Evidence map›Paper›PMID 33374947›Full record

Trial reportNutrients2020

Effects of Different Doses of Caffeinated Coffee on Muscular Endurance, Cognitive Performance, and Cardiac Autonomic Modulation in Caffeine Naive Female Athletes.

Raci Karayigit, Alireza Naderi, Firat Akca, Carlos Janssen Gomes da Cruz, Amir Sarshin, Burak Caglar Yasli, Gulfem Ersoz, Mojtaba Kaviani

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

Trial report in Nutrients, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 9 pooled it
3.6field-weighted citation impact, top 7% 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

35 citing papers in PubMed, 9 syntheses or guidelines pooled it, 40 citations in OpenAlex.

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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

8 authors at 5 institutions in 4 countries.

Raci KarayigitFaculty of Sport Sciences, Ankara University, Gölbaşı, Ankara 06830, Turkey.ORCID 0000-0001-9058-1918
Alireza NaderiDepartment of Sport Physiology, Boroujerd Branch, Islamic Azad University, Boroujerd 6915136111, Iran.
Firat AkcaFaculty of Sport Sciences, Ankara University, Gölbaşı, Ankara 06830, Turkey.ORCID 0000-0002-0764-105X
Carlos Janssen Gomes da CruzLaboratory of Exercise Physiology, Faculty of Physical Education, University of Brasilia, Brasilia 70910-900, Brazil.
Amir SarshinDepartment of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Karaj Branch 3149968111, Iran.
Burak Caglar YasliDepartment of Physical Education and Sports, Iğdır University, Igdir 76000, Turkey.
Gulfem ErsozFaculty of Sport Sciences, Ankara University, Gölbaşı, Ankara 06830, Turkey.ORCID 0000-0001-8813-3032
Mojtaba KavianiFaculty of Pure & Applied Science, School of Nutrition and Dietetics, Acadia University, Wolfville, NS B4P 2R6, Canada.ORCID 0000-0002-1186-3384
Ankara University · TRAcadia University · CAIğdır Üniversitesi · TRIslamic Azad University Boroujerd Branch · IRUniversidade de Brasília · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Caffeine is widely consumed among elite athletes for its well-known ergogenic properties, and its ability to increase exercise performance. However, studies to date have predominantly focused on the anhydrous form of caffeine in male participants. The aim of the study was to investigate the effect of caffeinated coffee ingestion on lower-upper body muscular endurance, cognitive performance, and heart rate variability (HRV) in female athletes. A total of 17 participants (mean ± standard deviation (SD): age = 23 ± 2 years, body mass = 64 ± 4 kg, height = 168 ± 3 cm) in a randomized cross-over design completed three testing sessions, following the ingestion of 3 mg/kg/bm of caffeine (3COF), 6 mg/kg/bm of caffeine (6COF) provided from coffee or decaffeinated coffee (PLA) in 600 mL of hot water. The testing results included: (1) repetition number for muscular endurance performance; (2): reaction time and response accuracy for cognitive performance; (3): HRV parameters, such as standard deviation of normal-to-normal (NN) intervals (SDNN), standard deviation of successive differences (SDSD), root mean square of successive differences (RMSSD), total power (TP), the ratio of low- and high-frequency powers (LF/HF), high-frequency power (HF), normalized HF (HFnu), low-frequency power (LF), and normalized LF (LFnu). A one-way repeated measures ANOVA revealed that 3COF (

Indexed as

AthletesAdultArousalCaffeineCoffeeCognitionCross-Over StudiesDouble-Blind MethodFemaleGlucoseHeartHeart RateHumansLactic AcidMalePain PerceptionCaffeineCoffeeGlucoseLactic Acidcoffeeergogenic aid: female athletesstrength

Identifiers

PMID33374947
PMCPMC7821939
OpenAlexW3116418514

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.