Evidence map›Paper›PMID 32972979›Full record

Observational studyBritish journal of sports medicine2021

Successful return to professional men's football (soccer) competition after the COVID-19 shutdown: a cohort study in the German Bundesliga.

Tim Meyer, Dietrich Mack, Katrin Donde, Oliver Harzer, Werner Krutsch, Annika Rössler, Janine Kimpel, Dorothee von Laer, Barbara C Gärtner

Abstract readObservational Study
In one paragraph

Observational study in British journal of sports medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing 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

62 citing papers in PubMed.

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  18. Impact and control of the COVID pandemic in an elite sports club: Real Madrid.Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia · 2023
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2 more citing papers are in PubMed but not listed here.

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

9 authors.

Tim MeyerInstitute of Sports and Preventive Medicine, Saarland University, Saarbrücken, Saarland, Germany tim.meyer@mx.uni-saarland.de.ORCID http://orcid.org/0000-0003-3425-4546
Dietrich MackBioscientia Laboratory Ingelheim, Ingelheim, Germany.
Katrin DondeBioscientia Laboratory Ingelheim, Ingelheim, Germany.
Oliver HarzerBioscientia Laboratory Ingelheim, Ingelheim, Germany.
Werner KrutschDepartment of Trauma Surgery, Universitatsklinikum Regensburg, Regensburg, Germany.
Annika RösslerInstitute of Virology, Department of Hygiene, Microbiology and Public Health, Medical University Innsbruck, Innsbruck, Austria.
Janine KimpelInstitute of Virology, Department of Hygiene, Microbiology and Public Health, Medical University Innsbruck, Innsbruck, Austria.ORCID http://orcid.org/0000-0002-5210-7905
Dorothee von LaerInstitute of Virology, Department of Hygiene, Microbiology and Public Health, Medical University Innsbruck, Innsbruck, Austria.ORCID http://orcid.org/0000-0001-5825-7237
Barbara C GärtnerInstitute of Medical Microbiology and Hygiene, Universitatsklinikum des Saarlandes und Medizinische Fakultat der Universitat des Saarlandes, Homburg, Saarland, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo evaluate the restart of the German Bundesliga (football (soccer)) during the COVID-19 pandemic from a medical perspective.

methodsParticipants were male professional football players from the two highest German leagues and the officials working closely with them. Our report covers nine match days spread over 9 weeks (May to July 2020). Daily symptom monitoring, PCR testing for SARS-CoV-2 RNA twice weekly, and antibody tests (on two occasions-early during the phase in May 2020 and in the week of the last match) were conducted. Target variables were: (1) onset of typical COVID-19 symptoms, (2) positive PCR results, and (3) IgG seroconversion against SARS-CoV-2. All detected seroconversions were controlled by neutralisation tests.

findingsSuspicious symptoms were reported for one player; an immediate additional PCR test as well as all subsequent diagnostic and antibody tests proved negative for coronavirus. Of 1702 regularly tested individuals (1079 players, 623 officials members), 8 players and 4 officials tested positive during one of the first rounds of PCR testing prior to the onset of team training, 2 players during the third round. No further positive results occurred during the remainder of the season. 694 players and 291 officials provided two serum samples for antibody testing. Nine players converted from negative/borderline to positive (without symptoms); two players who initially tested positive tested negative at the end of the season. 22 players remained seropositive throughout the season. None of the seroconversions was confirmed in the neutralisation test.

conclusionProfessional football training and matches can be carried out safely during the COVID-19 pandemic. This requires strict hygiene measures including regular PCR testing.

Indexed as

COVID-19 Nucleic Acid TestingReturn to SportSARS-CoV-2AdultAntibodies, ViralCohort StudiesCOVID-19GermanyHumansImmunoglobulin GMaleNeutralization TestsProspective StudiesSafetySoccerSymptom AssessmentAntibodies, ViralImmunoglobulin Gdiagnosisepidemiologyinfectionrespiratory

Identifiers

PMID32972979
PMCPMC7788215

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.