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http://www.codas.periodikos.com.br/article/doi/10.1590/2317-1782/20232021244en
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Reference values for electroglottographic data of elderly women

Valores de referência para dados eletroglotográficos de idosas

Bárbara de Faria Morais Nogueira; Ana Cristina Côrtes Gama; Flávio Barbosa Nunes; Adriane Mesquita de Medeiros

http://dx.doi.org/10.1590/2317-1782/20232021244en CoDAS, vol.35, n5, e20210244, 2023
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Abstract

Purpose

To present reference values for fundamental frequency data and closed-phase quotient extracted from electroglottography in older women and verify if they differ from laryngeal examination results.

Methods

Observational analytical cross-sectional study in 73 older women, aged 60 to 84 years, using electroglottographic and laryngeal examinations. Each participant’s voice sample had a sustained prolonged vowel /a/ emitted at the usual frequency and intensity, in the modal register. Fundamental frequency (F0) and vocal fold contact quotient (CQ) were extracted from the electroglottography. Data were descriptively analyzed with measures of central tendency and dispersion of continuous variables. To establish whether continuous electroglottography variables differed from the laryngeal diagnosis, Student’s t-test (parametric test) and Mann-Whitney (non-parametric test) were performed. The significance level in all tests was set at 5%.

Results

Most participants did not have laryngeal changes, while 27.4% had presbylarynx. The mean electroglottographic measures were 187.24 Hz for F0 and 48.49% for CQ. There was no statistical significance between laryngeal examinations and EGG measures.

Conclusion

Older women have mean electroglottographic F0 values of 187.24 Hz and CQ of 48.49%. Electroglottographic F0 and CQ measures did not change with the presence of the presbylarynx in older women.

Keywords

Elderly; Voice; Aging; Phonation; Women

Resumo

Objetivo

Apresentar valores de referência para os dados de frequência fundamental e quociente de fase fechada extraído da eletroglotografia em idosas e verificar se diferem com o resultado do exame laríngeo.

Método

Estudo observacional analítico transversal, realizado com 73 idosas na faixa etária de 60 a 84 anos. Foram realizadas avaliações eletroglotográficas e laríngeas. O material de voz coletado de cada participante foi a emissão sustentada da vogal /a/, emitida em frequência e intensidade habituais, no registro modal, de modo prolongado. As medidas eletroglotográficas extraídas foram: Frequência fundamental (F0) e quociente de contato (CQ) extraídos da eletroglotografia (EGG). Foi realizada análise descritiva dos dados por meio da análise das medidas de tendência central e de dispersão das variáveis contínuas. Para estabelecer se as variáveis contínuas do EGG diferem de acordo com o diagnóstico laríngeo, foram utilizados os testes t-Student (teste paramétrico) e Mann-Whitney (não paramétrico). Para todos os testes foi considerado o nível de significância de 5%.

Resultados

A maioria das participantes não possui alterações laríngeas, 27,4% têm presbilaringe. A média das medidas eletoglotográficas foram: 187,24 Hz de F0 e 48,49% de QC. Não houve significância estatística ao comparar o exame laríngeo segundo as medidas do EGG.

Conclusão

Mulheres idosas apresentam valores médios de F0 EGG de 187,24 Hz. O valor médio obtido no QC foi de 48,49%. As medidas eletroglotográficas de F0 e QC não se modificaram com a presença de presbilaringe em idosas.

Palavras-chave

Idoso; Voz; Envelhecimento; Fonação; Mulheres

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