Evidence map›Paper›PMID 42559121›Full record

Trial reportJournal of nutritional science2026

Consumption of caffeine-containing beverages improves sustained attention and alertness but has no effect on strength or static muscular endurance.

Lia Jiannine, Catherine Holen, Tobin A Silver, Cassandra Evans, Jose Antonio

Abstract readRandomized Controlled Trial
PubMed Full text at PMC Publisher
In one paragraph

Trial report in Journal of nutritional science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Lia JiannineNova Southeastern University, USA.
Catherine HolenNova Southeastern University, USA.
Tobin A SilverDept. of Health and Human Performance, Nova Southeastern University, USA.
Cassandra EvansNova Southeastern University, USA.ORCID https://orcid.org/0000-0001-6176-7617
Jose AntonioNova Southeastern University, USA.ORCID https://orcid.org/0000-0002-8930-1058

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Energy drinks are widely consumed for their caffeine content and related ergogenic effects. Many energy drinks also contain additional ingredients purported to enhance both physical and cognitive performance; however, it remains unclear whether these benefits are attributable solely to caffeine or the synergistic effect of other ingredients. The purpose of this study was to assess the effects of an energy drink vs. a caffeine-matched control on measures of sustained attention. Using a randomised, double-masked design (

Indexed as

AttentionCaffeineEnergy DrinksMuscle StrengthPhysical EnduranceAdultDouble-Blind MethodFemaleHand StrengthHumansMaleMemoryPsychomotor PerformanceReaction TimeYoung AdultCaffeineAttentionEnergy drinksReaction timeSupplementVigilance

Identifiers

PMID42559121
PMCPMC13439017

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.