How Much Loading Does Water Resistance Voice Therapy Impose on the Vocal Folds? An Experimental Human Study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F20%3A00496969" target="_blank" >RIV/61388998:_____/20:00496969 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0892199718303709?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0892199718303709?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jvoice.2018.10.011" target="_blank" >10.1016/j.jvoice.2018.10.011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

How Much Loading Does Water Resistance Voice Therapy Impose on the Vocal Folds? An Experimental Human Study

Popis výsledku v původním jazyce

Water resistance voice therapy applies phonation in to water through a tube. This study investigates how strenuous this therapy can be for the vocal folds in terms of impactstress (IS). It further examines whether it is possible to estimate the IS using the contact quotient (CQ) and maximum derivative from an electroglottogram (EGG). A male participant sustained a rounded back vowel [u:] or [o:] at a comfortable speaking pitch and loudness, and phonated into a silicone ´LaxVox´ tube submerged 2 cm in water. High-speed video laryngoscopy was performed with a rigid scope. Oral air pressure (Poral) was registered in a mouth piece through which an endo-scope was inserted into the larynx. An EGG was recorded. nThe CQ EGG from the EGG and the closed quotient from the glottal width (CQarea) increased, while the maximum glottal amplitude and absolute value of derivative minimum (dmin) and also the derivative maximum from the EGG decreased for phonation into water. Normalized amplitude quotient from the glottal width variational so decreased but the change was not significant. Based on the glottal a reafindings, water resistance therapy does not seem to increase vocal fold loading (in terms of increased IS) even if the increase of CQ area, and CQ EGG suggest so. CQ EGG may qualitatively correspond to that of area, but the reliability of CQ (from the glottal area or the EGG) and the maximum derivative from the EGG as estimates of IS in semi occlusion exercises warrant further studies.

Název v anglickém jazyce

How Much Loading Does Water Resistance Voice Therapy Impose on the Vocal Folds? An Experimental Human Study

Popis výsledku anglicky

Water resistance voice therapy applies phonation in to water through a tube. This study investigates how strenuous this therapy can be for the vocal folds in terms of impactstress (IS). It further examines whether it is possible to estimate the IS using the contact quotient (CQ) and maximum derivative from an electroglottogram (EGG). A male participant sustained a rounded back vowel [u:] or [o:] at a comfortable speaking pitch and loudness, and phonated into a silicone ´LaxVox´ tube submerged 2 cm in water. High-speed video laryngoscopy was performed with a rigid scope. Oral air pressure (Poral) was registered in a mouth piece through which an endo-scope was inserted into the larynx. An EGG was recorded. nThe CQ EGG from the EGG and the closed quotient from the glottal width (CQarea) increased, while the maximum glottal amplitude and absolute value of derivative minimum (dmin) and also the derivative maximum from the EGG decreased for phonation into water. Normalized amplitude quotient from the glottal width variational so decreased but the change was not significant. Based on the glottal a reafindings, water resistance therapy does not seem to increase vocal fold loading (in terms of increased IS) even if the increase of CQ area, and CQ EGG suggest so. CQ EGG may qualitatively correspond to that of area, but the reliability of CQ (from the glottal area or the EGG) and the maximum derivative from the EGG as estimates of IS in semi occlusion exercises warrant further studies.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10307 - Acoustics

Projekt

<a href="/cs/project/GA16-01246S" target="_blank" >GA16-01246S: Počítačové a experimentální modelování samobuzených kmitů hlasivek a vliv jejich poškození na lidský hlas</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Voice

ISSN

0892-1997

e-ISSN

—

Svazek periodika

34

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

387-397

Kód UT WoS článku

000540867600010

EID výsledku v databázi Scopus

2-s2.0-85057057451