0033-3158 (ISSN-L)
- 1432-2072
- OpenAlex
- W1986355011
- Cited by
- 132
- References
- 30
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 4 · 2023: 7 · 2022: 4 · 2021: 2 · 2020: 7 · 2019: 7 · 2018: 1 · 2017: 5 · 2016: 6 · 2015: 5 · 2014: 7 · 2013: 5 · 2012: 16
- FWCI
- 5.53
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Psychopharmacology (publishedVersion)
- PubMed (publishedVersion)
- Bristol Research (University of Bristol) (publishedVersion)
- Explore Bristol Research (submittedVersion)
- Funders
- European Commission
- Topics
- Health Sciences › Medicine › Pharmacology (medical) › Coffee research and impacts
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Keywords
- caffeine, caffeine withdrawal, sleep restriction, cognitive performance, mood, alertness, psychomotor performance, blood pressure, heart rate, headache
- MeSH terms
- Adult, Affect, Central Nervous System Stimulants, Attention, Blood Pressure, Caffeine, Chromatography, High Pressure Liquid, Cognition, Female, Heart Rate, Humans, Immunoenzyme Techniques, Impulsive Behavior, Male, Memory, Memory, Short-Term, Psychomotor Performance, Reaction Time, Sleep Deprivation, Substance Withdrawal Syndrome, Tremor
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