Assessment of changes in laryngeal configuration and voice parameters among different frequencies of neuromuscular electrical stimulation (NMES) and cumulative effects of NMES in a normophonic subject: a pilot study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61384984%3A51110%2F23%3AN0000067" target="_blank" >RIV/61384984:51110/23:N0000067 - isvavai.cz</a>

Result on the web

<a href="https://www.jvoice.org/article/S0892-1997(21)00114-4/abstract/" target="_blank" >https://www.jvoice.org/article/S0892-1997(21)00114-4/abstract/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jvoice.2021.03.018" target="_blank" >10.1016/j.jvoice.2021.03.018</a>

Result language

angličtina

Original language name

Assessment of changes in laryngeal configuration and voice parameters among different frequencies of neuromuscular electrical stimulation (NMES) and cumulative effects of NMES in a normophonic subject: a pilot study

Original language description

Summary: Introduction. Neuromuscular electrical stimulation (NMES) is a complementary resource to voice therapy that can be used for the treatment of hypofunctional voice disorders. Although positive clinical studies have been reported, neutral and even potentially harmful effects of NMES are also described in the literature. Furthermore, in the studies examined by the authors, the use of different methods of NMES have been identified, which further contributes to the inconsistent results found among studies. Moreover, limited rationale is provided for the chosen NMES parameters such as electrode placement, frequency of NMES and length of treatment. The aims of this pilot study were to investigate the a) impact of different frequencies of NMES on glottal configuration and vocal fold vibration patterns and b) changes in laryngeal configuration and vocal output across 12 minutes of NMES. Method. Three experiments were carried out looking at changes in laryngeal configuration and voice output using different imaging techniques (fibreoptic nasolaryngoscopy and high-speed video), acoustical analysis (F0, formant analysis, SPL, CPPS and LHSR values), electroglottography (EGG) and Relative Fundamental Frequency (RFF) analyses. Glottal parameters and acoustical measures were recorded before, during, and after stimulation. Data was collected at rest and during phonation. Results. Overall the results showed global changes in laryngeal configuration from normal to hyperfunctional (ie, increased RFF, SPL, CQ, and stiffness). Changes were more pronounced for lower frequencies of NMES and were significant within less than three minutes of application. Conclusion. NMES is an effective resource for the activation of intrinsic laryngeal muscles producing significant levels of adduction within few minutes of application. Lower NMES frequencies produced greater muscle activation when compared to higher frequencies.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30206 - Otorhinolaryngology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Journal of Voice

ISSN

08921997

e-ISSN

—

Volume of the periodical

37

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

20

Pages from-to

P632.E1-63222.E20

UT code for WoS article

001040981800001

EID of the result in the Scopus database

2-s2.0-85107019639