Evidence map›Paper›PMID 35276932›Full record

Trial reportNutrients2022

Acute Effects of Low Dose of Caffeine Ingestion Combined with Conditioning Activity on Psychological and Physical Performances of Male and Female Taekwondo Athletes.

Ibrahim Ouergui, Nourhene Mahdi, Slaheddine Delleli, Hamdi Messaoudi, Hamdi Chtourou, Zouheir Sahnoun, Anissa Bouassida, Ezdine Bouhlel, Hadi Nobari, Luca Paolo Ardigò and 1 more

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 23 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 7 pooled it
4.9field-weighted citation impact, top 4% 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

23 citing papers in PubMed, 7 syntheses or guidelines pooled it, 30 citations in OpenAlex.

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  9. Caffeine's influence on vertical jump height: a real-life collegiate student-athlete approach.Journal of the International Society of Sports Nutrition · 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 6 institutions in 5 countries.

Ibrahim OuerguiHigh Institute of Sport and Physical Education of Kef, University of Jendouba, Kef 7100, Tunisia.ORCID 0000-0002-0131-1594
Nourhene MahdiHigh Institute of Sport and Physical Education of Kef, University of Jendouba, Kef 7100, Tunisia.ORCID 0000-0003-1054-3511
Slaheddine DelleliHigh Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax 3000, Tunisia.ORCID 0000-0003-0013-8774
Hamdi MessaoudiHigh Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax 3000, Tunisia.
Hamdi ChtourouHigh Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax 3000, Tunisia.ORCID 0000-0002-5482-9151
Zouheir SahnounPharmacology Department, Faculty of Medicine, University of Sfax, Sfax 3000, Tunisia.
Anissa BouassidaHigh Institute of Sport and Physical Education of Kef, University of Jendouba, Kef 7100, Tunisia.
Ezdine BouhlelLaboratory of Cardio-Circulatory, Respiratory, Metabolic and Hormonal Adaptations to Muscular Exercise, Faculty of Medicine Ibn El Jazzar, University of Sousse, Sousse 4000, Tunisia.
Hadi NobariHEME Research Group, Faculty of Sport Sciences, University of Extremadura, 10003 Cáceres, Spain.ORCID 0000-0001-7951-8977
Luca Paolo ArdigòDepartment of Neurosciences, Biomedicine and Movement Sciences, School of Exercise and Sport Science, University of Verona, Via Felice Casorati 43, 37131 Verona, Italy.ORCID 0000-0001-7677-5070
Emerson FranchiniMartial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of São Paulo, São Paulo 05508-030, Brazil.ORCID 0000-0002-0769-8398
University of Sfax · TNUniversity of Jendouba · TNUniversidad de Granada · ESUniversidade de São Paulo · BRUniversity of Sousse · TNUniversity of Verona · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study investigated low-dose caffeine ingestion, conditioning activity (CA) effects on psycho-physical performances in young taekwondo athletes. In a randomized, double-blind, counterbalanced, crossover design, 20 athletes (10 males; 17.5 ± 0.7 yrs) performed taekwondo-specific agility test (TSAT), 10 s/multiple frequency speed of kick test (FSKT-10s/FSKT-mult) after ingesting 3 mg·kg−1 caffeine (CAF) or placebo (PL) 60 min before performing standard warm-up without (NoCA) or with CA (3 × 10 vertical jumps above 40 cm), resulting in four experimental (PL + NoCA, CAF + NoCA, PL + CA, and CAF + CA) and one control (warm-up session without CAF or CA) conditions. Mood/physical symptoms (MPSS), subjective vitality (SVS), and feeling (FS) scales were analyzed post-to-pre for all conditions. Ratings of perceived-exertion and perceived-recovery status were determined after tests. For TSAT, CAF + CA induced better performance compared with all conditions (p < 0.001). For FSKT-10s and FSKT-mult, CAF + CA induced better performance compared with all conditions (p < 0.001). For MPSS, FS, CAF + NoCA induced higher scores than PL + NoCA and PL + CA (p = 0.002, 0.009 for MPSS; p = 0.014, 0.03 for FS). For SVS, PL + CA elicited lower scores than PL + NoCA and CAF + NoCA (p = 0.01, 0.004). Sex comparisons resulted in better performances for males for TSAT (p = 0.008), FSKT-10s (p < 0.001), FSKT-mult (p < 0.01), MPSS (p = 0.02), SVS (p = 0.028), and FS (p = 0.020) scores. Caffeine and conditioning activity are two efficient performance-enhancing strategies, which could synergistically result in greater psycho-physical performances.

Indexed as

CaffeineMartial ArtsAthletesEatingFemaleHumansMalePhysical Functional PerformanceCaffeinecombat sports agilityergogenic aidplyometric

Identifiers

PMID35276932
PMCPMC8838840
OpenAlexW4220678999

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.