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| Author(s): |
Raquel Aparecida Pizolato
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Piracicaba, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Odontologia de Piracicaba |
| Defense date: | 2012-08-08 |
| Examining board members: |
Antonio Carlos Pereira;
Mariana Sodário Cruz;
Maria Inês Beltrati Cornacchioni Rehder;
Marcelo de Castro Meneghim;
Eduardo Hebling
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| Advisor: | Antonio Carlos Pereira |
| Abstract | |
Professional voice users, specifically teachers, are at high risk for developing voice disorders. Therefore, educational programs for vocal health may help teachers take better care of their voice and consequently, to prevent dysphonia. The aim of this study was to develop an educational program with vocal training exercises and vocal hygiene, analyze the pre- and post-training effects of exercises and the effectiveness of the program after 3 months. One-hundred-and-two teachers from 11 public schools, randomly selected in the municipality of Piracicaba, State of São Paulo-Brazil, participated of this study. The sample was divided into a control group (52 women and 14 men) and experimental group (29 women and 7 men), mean age 42.55±7.84 years. The program offered to the control group was based on 2 educational lectures on vocal hygiene habits and the mechanism of voice production. For the experimental group, a lecture was presented on vocal hygiene habits and the mechanism of voice production, and 4 meetings about specific training exercises for the voice. This exercises comprised: Cervical posture and relaxation; respiration; phonation, intensity and frequency; resonance and articulation. The subjects of both groups answered two questionnaires: one about signs and symptoms of vocal problems, habits that are good and bad for the voice and organization of work, , and another about the Voice-Related Quality of Life (V-RQOL). A collection of vowel [i] emission in habitual tone of speech was made at the beginning of the program and after 3 months of completion. In each exercise session in the experimental group, vowel [i] emission was collected in the pre- and post-training situation. Three months after conclusion of the educational program, 73 subjects of both groups participated in re-evaluation of voice quality and 70 responded the questionnaire (V-RQOL). The paired Student's test was used to compare the repeated measures within the same group and Proc Mixed (repeated measures) were used to compare the effect of the interaction of treatment in the groups over time. For the analyses the level of significance (p<0.05) was considered. The Chi-square and Exact Fisher test were used to test the association of independent variables of the general questionnaire, considering the dependent variables Fundamental Frequency and Mean Vocal Intensity. The results showed that the cervical posture and relaxation exercises provided a mean reduction in fundamental frequency in men, and the phonation, intensity and frequency provided an increase in the mean value of fundamental frequency in women after training. There was no statistically significant difference between the groups for the variables acoustic analysis of the voice, when the initial and final evaluation after 3 months of the educational program were compared. In the initial and final evaluations of the scores (physical, psycho-emotional and total) of the V-RQOL there were statistically significant differences in all the scores, for both the control and experimental groups, and there was no difference in the inter-group analysis. It could be concluded that the educational program had beneficial effects for the teachers, reflected in improved quality of life (AU) | |
| FAPESP's process: | 09/01507-6 - Voice health program for fundamental school teacher: evaluation, self-perception and educative action of voice |
| Grantee: | Raquel Aparecida Pizolato |
| Support Opportunities: | Scholarships in Brazil - Doctorate |