Evidence map›Paper›PMID 36615750›Full record

Trial reportNutrients2022

The Effect of Caffeinated Chewing Gum on Volleyball-Specific Skills and Physical Performance in Volleyball Players.

Magdalena Kaszuba, Olga Klocek, Michał Spieszny, Aleksandra Filip-Stachnik

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

Trial report in Nutrients, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 6 pooled it
2.3field-weighted citation impact, top 11% 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

17 citing papers in PubMed, 6 syntheses or guidelines pooled it, 20 citations in OpenAlex.

  1. Pooled it
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  14. Validation of the WIMU PROJournal of human kinetics · 2025
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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

4 authors at 2 institutions in 1 country.

Magdalena KaszubaInstitute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education in Katowice, 40-065 Katowice, Poland.
Olga KlocekInstitute of Sport Sciences, University of Physical Education in Krakow, 31-571 Krakow, Poland.
Michał SpiesznyInstitute of Sport Sciences, University of Physical Education in Krakow, 31-571 Krakow, Poland.ORCID 0000-0002-9934-6911
Aleksandra Filip-StachnikInstitute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education in Katowice, 40-065 Katowice, Poland.ORCID 0000-0003-2008-6158
Akademii Wychowania Fizycznego im. Jerzego Kukuczki w Katowicach · PLUniversity School of Physical Education in Kraków · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

No previous study analyzed the effect of caffeinated chewing gum on volleyball-specific skills and physical performance in volleyball players. Twelve volleyball players participated ina randomized, crossover, and double-blind experiment after ingestion of (a) ~3.2 ± 0.4 mg/kg of body mass (BM) of caffeine via chewing gum or (b) non-caffeinated chewing gum (placebo) and performed: (a) a countermovement jump, (b) a squat jump, (c), an attack jump, (d) a block jump, (e) 5 and 10 m sprints, (f) a modified agility

Indexed as

Athletic PerformanceCaffeineVolleyballChewing GumHumansPhysical Functional PerformanceCaffeineChewing Gumergogenic aidsports nutritionsupplementteam sports

Identifiers

PMID36615750
PMCPMC9823551
OpenAlexW4312204064

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.