Revista de Salud Pública
Print version ISSN 0124-0064
BARRRETO-MUNEVAR, Deisy P et al. Environmental factors and vocal habits regarding pre-school teachers and functionaries suffering voice disorders . Rev. salud pública [online]. 2011, vol.13, n.3, pp. 410-420. ISSN 0124-0064. http://dx.doi.org/10.1590/S0124-00642011000300004.
Objective Determining the relationship between vocal habits and environmental/ occupational conditions with the presence of vocal disturbance (dysphonia) in teachers and functionaries working at community-based, initial childhood education centres (kindergartens). Method This was a descriptive study which adopted across-sectional approach using 198 participants which was developed in three phases. Phase 1: consisted of identifying participants having the highest risk of presenting vocal disturbance. Phase 2consisted of observation-analysis concerning the voice use and vocal habits of participants who had been identified in phase 1. Phase 3consisted of perceptual and computational assessment of participants' voices using Wilson's vocal profile and the multidimensional voice program. Results Individuals having pitch breaks, throat clearing, increased voice intensity, and gastro-oesophageal reflux were found to present below standard fundamental frequency (FF). Subjects having altered breathing and increased voice intensity were identified as having above standard shimmer and jitter acoustic values. Conclusions A high rate of inability to work was found due to vocal disturbance. It is thus suggested that there is a correlation between vocal habits and vocal disorders presented by preschool teachers in kindergarten settings.
Keywords : Voice; voice disorder; occupational exposure.