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Effects of singing bowl exposure on Karolinska sleepiness scale and pupillographic sleepiness test: A randomised crossover study

BACKGROUND: The aim of this study was to investigate the effects on subjective and objective sleepiness of a stay above a large struck singing bowl compared to a relaxation period in a silent singing bowl. METHODS: Fifty-eight healthy subjects were recruited for the study, 48 participated on two day...

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Autores principales: Bergmann, Melanie, Riedinger, Stefan, Stefani, Ambra, Mitterling, Thomas, Holzknecht, Evi, Grassmayr, Peter, Högl, Birgit
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7263600/
https://www.ncbi.nlm.nih.gov/pubmed/32479559
http://dx.doi.org/10.1371/journal.pone.0233982
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author Bergmann, Melanie
Riedinger, Stefan
Stefani, Ambra
Mitterling, Thomas
Holzknecht, Evi
Grassmayr, Peter
Högl, Birgit
author_facet Bergmann, Melanie
Riedinger, Stefan
Stefani, Ambra
Mitterling, Thomas
Holzknecht, Evi
Grassmayr, Peter
Högl, Birgit
author_sort Bergmann, Melanie
collection PubMed
description BACKGROUND: The aim of this study was to investigate the effects on subjective and objective sleepiness of a stay above a large struck singing bowl compared to a relaxation period in a silent singing bowl. METHODS: Fifty-eight healthy subjects were recruited for the study, 48 participated on two days, one week apart, during the same timeslot. The Karolinska sleepiness scale was used to evaluate current subjective sleepiness, and the relative pupillary unrest index to assess objective sleepiness. In this randomized cross-over study, the intervention consisted of a 20-minute stay in a hammock while the singing bowl, positioned beneath, was struck seven times. The controlled comparator was a 20-minute stay in the same hammock above the singing bowl, but without being struck. After these two interventions subjective and objective sleepiness were re-evaluated. RESULTS: The mean relative pupillary unrest index values after relaxation in the struck and silent singing bowl groups were 0.74 and respectively 0.71 (p = 0.460). The median Karolinska sleepiness scale value after relaxation with the struck singing bowl was 3 compared with 4 (p = 0.041) for the silent singing bowl. DISCUSSION: This study evaluated the influence of a struck singing bowl on sleepiness during daytime. Subjective sleepiness was significantly lower after relaxation above a struck singing bowl. After gender stratification, the difference was still significant in women. Objective sleepiness was not different in both groups. Finally, we can only speculate if women may be more susceptible to subjective improvements in case of sleepiness and show another perception of relaxation in a struck singing bowl compared to men.
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spelling pubmed-72636002020-06-10 Effects of singing bowl exposure on Karolinska sleepiness scale and pupillographic sleepiness test: A randomised crossover study Bergmann, Melanie Riedinger, Stefan Stefani, Ambra Mitterling, Thomas Holzknecht, Evi Grassmayr, Peter Högl, Birgit PLoS One Research Article BACKGROUND: The aim of this study was to investigate the effects on subjective and objective sleepiness of a stay above a large struck singing bowl compared to a relaxation period in a silent singing bowl. METHODS: Fifty-eight healthy subjects were recruited for the study, 48 participated on two days, one week apart, during the same timeslot. The Karolinska sleepiness scale was used to evaluate current subjective sleepiness, and the relative pupillary unrest index to assess objective sleepiness. In this randomized cross-over study, the intervention consisted of a 20-minute stay in a hammock while the singing bowl, positioned beneath, was struck seven times. The controlled comparator was a 20-minute stay in the same hammock above the singing bowl, but without being struck. After these two interventions subjective and objective sleepiness were re-evaluated. RESULTS: The mean relative pupillary unrest index values after relaxation in the struck and silent singing bowl groups were 0.74 and respectively 0.71 (p = 0.460). The median Karolinska sleepiness scale value after relaxation with the struck singing bowl was 3 compared with 4 (p = 0.041) for the silent singing bowl. DISCUSSION: This study evaluated the influence of a struck singing bowl on sleepiness during daytime. Subjective sleepiness was significantly lower after relaxation above a struck singing bowl. After gender stratification, the difference was still significant in women. Objective sleepiness was not different in both groups. Finally, we can only speculate if women may be more susceptible to subjective improvements in case of sleepiness and show another perception of relaxation in a struck singing bowl compared to men. Public Library of Science 2020-06-01 /pmc/articles/PMC7263600/ /pubmed/32479559 http://dx.doi.org/10.1371/journal.pone.0233982 Text en © 2020 Bergmann et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Bergmann, Melanie
Riedinger, Stefan
Stefani, Ambra
Mitterling, Thomas
Holzknecht, Evi
Grassmayr, Peter
Högl, Birgit
Effects of singing bowl exposure on Karolinska sleepiness scale and pupillographic sleepiness test: A randomised crossover study
title Effects of singing bowl exposure on Karolinska sleepiness scale and pupillographic sleepiness test: A randomised crossover study
title_full Effects of singing bowl exposure on Karolinska sleepiness scale and pupillographic sleepiness test: A randomised crossover study
title_fullStr Effects of singing bowl exposure on Karolinska sleepiness scale and pupillographic sleepiness test: A randomised crossover study
title_full_unstemmed Effects of singing bowl exposure on Karolinska sleepiness scale and pupillographic sleepiness test: A randomised crossover study
title_short Effects of singing bowl exposure on Karolinska sleepiness scale and pupillographic sleepiness test: A randomised crossover study
title_sort effects of singing bowl exposure on karolinska sleepiness scale and pupillographic sleepiness test: a randomised crossover study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7263600/
https://www.ncbi.nlm.nih.gov/pubmed/32479559
http://dx.doi.org/10.1371/journal.pone.0233982
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