Authors: Penha PBDC, Lima Filho LMA, Ferreira LP, Almeida AAFD, Lopes LW, Lima Silva MFBD
Title: Effectiveness of a Blended-Learning Intervention in Teachers’ Vocal Health
Source: Journal Of Voice 2023 37(4): 635.e1-635.e13
Year: 2023
Research Design: Non Randomised Controlled Trial
Rating Score: N/A
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OBJECTIVE: To verify the effectiveness of a blended-learning voice assistance program for elementary school teachers. STUDY DESIGN: Nonrandomized and comparative interventional clinical trial. METHODS: A total of 59 teachers participated; 33 of the 59 teachers participated in face-to-face learning (control group-CG), and 26 of the 59 teachers participated in blended learning (experimental group-EG). The Voice Assistance Program included the following for both groups: preintervention assessment, four voice workshops and postintervention assessment. The instruments used were the Vocal Production Condition - Teacher (VPC-T) questionnaire, the Screening Index for Voice Disorder (SIVD), the Vocal Health and Hygiene Questionnaire (VHHQ) and the Voice-Related Quality of Life (V-RQOL) measure. Additionally, voice samples were collected for auditory-perceptual analysis of voice quality. The workshops included theoretical and practical content for both groups. All the workshops for the CG were conducted face-to-face, while the workshops for the EG consisted of two online workshops and two face-to-face workshops. A descriptive analysis of the data was performed, and paired Wilcoxon and Mann-Whitney tests were performed using R software, with a significance level of 0.05. RESULTS: Both groups showed improved acquisition of knowledge regarding vocal health and improved voice quality, but the improvement was greater for the EG. There was a significant decrease in the risk of voice disorder in the EG. Only the CG showed significant improvement in voice-related quality of life. CONCLUSION: The voice assistance program with blended learning is effective for increasing knowledge about vocal health, reducing the risk of voice disorder and improving the voice quality of teachers.

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