Evidence map›Paper›PMID 30348178›Full record

Trial reportJournal of the International Society of Sports Nutrition2018

The acute effects of plyometric and sled towing stimuli with and without caffeine ingestion on vertical jump performance in professional soccer players.

Mauro A Guerra, Leonardo C Caldas, Helder L De Souza, Kaio F Vitzel, Jason M Cholewa, Michael J Duncan, Lucas Guimarães-Ferreira

Abstract readRandomized Controlled Trial
PubMed Full text at PMC Publisher
In one paragraph

Trial report in Journal of the International Society of Sports Nutrition, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 7 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

22 citing papers in PubMed, 7 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Pooled it
  7. Pooled it
  8. Trial
  9. Trial
  10. Trial
  11. Caffeine's influence on vertical jump height: a real-life collegiate student-athlete approach.Journal of the International Society of Sports Nutrition · 2025
    Trial
  12. Trial
  13. Trial
  14. Trial
  15. Trial
  16. Article
  17. From Science to Dressing Room: Dietary Supplements for Elite Soccer Performance.Journal of functional morphology and kinesiology · 2025
    Review
  18. Article
  19. Article
  20. 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.

Mauro A GuerraMuscle Physiology and Human Performance Research Group, Center of Physical Education and Sports, Federal University of Espirito Santo, Av. Fernando Ferrari, 514, Campus Universitário, Goiabeiras, Vitória, ES, 29075-810, Brazil.
Leonardo C CaldasMuscle Physiology and Human Performance Research Group, Center of Physical Education and Sports, Federal University of Espirito Santo, Av. Fernando Ferrari, 514, Campus Universitário, Goiabeiras, Vitória, ES, 29075-810, Brazil.
Helder L De SouzaMuscle Physiology and Human Performance Research Group, Center of Physical Education and Sports, Federal University of Espirito Santo, Av. Fernando Ferrari, 514, Campus Universitário, Goiabeiras, Vitória, ES, 29075-810, Brazil.
Kaio F VitzelMassey Institute of Food Science and Technology, College of Health, Massey University, Palmerston North, New Zealand.
Jason M CholewaDepartment of Kinesiology, Coastal Carolina University, Conway, SC, USA.
Michael J DuncanFaculty of Health and Life Sciences, Coventry University, Coventry, UK.
Lucas Guimarães-FerreiraMuscle Physiology and Human Performance Research Group, Center of Physical Education and Sports, Federal University of Espirito Santo, Av. Fernando Ferrari, 514, Campus Universitário, Goiabeiras, Vitória, ES, 29075-810, Brazil. lucas.ferreira@ufes.br.ORCID http://orcid.org/0000-0002-2970-7355

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPost-activation potentiation (PAP) is the phenomenon by which muscular performance is enhanced in response to a conditioning stimulus. PAP has typically been evidenced via improved counter movement jump (CMJ) performance. This study examined the effects of PAP, with and without prior caffeine ingestion, on CMJ performance.

methodsTwelve male professional soccer players (23 ± 5 years) performed two trials of plyometric exercises and sled towing 60 min after placebo or caffeine ingestion (5 mg.kg

resultsTwo way ANOVA main effects indicated a significant difference in jump height after the PAP protocol (F[3, 11] = 14.99, P < 0.001, partial η2 = 0.577). Analysis also indicated a significant difference in CMJ performance across conditions, with caffeine eliciting a greater response (F[1, 11] = 10.12, P = 0.009, partial η2 = 0.479). CMJ height was increased at T1, T3 and T5 in caffeine condition (5.07%, 5.75% and 5.40%, respectively; P < 0.01) compared to baseline. In the placebo condition, jump performance was increased at T3 (4.94%; P < 0.01) only. Jump height was higher in caffeine condition on T1, T3 and T5 (P < 0.05) but not on baseline (P > 0.05) compared to placebo.

conclusionsThe results of this study suggest that acute plyometric and sled towing stimuli enhances jump performance and that this potentiation is augmented by caffeine ingestion in male soccer players.

Indexed as

Athletic PerformancePlyometric ExerciseAdultAthletesCaffeineDouble-Blind MethodHumansMaleSoccerYoung AdultCaffeineCaffeinePost-activation potentiationSports performanceVertical jump

Identifiers

PMID30348178
PMCPMC6198523

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.