Evidence map›Paper›PMID 31900166›Full record

Trial reportJournal of the International Society of Sports Nutrition2020

Effects of caffeine supplementation on physical performance and mood dimensions in elite and trained-recreational athletes.

P Jodra, A Lago-Rodríguez, A J Sánchez-Oliver, A López-Samanes, A Pérez-López, P Veiga-Herreros, A F San Juan, R Domínguez

Open access · goldAbstract readComparative StudyRandomized Controlled Trial
PubMed Full text at PMC Publisher
In one paragraph

Trial report in Journal of the International Society of Sports Nutrition, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 8 pooled it
5.6field-weighted citation impact, top 3% 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

42 citing papers in PubMed, 8 syntheses or guidelines pooled it, 65 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Sport supplementation in competitive swimmers: a systematic review with meta-analysis.Journal of the International Society of Sports Nutrition · 2025
    Pooled it
  4. Pooled it
  5. Pooled it
  6. Pooled it
  7. Pooled it
  8. Pooled it
  9. Trial
  10. Trial
  11. Trial
  12. Trial
  13. Trial
  14. Trial
  15. Trial
  16. Trial
  17. Trial
  18. Trial
  19. Trial
  20. 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

8 authors at 6 institutions in 1 country.

P JodraFaculty of Health Sciences, Universidad Alfonso X El Sabio, Madrid, Spain.
A Lago-RodríguezFaculty of Health Sciences, Universidad Isabel I, Burgos, Spain. angel.lago@ui1.es.
A J Sánchez-OliverDepartment of Human Motricity and Sports Performance, Faculty of Education Sciences, Seville University, Seville, Spain.
A López-SamanesSchool of Physiotherapy, Faculty of Health Sciences, Universidad Francisco de Vitoria, Madrid, Spain.
A Pérez-LópezDepartment of Biomedical Sciences, Faculty of Medicine and Health Sciences, University of Alcalá, Madrid, Spain.
P Veiga-HerrerosFaculty of Health Sciences, Universidad Alfonso X El Sabio, Madrid, Spain.
A F San JuanSports Biomechanics Laboratory, Department of Health and Human Performance, Faculty of Physical Activity and Sport Sciences - INEF, Universidad Politécnica de Madrid, Madrid, Spain.ORCID http://orcid.org/0000-0002-7083-7610
R DomínguezFaculty of Health Sciences, Universidad Isabel I, Burgos, Spain.
Universidad de Alcalá · ESUniversidad Isabel I · ESIE University · ESUniversidad Alfonso X el Sabio · ESUniversidad Francisco de Vitoria · ESUniversidad Politécnica de Madrid · ES

Funding

Banco Santander Universidad Alfonso X el Sabio
6 · The paper itself

Abstract

backgroundCaffeine supplementation (CAFF) has an established ergogenic effect on physical performance and the psychological response to exercise. However, few studies have compared the response to CAFF intake among athletes of different competition level. This study compares the acute effects of CAFF on anaerobic performance, mood and perceived effort in elite and moderately-trained recreational athletes.

methodsParticipants for this randomized, controlled, crossover study were 8 elite athletes (in the senior boxing national team) and 10 trained-recreational athletes. Under two experimental conditions, CAFF supplementation (6 mg/kg) or placebo (PLAC), the athletes completed a Wingate test. Subjective exertion during the test was recorded as the rating of perceived exertion (RPE) both at the general level (RPE

resultsIn response to CAFF intake, improvements were noted in W

conclusionsCAFF supplementation improved anaerobic performance in both the elite and recreational athletes. However, the ergogenic effect of CAFF on several mood dimensions and subjective vitality was greater in the elite athletes.

Indexed as

AffectAthletic PerformancePhysical ExertionAdministration, OralCaffeineCentral Nervous System StimulantsCross-Over StudiesHumansMalePerformance-Enhancing SubstancesYoung AdultCaffeineCentral Nervous System StimulantsPerformance-Enhancing SubstancesAthletesBoxingCaffeineErgogenic aidSport supplementation

Identifiers

PMID31900166
PMCPMC6942320
OpenAlexW2998878147

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.