کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5124259 | 1378441 | 2017 | 7 صفحه PDF | دانلود رایگان |
SummaryPurposeThis study aimed to investigate the effects of surface hydration on teachers' voice quality.Study DesignThis is an examiner-blinded, pretest and posttest intervention study with a single group of subjects.MethodSubjects were 27 teachers from a public-sector state school in Salvador, Bahia, Brazil. Pre- and post-intervention voice recordings were obtained. Voice samples collected underwent computerized acoustic analysis (VoxMetria) and perceptual analysis via the Consensus Auditory-Perceptual Evaluation of Voice. Intervention was conducted daily before teaching for a 4-week period, consisting of 5 minutes of nebulization with saline solution (NaCl 0.9%), after 10 minutes of dehydration breathing through the mouth.ResultsA reduction in the overall level of voice alteration was observed in the Consensus Auditory-Perceptual Evaluation of Voice, but with no statistical significance. The following were observed: an increase in the mean fundamental frequency of the vowel /a:/ (Pâ=â0.036); a statistically significant reduction in the minimum intensity of connected speech (Pâ=â0.028), in the median intensity of connected speech (Pâ=â0.014), and in the maximum intensity of connected speech (Pâ=â0.007). There was also a statistically significant reduction in the minimum (Pâ=â0.001) and mean intensities of spontaneous speech (Pâ=â0.011).ConclusionSurface hydration with saline solution led to an improvement in teachers' voice quality.
Journal: Journal of Voice - Volume 31, Issue 3, May 2017, Pages 383.e5-383.e11