Self-perception of surface hydration effect on teachers' voice quality: an intervention study
Autopercepção do efeito da hidratação direta na qualidade vocal de professores: um estudo de intervenção
Emile Rocha Santana; Tânia Maria de Araújo; Maria Lúcia Vaz Masson
Abstract
Objective: to assess the effects of surface hydration on vocal quality according to teachers' self-perception.
Methods: an examiner-blinded pre-test and post-test intervention study carried out with a single group of 27 teachers. Sociodemographic characteristics and work questionnaire, Screening Index for Voice Disorder, Vocal Severity Rating Scale, Expected Effects Pre-intervention, Perceived Effects Post-intervention and Post-intervention Perception instruments, were applied. The intervention lasted 4 weeks and consisted of 5 minutes of nebulization with saline solution (sodium chloride 0.9%), after 10 minutes of mouth dehydration, prior to teaching.
Results: screening Index for Voice Disorder scores demonstrated a statistically significant reduction (p=0.001). Frequency of voice disorders in the Vocal Severity Rating Scale was reduced without a statistical significance (p= 0.172). Expected Effects, Pre-intervention, and Perceived Effects, Post-intervention, showed improvement in vocal quality (40.7%), vocal comfort (40.7%) and vocal folds hydration (37%). Post-intervention perception form showed moderate improvement of the symptoms (59.3%), cleared voice (55.6%) and ease speaking (48.1%) as well as intense belief in the intervention (74.1%) and intense compliance to the intervention (74.1%).
Conclusion: surface hydration with saline solution promoted self-perceived improvement in vocal quality.
Keywords
Resumo
Objetivo: avaliar os efeitos da hidratação da superfície na qualidade vocal, segundo a autopercepção dos professores.
Métodos: estudo de intervenção pré-teste e pós-teste, cego ao examinador, com grupo único de 27 professores. Foram avaliadas características sociodemográficas e do trabalho, por meio de questionário estruturado, e aplicados os instrumentos Índice de Triagem para Distúrbio de Voz, Escala de Classificação da Severidade Vocal, Efeitos Esperados Pré-intervenção, Efeitos Percebidos Pós-intervenção e Percepção Pós-Intervenção. A intervenção durou quatro semanas e consistiu em cinco minutos de nebulização com soro fisiológico (cloreto de sódio a 0,9%), após 10 minutos de desidratação, antes de lecionar.
Resultados: Índice de Triagem para Distúrbio de Voz demonstrou redução estatisticamente significativa (p = 0,001). A frequência de distúrbios da voz no Escala de Classificação da Severidade Vocal foi reduzida sem significância estatística (p = 0,172). Efeitos Esperados Pré-intervenção e Efeitos Percebidos Pós-intervenção mostraram melhora na qualidade vocal (40,7%), conforto vocal (40,7%) e hidratação das pregas vocais (37%). Percepção Pós-intervenção demonstrou melhora moderada dos sintomas vocais (59,3%), voz mais clara (55,6%) e facilidade ao falar (48,1%), intensa credibilidade na intervenção (74,1%) e intensa adesão a intervenção (74,1%).
Conclusão: a hidratação de superfície com soro fisiológico, promoveu melhora autorreferida da qualidade vocal dos professores.
Palavras-chave
Referências
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Submetido em:
09/06/2018
Aceito em:
09/10/2018
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