Evidence map›Paper›PMID 35351196›Full record

ArticleBMC sports science, medicine & rehabilitation2022

Acute effects of beetroot juice and caffeine co-ingestion during a team-sport-specific intermittent exercise test in semi-professional soccer players: a randomized, double-blind, placebo-controlled study.

Erfan Berjisian, Kerry McGawley, Bryan Saunders, Raúl Domínguez, Majid S Koozehchian, Caio Victor Coutinho de Oliveira, Ramin Rafiei, Hossein Miraftabi, Amir Sarshin, Alireza Naderi

Registry-linked trialAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC sports science, medicine & rehabilitation, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05657093 ("Effects of Beetroot Juice os Sport Performane in Elite Swimmers. A Randomized Clinical Trial"), which is not on this map. Cited by 11 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 5 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.

NCT05657093 nacompletednot on this map

"Effects of Beetroot Juice os Sport Performane in Elite Swimmers. A Randomized Clinical Trial"

TypeinterventionalSponsorUniversidad Francisco de VitoriaRan2022 to 2022Enrolled18ConditionsErgogenicsArmsBeetroot Juice, Placebo
3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
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  4. Pooled it
  5. Pooled it
  6. Trial
  7. Trial
  8. Article
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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

10 authors.

Erfan BerjisianDepartment of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Tehran University, Tehran, Iran.
Kerry McGawleySwedish Winter Sports Research Centre, Department of Health Sciences, Mid Sweden University, Östersund, Sweden.
Bryan SaundersApplied Physiology and Nutrition Research Group, School of Physical Education and Sport, Rheumatology Division, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, São Paulo, SP, Brazil.
Raúl DomínguezDepartamento de Motricidad Humana y Rendimiento Deportivo, Faculty of Education Sciences, Universidad de Sevilla, Sevilla, Spain.
Majid S KoozehchianDepartment of Kinesiology, Jacksonville State University, Jacksonville, AL, 36265, USA.
Caio Victor Coutinho de OliveiraMedical Sciences Faculty, Facisa, Campina Grande, Paraíba, Brazil.
Ramin RafieiDepartment of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Tehran University, Tehran, Iran.
Hossein MiraftabiDepartment of Exercise Physiology, Faculty of Physical Education and Sport Sciences, Tehran University, Tehran, Iran.
Amir SarshinDepartment of Exercise Physiology, Karaj Branch, Islamic Azad University, Karaj, Iran.
Alireza NaderiDepartment of Exercise Physiology, Borujerd Branch, Islamic Azad University, Borujerd, Iran. Naderi_a@yahoo.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBeetroot juice (BJ) and caffeine (CAF) are considered as ergogenic aids among athletes to enhance performance, however, the ergogenic effects of BJ and CAF co-ingestion are unclear during team-sport-specific performance. This study aimed to investigate the acute effects of BJ and CAF co-ingestion on team-sport-specific performance, compared with placebo (PL), BJ, and CAF alone.

methodSixteen semi-professional male soccer players (age: 19.8 ± 2.2 years, body mass: 69.2 ± 6.1 kg, height: 177.3 ± 6.0 cm) completed four experimental trials using a randomized, double-blind study design: BJ + CAF, CAF + PL, BJ + PL, and PL + PL. Countermovement jump with arm swing (CMJAS) performance and cognitive function by Stroop Word-Color test were evaluated before and after the Yo-Yo Intermittent Recovery Test level 1 (YYIR1). Also, rate of perceived exertion (RPE), heart rate, and gastrointestinal (GI) discomfort were measured during each session.

resultsNo significant differences were shown between test conditions for total distance covered in YYIR1 (BJ + CAF: 1858 ± 455 m, CAF + PL: 1798 ± 422 m, BJ + PL: 1845 ± 408 m, PL + PL 1740 ± 362 m; p = 0.55). Moreover, CMJAS performance, cognitive function, and RPE during the YYIR1 were not significantly different among conditions (p > 0.05). However, the average heart rate during the YYIR1 was higher in CAF + PL compared to PL + PL (by 6 ± 9 beats/min; p < 0.05), and GI distress was greater in BJ + CAF compared to PL + PL (by 2.4 ± 3.6 a.u.; p < 0.05).

conclusionThese results suggest, neither acute co-ingestion of BJ + CAF nor BJ or CAF supplementation alone significantly affected team-sport-specific performance compared to the PL treatment.

Indexed as

Countermovement jumpErgogenic aidsNitrateTeam-sport performanceYo–Yo test

Identifiers

PMID35351196
PMCPMC8966187

What OpenQuestion holds

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Registered trials

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.