Evidence map›Paper›PMID 34069419›Full record

ArticleInternational journal of environmental research and public health2021

Airflow and Air Velocity Measurements While Playing Wind Instruments, with Respect to Risk Assessment of a SARS-CoV-2 Infection.

Claudia Spahn, Anna Maria Hipp, Bernd Schubert, Marcus Rudolf Axt, Markus Stratmann, Christian Schmölder, Bernhard Richter

Open access · goldAbstract read
In one paragraph

Article in International journal of environmental research and public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

10 citing papers in PubMed, 23 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 2 institutions in 1 country.

Claudia SpahnFreiburg Institute of Musicians' Medicine, University Medical Center Freiburg, University of Music Freiburg, Medical Faculty of the Albert-Ludwigs-University Freiburg, 79110 Freiburg i.Br., Germany.
Anna Maria HippFreiburg Institute of Musicians' Medicine, University Medical Center Freiburg, University of Music Freiburg, Medical Faculty of the Albert-Ludwigs-University Freiburg, 79110 Freiburg i.Br., Germany.
Bernd SchubertTintschl BioEnergie und Strömungstechnik AG, Tintschl Unternehmensgruppe, 91058 Erlangen, Germany.
Marcus Rudolf AxtBamberg Symphony, Bavarian State Philharmonic Orchestra, 96047 Bamberg, Germany.
Markus StratmannBamberg Symphony, Bavarian State Philharmonic Orchestra, 96047 Bamberg, Germany.
Christian SchmölderBamberg Symphony, Bavarian State Philharmonic Orchestra, 96047 Bamberg, Germany.
Bernhard RichterFreiburg Institute of Musicians' Medicine, University Medical Center Freiburg, University of Music Freiburg, Medical Faculty of the Albert-Ludwigs-University Freiburg, 79110 Freiburg i.Br., Germany.
University of Freiburg · DEUniversity Medical Center Freiburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Due to airborne transmission of the coronavirus, the question arose as to how high the risk of spreading infectious particles can be while playing a wind instrument. To examine this question and to help clarify the possible risk, we analyzed 14 wind instruments, first qualitatively by making airflows visible while playing, and second quantitatively by measuring air velocity at three distances (1, 1.5, 2 m) in the direction of the instruments' bells. Measurements took place with wind instrumentalists of the Bamberg Symphony in their concert hall. Our findings highlight that while playing, no airflows escaping from any of the wind instruments-from the bell with brass instruments or from the mouthpiece, keyholes or bell with woodwinds-were measurable beyond a distance of 1.5 m, regardless of volume, pitch or what was played. With that, air velocity while playing corresponded to the usual value of 1 m/s in hall-like rooms. For air-jet woodwinds, alto flute and piccolo, significant air movements were seen close to the mouthpiece, which escaped directly into the room.

Indexed as

COVID-19Air MovementsHumansRisk AssessmentSARS-CoV-2dispersion of airborne transmissionperformance studiesSARS-CoV-2 pandemic

Identifiers

PMID34069419
PMCPMC8159134
OpenAlexW3161949623

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.