Evidence map›Paper›PMID 34684665›Full record

SynthesisNutrients2021

Does Acute Caffeine Supplementation Improve Physical Performance in Female Team-Sport Athletes? Evidence from a Systematic Review and Meta-Analysis.

Alejandro Gomez-Bruton, Jorge Marin-Puyalto, Borja Muñiz-Pardos, Angel Matute-Llorente, Juan Del Coso, Alba Gomez-Cabello, German Vicente-Rodriguez, Jose A Casajus, Gabriel Lozano-Berges

Open access · goldAbstract readMeta-AnalysisSystematic Review
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 13 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 13 pooled it
5.0field-weighted citation impact, top 4% of its field
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

38 citing papers in PubMed, 13 syntheses or guidelines pooled it, 44 citations in OpenAlex.

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  14. Effects of Caffeine andNutrients · 2026
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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

9 authors at 2 institutions in 1 country.

Alejandro Gomez-BrutonGENUD (Growth, Exercise, Nutrition and Development) Research Group, FIMS Collaborating Center of Sports Medicine, 50012 Zaragoza, Spain.ORCID 0000-0002-0520-1640
Jorge Marin-PuyaltoGENUD (Growth, Exercise, Nutrition and Development) Research Group, FIMS Collaborating Center of Sports Medicine, 50012 Zaragoza, Spain.
Borja Muñiz-PardosGENUD (Growth, Exercise, Nutrition and Development) Research Group, FIMS Collaborating Center of Sports Medicine, 50012 Zaragoza, Spain.
Angel Matute-LlorenteGENUD (Growth, Exercise, Nutrition and Development) Research Group, FIMS Collaborating Center of Sports Medicine, 50012 Zaragoza, Spain.ORCID 0000-0001-8500-1667
Juan Del CosoCentre for Sports Studies, Rey Juan Carlos University, 28943 Fuenlabrada, Spain.ORCID 0000-0002-5785-984X
Alba Gomez-CabelloGENUD (Growth, Exercise, Nutrition and Development) Research Group, FIMS Collaborating Center of Sports Medicine, 50012 Zaragoza, Spain.ORCID 0000-0001-6492-2512
German Vicente-RodriguezGENUD (Growth, Exercise, Nutrition and Development) Research Group, FIMS Collaborating Center of Sports Medicine, 50012 Zaragoza, Spain.ORCID 0000-0002-4303-4097
Jose A CasajusGENUD (Growth, Exercise, Nutrition and Development) Research Group, FIMS Collaborating Center of Sports Medicine, 50012 Zaragoza, Spain.ORCID 0000-0002-7215-6931
Gabriel Lozano-BergesGENUD (Growth, Exercise, Nutrition and Development) Research Group, FIMS Collaborating Center of Sports Medicine, 50012 Zaragoza, Spain.ORCID 0000-0002-0137-9900
Universidad de Zaragoza · ESUniversidad Rey Juan Carlos · ES

Funding

University of Zaragoza UZCUD2020-BIO-02
6 · The paper itself

Abstract

introductionRecent original research and meta-analyses suggest that acute caffeine supplementation improves exercise performance in team-sport athletes (TSA). Nonetheless, most of the studies testing the effects of caffeine on TSA included samples of male athletes, and there is no meta-analysis of the performance-enhancing effects of caffeine on female TSA. The aim of the present study was to synthesize the existing literature regarding the effect of caffeine supplementation on physical performance in adult female TSA.

methodsA search was performed in Pubmed/Medline, SPORTDiscus and Scopus. The search was performed from the inception of indexing until 1 September 2021. Crossover randomized controlled trials (RCT) assessing the effects of oral caffeine intake on several aspects of performance in female TSA were selected. The methodological quality and risk of bias were assessed for individual studies using the Physiotherapy Evidence Database scale (PEDro) and the RoB 2 tool. A random-effects meta-analysis of standardized mean differences (SMD) was performed for several performance variables.

resultsThe search retrieved 18 articles that fulfilled the inclusion/exclusion criteria. Overall, most of the studies were of excellent quality with a low risk of bias. The meta-analysis results showed that caffeine increased performance in specific team-sport skills (SMD: 0.384, 95% confidence interval (CI): 0.077-0.691), countermovement jump (SMD: 0.208, CI: 0.079-0.337), total body impacts (SMD: 0.488; 95% CI: 0.050, 0.927) and handgrip strength (SMD: 0.395, CI: 0.126-0.665). No effects were found on the ratings of perceived exertion, squat jumps, agility, repeated sprint ability or agility tests performed after fatigue.

conclusionsThe results of the meta-analysis revealed that acute caffeine intake was effective in increasing some aspects of team-sports performance in women athletes. Hence, caffeine could be considered as a supplementation strategy for female athletes competing in team sports.

Indexed as

AthletesAthletic PerformanceDietary SupplementsPhysical Functional PerformanceCaffeineFemaleHumansCaffeinebasketballelite athletesergogenic aidsoccersports performancevolleyball

Identifiers

PMID34684665
PMCPMC8538965
OpenAlexW3205195899

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.