Evidence map›Paper›PMID 36494482›Full record

ArticleScientific reports2022

Effects of match contextual factors on internal and external load in elite Brazilian professional soccer players through the season.

Rodrigo Aquino, Rodrigo Guimarães, Geraldo Oliveira Carvalho Junior, Filipe Manuel Clemente, Tomas García-Calvo, Juan José Pulido, Hadi Nobari, Gibson Moreira Praça

Abstract read
In one paragraph

Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

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

11 citing papers in PubMed.

  1. Article
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  4. Observational
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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.

Rodrigo AquinoLabSport, Post-Graduate Program in Physical Education, Centre of Physical Education and Sports, Federal University of Espírito Santo, Vitória, Brazil.
Rodrigo GuimarãesDepartment of Physiology, América Football Club, Belo Horizonte, Brazil.
Geraldo Oliveira Carvalho JuniorDepartment of Physiology, América Football Club, Belo Horizonte, Brazil.
Filipe Manuel ClementeEscola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Rua Escola Industrial e Comercial de Nun'Álvares, 4900-347, Viana do Castelo, Portugal.
Tomas García-CalvoFaculty of Sport Sciences, University of Extremadura, Avenida de la Universidad, 10003, Cáceres, Spain.
Juan José PulidoFaculty of Education and Psychology, University of Extremadura, Avenida de Elvas, 06006, Badajoz, Spain.
Hadi NobariFaculty of Sport Sciences, University of Extremadura, Avenida de la Universidad, 10003, Cáceres, Spain. hadi.nobari1@gmail.com.
Gibson Moreira PraçaUniversidade Federal de Minas Gerais, Belo Horizonte, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to investigate the effects of contextual match factors (quality of opposition, match outcome, change of head coach or playing style) on internal and external load in elite Brazilian professional soccer players, considering the total and effective playing time. Twenty-two professional male outfield soccer players participated in this study (age 28.4 ± 4.9 years; height 1.78 ± 0.1 cm; body mass 72.9 ± 7.1 kg). The internal (rating of perceived exertion-based load [sRPE]) and external load (distance and accelerometry-based measures) were recorded during 38 matches, over the 2021 season of the Brazilian National 1st Division League using a global position system (10 Hz) integrated with an accelerometer (200 Hz). The main results were: (i) matches played against weak opponents presented greater values of sprinting distances compared to matches against intermediate and strong opponents; (ii) players covered greater high-intensity running distances when drawing than winning the matches; (iii) matches with assistant coaches presented higher mean speed relative to effective playing time (MSEPT) compared to coach 1 and coach 2 conditions. In addition, players covered greater MSEPT and high-acceleration in matches with coach 2 vs. coach 3; (iv) finally, small positive correlations were observed between positional attack sequences and MSTPT, total distance covered, and acceleration. Coaches and practitioners should consider these results when interpreting external load variables during elite Brazilian soccer matches.

Indexed as

Athletic PerformanceRunningSoccerAccelerationAccelerometryAdultGeographic Information SystemsHumansMaleYoung Adult

Identifiers

PMID36494482
PMCPMC9734126

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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.