Maximum phonation time and s/z ratio in a large child cohort.
J Voice
; 26(5): 675.e1-4, 2012 Sep.
Article
em En
| MEDLINE
| ID: mdl-22727123
ABSTRACT
AIM:
The purpose of this study was to provide normal values for maximum phonation time (MPT) and the s/z ratio by examining 1660 children aged 4-12 years and without vocal signs or symptoms.METHODS:
The technique was based on the sustained emission of the /a/ vowel and fricatives /s/ and /z/.RESULTS:
The average of the MPT in children of the different age groups was as follows 6.09 seconds for the age group 4-6 years (males, 5.97; female, 6.21 seconds), 7.94 seconds for the age group 7-9 years (males, 8.07; females, 7.79 seconds), and 8.98 for the age group 10-12 years (males, 9.05; females, 8.92 seconds). The overall average for males was 7.78 and females 7.64 seconds. The s/z ratio was near 1.0 in most children but above 1.2 in 133 children and below 0.8 in 133 children.CONCLUSION:
These values of MPT and s/z ratio can be used as normative in further pediatric studies.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fonação
/
Acústica da Fala
/
Voz
Limite:
Child
/
Child, preschool
/
Female
/
Humans
/
Male
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article