Three consecutive nights of sleep loss: Effects of morning caffeine consumption on subjective sleepiness/alertness, reaction time and simulated driving performance

Bartrim, Karly; McCarthy, Brianna; McCartney, Danielle; Grant, Gary; Desbrow, Ben; Irwin, Christopher

doi:10.1016/j.trf.2020.02.017

Cited by 11 publications

(12 citation statements)

References 55 publications

(10 reference statements)

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“…It is known that pure tone audiometry is influenced by endogenous factors such as attention and patient experience [ 49 ]; the difference observed herein was not of clinical value since only two individuals in each group showed variation in the degree of hearing loss grade between phases 1 and 3, and this variation in degree was due to the difference of less than 10dB between the measures which is considered a non-significant variation [ 50 ]. These data differ from out expectations since caffeine has been shown to improve an individual’s alertness, ability to concentrate, attention and memory and improves transmission in the central brain auditory pathways [ 51 , 52 ].…”

Section: Discussionmentioning

confidence: 72%

The effect of caffeine on tinnitus: Randomized triple-blind placebo-controlled clinical trial

et al. 2021

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Objective To test the hypothesis that caffeine can influence tinnitus, we recruited 80 patients with chronic tinnitus and randomly allocated them into two groups (caffeine and placebo) to analyze the self-perception of tinnitus symptoms after caffeine consumption, assuming that this is an adequate sample for generalization. Methods The participants were randomized into two groups: one group was administered a 300-mg capsule of caffeine, and the other group was given a placebo capsule (cornstarch). A diet that restricted caffeine consumption for 24 hours was implemented. The participants answered questionnaires (the Tinnitus Handicap Inventory—THI, the Visual Analog Scale—VAS, the profile of mood state—POMS) and underwent examinations (tonal and high frequency audiometry, acufenometry (frequency measure; intensity measure and the minimum level of tinnitus masking), transient otoacoustic emissions—TEOAE and distortion product otoacoustic emissions—DPOAE assessments) at two timepoints: at baseline and after capsule ingestion. Results There was a significant change in mood (measured by the POMS) after caffeine consumption. The THI and VAS scores were improved at the second timepoint in both groups. The audiometry assessment showed a significant difference in some frequencies between baseline and follow-up measurements in both groups, but these differences were not clinically relevant. Similar findings were observed for the amplitude and signal-to-noise ratio in the TEOAE and DPOAE measurements. Conclusions Caffeine (300 mg) did not significantly alter the psychoacoustic measures, electroacoustic measures or the tinnitus-related degree of discomfort.

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Section: Discussionmentioning

confidence: 72%

The effect of caffeine on tinnitus: Randomized triple-blind placebo-controlled clinical trial

et al. 2021

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“…A wide range of populations were included, though there were some differences based on study type. Experimental or quasi-experimental studies included university students (n = 2), 33,34 young adults (n = 11), [15][16][17][18]20,22,25,[27][28][29]32 and healthy adults of any age (n = 8). 14,19,21,23,24,26,30,31 Naturalistic studies were based on heavy vehicle drivers (n = 2), 35,36 and nurses (n = 1).…”

Section: Study Characteristicsmentioning

confidence: 99%

“…Five studies also included additional experimental conditions, such as real-world versus simulated driving, 28 and placebo-controlled interventions involving alcohol, 22,32 or caffeine. 17 Akerstedt et al (2010) 14 Private vehicle owners (n = 14) Age: 37.9 y (range = 24-57)…”

Section: Experimental and Quasi-experimental Studiesmentioning

confidence: 99%

“…Bartrim et al (2020) 17 Healthy young adults (n = 20) Age: 23. • Day 0: Rested control, ≥8 h TIB (wake time at 05:00)…”

Section: Counterbalanced Crossover Designmentioning

confidence: 99%

“…Twelve experimental studies investigated the effects of moderate sleep loss, ranging from 4 h to 5 h TIB. Of these studies, four assessed performance using computer-based simulated driving tasks 20,24,32,34 and eight used medium-to high-fidelity driving simulators, [14][15][16][17]19,21,22,25 which had wider display screens and more realistic vehicle controls. Overall, the results from these studies also indicate significantly worse performance for short sleep durations compared to normal sleep durations of 7.5 h to 8.5 h. When restricted to between 4 h and 5 h TIB, the SDLP tended to become larger and there were more frequent critical incidents, including crashes.…”

Section: Counterbalanced Crossover Designmentioning

confidence: 99%

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How Tired is Too Tired to Drive? A Systematic Review Assessing the Use of Prior Sleep Duration to Detect Driving Impairment

Sprajcer¹,

Dawson²,

Kosmadopoulos³

et al. 2023

NSS

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Driver fatigue is a contributory factor in approximately 20% of vehicle crashes. While other causal factors (eg, drink-driving) have decreased in recent decades due to increased public education strategies and punitive measures, similar decreases have not been seen in fatiguerelated crashes. Fatigued driving could be managed in a similar way to drink-driving, with an established point (ie, amount of prior sleep) after which drivers are "deemed impaired". This systematic review aimed to provide an evidence-base for the concept of deemed impairment and to identify how much prior sleep may be required to drive safely. Four online databases were searched (PubMed, Web of Science, Scopus, Embase). Eligibility requirements included a) measurement of prior sleep duration and b) driving performance indicators (eg, lane deviation) and/or outcomes (eg, crash likelihood). After screening 1940 unique records, a total of 61 studies were included. Included studies were categorised as having experimental/quasi-experimental (n = 21), naturalistic (n = 3), longitudinal (n = 1), case-control (n = 11), or crosssectional (n = 25) designs. Findings suggest that after either 6 or 7 hours of prior sleep, a modest level of impairment is generally seen compared with after ≥ 8 hours of prior sleep (ie, well rested), depending on the test used. Crash likelihood appears to be ~30% greater after 6 or 7 hours of prior sleep, as compared to individuals who are well rested. After one night of either 4 or 5 hours of sleep, there are large decrements to driving performance and approximately double the likelihood of a crash when compared with well-rested individuals. When considering the scientific evidence, it appears that there is a notable decrease in driving performance (and associated increase in crash likelihood) when less than 5h prior sleep is obtained. This is a critical first step in establishing community standards regarding the amount of sleep required to drive safely.

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Coffee effectively attenuates impaired attention in ADORA2A C/C-allele carriers during chronic sleep restriction

Baur

Lange

Elmenhorst

et al. 2021

Progress in Neuro-Psychopharmacology and Biological Psychiatry

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Three consecutive nights of sleep loss: Effects of morning caffeine consumption on subjective sleepiness/alertness, reaction time and simulated driving performance

Cited by 11 publications

References 55 publications

The effect of caffeine on tinnitus: Randomized triple-blind placebo-controlled clinical trial

The effect of caffeine on tinnitus: Randomized triple-blind placebo-controlled clinical trial

How Tired is Too Tired to Drive? A Systematic Review Assessing the Use of Prior Sleep Duration to Detect Driving Impairment

Coffee effectively attenuates impaired attention in ADORA2A C/C-allele carriers during chronic sleep restriction

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