Evidence map›Paper›PMID 37920289›Full record

ArticleFrontiers in nutrition2023

Acute effect of different doses of caffeinated chewing gum on exercise performance in caffeine-habituated male soccer players.

Ulas Can Yildirim, Neslihan Akcay, Dan Iulian Alexe, Ozcan Esen, Mehmet Gulu, Cristina Cîrtiţă-Buzoianu, Fahri Safa Cinarli, Marilena Cojocaru, Cengizhan Sari, Cristina Ioana Alexe and 1 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in nutrition, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 4 pooled it
1.7field-weighted citation impact, top 17% 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

19 citing papers in PubMed, 4 syntheses or guidelines pooled it, 8 citations in OpenAlex.

  1. Creatine supplementation in soccer players: a systematic review.Journal of the International Society of Sports Nutrition · 2026
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  12. Theacrine as a novel ergogenic aid: impact on canoe sprint performance.Journal of the International Society of Sports Nutrition · 2025
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  19. From Science to Dressing Room: Dietary Supplements for Elite Soccer Performance.Journal of functional morphology and kinesiology · 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

11 authors at 9 institutions in 3 countries.

Ulas Can YildirimFaculty of Sport Sciences, Sinop University, Sinop, Türkiye.
Neslihan AkcayHasan Doğan School of Physical Education and Sports, Karabük University, Karabük, Türkiye.
Dan Iulian AlexeDepartment of Physical and Occupational Therapy, Faculty of Movement, Sports and Health, Sciences, Vasile Alecsandri University of Bacau, Bacău, Romania.
Ozcan EsenDepartment of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle upon Tyne, United Kingdom.
Mehmet GuluFaculty of Sport Sciences, Kırıkkale University, Kırıkkale, Türkiye.
Cristina Cîrtiţă-BuzoianuFaculty of Letters, Communication and Public Relations Department, Vasile Alecsandri University of Bacau, Bacău, Romania.
Fahri Safa CinarliFaculty of Sport Sciences, İnönü University, Malatya, Türkiye.
Marilena CojocaruFaculty of Physical Education and Sport, Spiru Haret University of Bucuresti, Bucharest, Romania.
Cengizhan SariFaculty of Sport Sciences, Mus Alparslan University, Mus, Türkiye.
Cristina Ioana AlexeDepartment of Physical Education and Sports Performance, Faculty of Movement, Sports and Health, Sciences, Vasile Alecsandri University of Bacau, Bacau, Romania.
Raci KarayigitFaculty of Sport Sciences, Ankara University, Ankara, Türkiye.
University of Bacău · ROAnkara University · TRInonu University · TRKarabük University · TRKırıkkale University · TRMuş Alparslan University · TRNorthumbria University · GBSinop University · TRSpiru Haret University · RO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The ergogenic benefits of caffeine have been well established, but there is scarce research on its chewing gum form. The present research aimed to examine the effects of different doses (100 and 200 mg) of caffeinated chewing gum on muscle strength, vertical jump performance, and ball-kicking speed in trained male soccer players. In a double-blind, randomized counterbalanced, and crossover research design, 14 male soccer players (age = 22 ± 2 y; body mass = 74.2 ± 7.1 kg; height = 180.0 ± 6.8 cm; habitual caffeine intake = 358.9 ± 292.4 mg/day) participated in three experimental trials. In each trial, participants performed isometric handgrip strength, quadriceps and hamstring strength, ball-kicking speed, and 15 s countermovement jump test 10 min after chewing 100 mg (LCAF) or 200 mg (MCAF) of caffeinated gum or placebo (PLA). MCAF improved quadriceps strength (53.77 ± 5.77 kg) compared to LCAF (49.62 ± 8.81 kg,

Indexed as

ball kicking speedergogenic aidgumstrengthteam sportsvertical jump

Identifiers

PMID37920289
PMCPMC10619147
OpenAlexW4387740306

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.