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Immediate effect of oral application of high frequency oscillation in dysphonic subjects

Grant number: 13/19063-2
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): January 01, 2014
Effective date (End): December 31, 2014
Field of knowledge:Health Sciences - Speech Therapy
Principal Investigator:Kelly Cristina Alves Silverio
Grantee:Thais Lenharo Gazeta
Host Institution: Faculdade de Odontologia de Bauru (FOB). Universidade de São Paulo (USP). Bauru , SP, Brazil


Objective: to evaluate the immediate effects oral oscillation generated by the high frequency unit Flutter ® device VRP1 in dysphonic individuals and to compare with normal and no vocal complaints individuals. Methodology: We will study 60 subjects of both sexes, aged 18-45 years old. After signature of the informed consent the individuals will be answer to questions about self-assessment of voice, vocal symptoms / laryngeal musculoskeletal pain; vocal register with vowel / a /, counting 1-20 and spontaneous speech for perceptual and acoustics analyses and phonatory measures. Then be divided into two groups: Group 1 - 30 dysphonic individuals who oral application of high-frequency oscillation (OOAF) generated by the device Flutter ® VRP1 performed for 3 minutes; Group 2 - 30 normal and no vocal complaints individuals at the same conditions that Group 1. After application of the technique, the same assessment procedures and vocals record initial will be repeat and will be the application of a self-assessment questionnaire to investigate the effect of these characteristics as the sensations in their voice, larynx, articulation and breathing. The vocal register before and after the application of OOAF will be randomized to perceptual analyses that will be performed by three expert judges speech voice experience, double-blind. The parameters to be analyzed are overall grade voice quality, roughness, breathiness, tension, instability, resonance and articulation. Will also be held acoustic analysis parameters: jitter, shimmer and noise measurements: noise-harmonic ratio. The data will be statistically analyzed using parametric tests in order to compare data before and after the application of OOAF and compare the groups.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SATERS, THAIS LENHARO; RIBEIRO, VANESSA VEIS; DONALONSO SIQUEIRA, LARISSA THAIS; MAROTTI, BEATRIZ DANTAS; BRASOLOTTO, ALCIONE GHEDINI; ALVES SILVERIO, KELLY CRISTINA. The Voiced Oral High-frequency Oscillation Technique's Immediate Effect on Individuals With Dysphonic and Normal Voices. JOURNAL OF VOICE, v. 32, n. 4, p. 449-458, . (13/19063-2)

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