The Effect of Water Resistance Therapy on the Impulse Dispersion of Aerosols During Sustained Phonation
Köberlein MC, Hermann L, Gantner S, Tur B, Westphalen C, Kuranova L, Döllinger M, Kniesburges S, Kruse SA, Echternach M (2022)
Publication Type: Journal article
Publication year: 2022
Journal
DOI: 10.1016/j.jvoice.2022.05.019
Abstract
Introduction: Group singing has been associated with higher transmission risks via exhaled and spread aerosols in the CoVID19 pandemic. For this reason, many musical activities, such as rehearsals and lessons, but also voice therapy sessions, have been restricted in many countries. Consequently, transmission risks and pathways have been studied, such as aerosol amounts generated by exhalation tasks, convectional flows in rooms, or the impulse dispersion of different kinds of phonation. The use of water resistance exercises such as those utilizing LAX VOX®, are common in voice lessons and as vocal warm-ups. With this context, this study investigates the impulse dispersion characteristics of aerosols during a voiced water resistance exercise in comparison to normal singing. Methods: Twelve professional singers (six male, six female) were asked to phonate a stable pitch through a silicone tube into a bottle filled with water, holding the end of the tube 5 cm below the surface. Before performing the tasks, the singers inhaled the vapor consisting of 0.5 L base liquid from an e-cigarette. The exhaled gas cloud coming out of the bottle was recorded in all three spatial directions and the dispersion was measured as a function of time. Results: At the end of the phonation task, the median distance to the front was 0.55 m and the median of the lateral expansion of the cloud was 0.89 m, the maximum to the front reached 0.88 m, and the maximum of lateral expansion 1.05 m. For the upwards direction of the clouds a median of 1.00 m and a maximum of 1.34 m from the mouth were measured. Three seconds after the end of the task, the medians were declining. Conclusion: The exhaled aerosol cloud can expand despite the obstacle of the water when using LAX VOX® during phonation.
Authors with CRIS profile
Bogac Tur
Lehrstuhl für Hals-, Nasen- und Ohrenheilkunde
Michael Döllinger
Professur für Computational Medicine (DFG-Forschungsprofessur)
Stefan Kniesburges
Involved external institutions
Germany (DE)How to cite
APA:
Köberlein, M.C., Hermann, L., Gantner, S., Tur, B., Westphalen, C., Kuranova, L.,... Echternach, M. (2022). The Effect of Water Resistance Therapy on the Impulse Dispersion of Aerosols During Sustained Phonation. Journal of Voice. https://doi.org/10.1016/j.jvoice.2022.05.019
MLA:
Köberlein, Marie Christine, et al. "The Effect of Water Resistance Therapy on the Impulse Dispersion of Aerosols During Sustained Phonation." Journal of Voice (2022).
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