Tempo máximo de fonação de crianças pré-escolares

Abstract

Past studies on the maximum phonation time (MPT) in children have shown different results in duration. This factor may reflect the neuromuscular and aerodynamic control of phonation in patients; such control might be used as an indicator of other evaluation methods on a qualitative and quantitative basis. Aim: to verify measures of MPT and voice acoustic characteristics in 23 children aged four to six year and eight months. Method: The sampling process comprised a questionnaire that was sent to parents, followed by auditory screening and a voice perceptive-auditory assessment based on the R.A.S.A.T. scale. Data collection included the MPT. Study: a prospective and cross-sectional study. Results: The MPT was 7.42s, 6.35s and 7.19s; as age increased, the MPT also increase significantly; the s/z relation at all ages was close to one. Conclusions: The results mostly agree with the medical literature.MPT values, however, were higher than in other Brazilian studies. It may be concluded that the ages that were analyzed are going through neuromuscular maturation; lack of structural maturity and neuromuscular control was more evident in chidlren aged four years.

Capacidade vital forçada e tempos máximos de fonação em relação à circunferência abdominal e ao estado nutricional de crianças

“…The MPT is an objective test widely used in clinical evaluation of speech and voice, which provides information about the respiratory support and the glottal efficiency, besides the aerodynamic and neuromuscular control on the vocal production of an individual 2 . Thus, a sustained emission may indicate and quantify the relation of the muscular action and mucosal waves of the vocal folds and the lungs' air flow, reflecting on physical and functional conditions 15 .…”

“…In order to collect the MPT children were positioned standing with their arms along their bodies. For the utterance of the /a/ and /e/ phonemes, they were advised to make sustained emissions, after a deep inspiration, in loudness, pitch, quality and speed common on speech 15 . For the utterance of /ė/, they were advised to emit the /e/ in a voiceless and extended way without noise or vocalization, keeping the articulatory posture of the utterance of the /e/ vowel closed 7 .…”

“…For the utterance of /ė/, they were advised to emit the /e/ in a voiceless and extended way without noise or vocalization, keeping the articulatory posture of the utterance of the /e/ vowel closed 7 . Each child performed three sustenance of each MPT up to the end of the expiration, with a pause of 10 seconds among each one, timing every emission in seconds and only the highest value out of three measures was considered 4,15 .…”

Análise vocal na infância: uma revisão integrativa

“…Observa-se, também, que a f0 é um parâmetro acústico dependente da tarefa de fala e que a sua análise, considerando a fala encadeada, Os resultados da literatura sugerem que as medidas acústicas de quociente de perturbação da frequência (PPQ), quociente de perturbação da amplitude (APQ) e as medidas de ruído, como a Proporção Harmônico Ruído (PHR), não sofrem interferência do desenvolvimento da laringe durante a infância, indicando que a vibração das pregas vocais não se torna mais estável e periódica com a idade 8 . Os tempos máximos de fonação (TMF) na população pediátrica foram objeto de estudo de duas pesquisas 17,18 , sendo que a primeira analisou os TMF em crianças de quatro a seis anos (Figura 3).…”

Autoavaliação vocal e avaliação perceptivo-auditiva da voz em mulheres com doença tireoidiana

“…for the descriptive correlated among them, two assessment tools may be taken into consideration: auditory-perceptual analysis and the self-perception of individuals 8 . In clinical evaluation, the auditory-perceptual analysis is a basic tool to characterize the voice of na individual 9,10 and it serves as a support element to therapeutic monitoring 11 . There is a high frequency of individuals with deviating voices identified from the auditory-perceptual assessment, which varies in terms of intensity since a slight dysphonia to severe cases 12 .…”