Trial reportPsychopharmacology2021
Effects of caffeine ingestion on dynamic visual acuity: a placebo-controlled, double-blind, balanced-crossover study in low caffeine consumers.
Trial report in Psychopharmacology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
10 citing papers in PubMed, 19 citations in OpenAlex.
- Effects of different doses of caffeine on cognitive performance in healthy physically active individuals.European journal of nutrition · 2024Trial
- Concurrent consumption of cocoa flavanols and caffeine does not acutely modulate working memory and attention.European journal of nutrition · 2024Trial
- Caffeine supplementation improves the cognitive abilities and shooting performance of elite e-sports players: a crossover trial.Scientific reports · 2024Trial
- A multimodal framework to assess differences in dynamic visual acuity between athletes with and without recent sport-related concussion.Experimental brain research · 2026Article
- Coffee's Impact on Health and Well-Being.Nutrients · 2025Review
- The effect of recent concussion history on dynamic visual acuity and balance control in varsity athletes.Experimental brain research · 2025Article
- The Short- and Long-Term Perceptual Learning of Clinical Dynamic Visual Acuity Test.Investigative ophthalmology & visual science · 2024Article
- Low and High Doses of Espresso Coffee Improve Repeated Sprint Performance and Eye-Hand Coordination Following Fatigue Status in Male Basketball Players.Current developments in nutrition · 2024Article
- A treadmill running research protocol to assess dynamic visual acuity and balance for athletes with and without recent concussion history.BMC sports science, medicine & rehabilitation · 2024Article
- Advances in dynamic visual acuity test research.Frontiers in neurology · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAcute caffeine ingestion has been associated with improvements in cognitive performance and visual functioning. The main objective of this study was to determine the effects of caffeine intake on dynamic visual acuity (DVA).
methodsTwenty-one low caffeine consumers (22.5 ± 1.6 years) took part in this placebo-controlled, double-blind, and balanced crossover study. In two different days and following a random order, participants ingested either caffeine (4 mg/kg) or placebo, and DVA was measured after 60 min of ingesting the corresponding capsule. A recently developed and validated software (moV& test, V&mp Vision Suite, Waterloo, Canada) was used to assess DVA.
resultsWe found a greater accuracy for both the horizontal and random motion paths of DVA after caffeine ingestion (p < 0.001 and p = 0.002, respectively). In regard to the speed of the response, our data revealed that caffeine intake was associated with a faster reaction time for horizontally (p = 0.012) but not for randomly (p = 0.846) moving targets. Also, participants reported higher levels of perceived activation after consuming caffeine in comparison to placebo (p < 0.001).
conclusionsOur data suggest that caffeine intake (i.e., a capsule containing 4 mg/kg) has an ergogenic effect on DVA, which may be of special relevance in real-word contexts that require to accurately and rapidly detect moving targets (e.g., sports, driving, or piloting).
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.