Evidence map›Paper›PMID 36146946›Full record

Trial reportThe British journal of nutrition2023

Cognitive effects of guarana supplementation with maximal intensity cycling.

Tom Gurney, Naomi Bradley, Dionisio Izquierdo, Flaminia Ronca

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

Trial report in The British journal of nutrition, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 2 pooled it
–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

3 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Trial
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

4 authors.

Tom GurneyUniversity College London, Division of Surgery & Interventional Science, LondonW1T 7HA, UK.ORCID https://orcid.org/0000-0002-2490-2960
Naomi BradleyUniversity College London, Division of Surgery & Interventional Science, LondonW1T 7HA, UK.
Dionisio IzquierdoUniversity College London, Division of Surgery & Interventional Science, LondonW1T 7HA, UK.
Flaminia RoncaUniversity College London, Division of Surgery & Interventional Science, LondonW1T 7HA, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study was to investigate the effects of guarana supplementation on cognitive performance before and after a bout of maximal intensity cycling and to compare this to an equivalent caffeine dose. Twenty-five participants completed the randomised double-blind crossover trial by performing cognitive tests with one of three supplements, on three different days: guarana (125 mg/kg), caffeine (5 mg/kg) or placebo (65 mg/kg protein powder). After 30 min of rest, participants performed simple (SRT) and choice reaction time (CRT) tests, an immediate word recall test and Bond-Lader mood scale. This was followed by a cycling

Indexed as

PaulliniaCaffeineCognitionCross-Over StudiesDietary SupplementsHumansPlant ExtractsCaffeinePlant ExtractsAlertnessCognitive performanceNutritionPaullinia cupanaReaction time

Identifiers

PMID36146946
PMCPMC10277666

What OpenQuestion holds

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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.