Evidence map›Paper›PMID 40727690›Full record

ArticleFrontiers in nutrition2025

Effects of isolated or combined carbohydrate and caffeine supplementation on tennis training performance: single-blind randomized placebo-controlled crossover session.

Mekki Abdioglu, Ahmet Mor, Dan Iulian Alexe, Raul Marian Todor, Elena Adelina Panaet, Cristina Ioana Alexe, Firat Akca

Abstract read
In one paragraph

Article in Frontiers in nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 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

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Theacrine as a novel ergogenic aid: impact on canoe sprint performance.Journal of the International Society of Sports Nutrition · 2025
    Trial
  6. Article
  7. Effects of Caffeine on NFL Combine-Like Tests in Undergraduate Students.International journal of exercise science · 2026
    Article
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

7 authors.

Mekki AbdiogluGraduate School of Health Sciences, Ankara University, Ankara, Türkiye.
Ahmet MorDepartment of Coaching Education, Faculty of Sport Sciences, Sinop University, Sinop, Türkiye.
Dan Iulian AlexeDepartment of Physical and Occupational Therapy, "Vasile Alecsandri" University of Bacau, Bacău, Romania.
Raul Marian TodorDepartment of Environmental Science, Physics, Physical Education and Sport, "Lucian Blaga" University of Sibiu, Sibiu, Romania.
Elena Adelina PanaetDepartment of Physical and Occupational Therapy, "Vasile Alecsandri" University of Bacau, Bacău, Romania.
Cristina Ioana AlexeDepartment of Physical Education and Sports Performance, "Vasile Alecsandri" University of Bacău, Bacău, Romania.
Firat AkcaDepartment of Coaching Education, Faculty of Sport Sciences, Ankara University, Ankara, Türkiye.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: In long tennis matches, the number of unforced errors in groundstrokes increases. However, players need to maintain their successful strokes consistently in order to be successful in matches. To overcome this situation, tennis players utilize certain ergogenic supplements. In order to determine the most effective ergogenic supplement on players' performance, it is aimed to investigate the effects of caffeinated chewing gum (CAF Method: The study included 14 male tennis players (mean age: 15.93 ± 0.83 years, height: 173.86 ± 6.89 cm, and body mass: 60.64 ± 2.58 kg) with experience in national and international tournaments. Players ingested CHO Results: The CHO Conclusions: In conclusion, there was a significant difference on basic strokes and RPE scores between CHO

Indexed as

ergogenic aidsgroundstrokesperformancetennistraining

Identifiers

PMID40727690
PMCPMC12301218

What OpenQuestion holds

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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.