Evidence map›Paper›PMID 36247936›Full record

ArticleBiology of sport2022

Changes of physical match performance after the COVID-19 lockdown in professional soccer players according to their playing position.

Łukasz Radzimiński, Miguel Lorenzo-Martinez, Marek Konefał, Paweł Chmura, Marcin Andrzejewski, Zbigniew Jastrzębski, Alexis Padrón-Cabo

Open access · goldAbstract read
In one paragraph

Article in Biology of sport, 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
2.8field-weighted citation impact, top 10% 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

11 citing papers in PubMed, 15 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

7 authors at 5 institutions in 2 countries.

Łukasz RadzimińskiDepartment of Physiology and Biochemistry, Gdansk University of Physical Education and Sport, Gdansk, Poland.
Miguel Lorenzo-MartinezFaculty of Education and Sports Sciences, University of Vigo, Pontevedra, Spain.
Marek KonefałDepartment of Biological and Motor Sport Bases, University School of Physical Education, Wrocław, Poland.
Paweł ChmuraDepartment of Team Games, University School of Physical Education, Wrocław, Poland.
Marcin AndrzejewskiDepartment of Recreation, University School of Physical Education, Poznań, Poland.
Zbigniew JastrzębskiDepartment of Physiology and Biochemistry, Gdansk University of Physical Education and Sport, Gdansk, Poland.
Alexis Padrón-CaboDepartment of Physical Education and Sport Science, University of A Coruña, 15071, A Coruña, Spain.
Gdansk University of Physical Education and Sport · PLUniversity School of Physical Education in Wroclaw · PLUniversidade da Coruña · ESUniversidade de Vigo · ESUniversity School of Physical Education in Kraków · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study was to evaluate the impact of the pandemic lockdown, which included training cessation and home-based training, on physical performance in professional soccer players from the Polish Ekstraklasa according to their playing position. The research was based on 3137 players' individual match performance observations during the 2019/2020 season divided into before (26 matchdays) and after (11 matchdays) lockdown periods. The data were collected using the computerised multiple-camera optical tracking system TRACAB (ChryronHego VID, New York, NY) with a sampling frequency of 25 Hz. Independently of playing position, a significant (p < 0.001) reduction in season resumption metrics of total distance (-0.9%), jogging (-1.6%), running (-3.4%) and high-speed running (-2.5%), with a contemporaneous increase in walking distance (1.4%), was noted in relation to pre-lockdown performance. A reduction in high-speed running was observed in central defenders (p < 0.05), central midfielders (p < 0.01) and forwards (p < 0.05). No significant decrease in sprinting or maximal running velocity was observed. The COVID-19 lockdown negatively influenced the physical performance in professional soccer players.

Indexed as

FootballHigh-speed runningPandemicPolish EkstraklasaTime-motion analysis

Identifiers

PMID36247936
PMCPMC9536384
OpenAlexW4224297843

What OpenQuestion holds

Textmetadata
LicenceCC BY-SA
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.