Amaral Amanda Corrêa do, Zambon Fabiana, Moreti Felipe, Behlau Mara
Centro de Estudos da Voz, São Paulo, SP, Brasil.
Codas. 2017;29(2):e20160045. doi: 10.1590/2317-1782/20172016045. Epub 2017 Mar 27.
Purpose To evaluate the vocal tract discomfort (VTD) reported by teachers, comparing their vocal self-assessment at three different times: before teaching, after four hours of teaching, and after eight hours of teaching. Methods The study sample was composed of 50 teachers: 42 women and eight men. The participating teachers were divided into two groups according to the cutoff value of the Voice Symptom Scale (VoiSS): Vocal Risk Group (VRG) and Vocally Healthy Group (VHG). The List of Vocal Signs and Symptoms (LVSS) was used to identify the number of vocal symptoms in each group. The groups were evaluated at three specific moments (before (BT) and after four (4HT) and eight (8HT) hours of teaching) by means of the Vocal Tract Discomfort Scale (VTD scale) and vocal self-assessment. Results The VRG presented more vocal signs and symptoms of the LVSS than the VHG (total: VHG=0.56/VRG=1.60, p<0.001; work-related VHG=0.79/VRG=2.49, p<0.001). The VHG did not report change in discomfort for both frequency (p=1.132) and severity (p=0.431) and showed better vocal self-assessment (BT=0.67; 4HT=0.96; 8HT=0.96, p=0.007). However, the VRG presented vocal tract discomfort after four and eight hours of teaching for both frequency (BT=1.60; 4HT=2.49; 8HT=2.95, p<0.001) and severity (BT=1.79; 4HT=2.52; 8HT=3.12, p<0.001) and worse voice self-assessment (BT=2.00; 4HT=2.42; 8HT=3.00, p<0.001). Conclusion Teachers at vocal risk present worse vocal self-assessment and increased vocal tract discomfort throughout the teaching working day.
目的 评估教师报告的声道不适（VTD），比较他们在三个不同时间的嗓音自我评估：授课前、授课四小时后和授课八小时后。方法 研究样本由50名教师组成：42名女性和8名男性。参与研究的教师根据嗓音症状量表（VoiSS）的临界值分为两组：嗓音风险组（VRG）和嗓音健康组（VHG）。使用嗓音体征和症状清单（LVSS）来确定每组嗓音症状的数量。通过声道不适量表（VTD量表）和嗓音自我评估在三个特定时刻（授课前（BT）、授课四小时后（4HT）和授课八小时后（8HT））对两组进行评估。结果 VRG出现的LVSS嗓音体征和症状比VHG更多（总计：VHG = 0.56/VRG = 1.60，p < 0.001；与工作相关的VHG = 0.79/VRG = 2.49，p < 0.001）。VHG在频率（p = 1.132）和严重程度（p = 0.431）方面均未报告不适变化，且嗓音自我评估较好（BT = 0.67；4HT = 0.96；8HT = 0.96，p = 0.007）。然而，VRG在授课四小时和八小时后在频率（BT = 1.60；4HT = 2.49；8HT = 2.95，p < 0.001）和严重程度（BT = 1.79；4HT = 2.52；8HT = 3.12，p < 0.001）方面均出现声道不适，且嗓音自我评估更差（BT = 2.00；4HT = 2.42；8HT = 3.00，p < 0.001）。结论 嗓音有风险的教师在整个教学工作日中嗓音自我评估更差，声道不适增加。
