The Effect of a Voice Therapy Program Based on the Taxonomy of Vocal Therapy in Women with Behavioral Dysphonia.

Author

Kelly Cristina Alves Silverio

Affiliation

Speech Hearing and Language Disorders Department of the Bauru School of Dentistry, University of São Paulo-FOB/USP, Bauru, São Paulo, Brazil. Electronic address: [Email]

Abstract

OBJECTIVE : This study aims to propose and analyze the effect of a voice therapy program (VTP) in women with behavioral dysphonia.
METHODS : This is a controlled, blinded, and nonrandomized cohort study. Participants of this study were 22 women with behavioral dysphonia divided into two groups: G1, 11 women with behavioral dysphonia who received the VTP, and G2, 11 women with behavioral dysphonia who did not receive any intervention. Before and after 6 weeks, the outcome variables evaluated in both groups were auditory-perceptual evaluation of the global degree of vocal quality (vowel /a/ and counting), instrumental acoustic parameters, Voice-Related Quality of Life, vocal and larynx symptoms, and musculoskeletal pain. The statistical analysis used the Wilcoxon, chi-square, and Mann-Whitney tests (P < 0.05).
RESULTS : After 6 weeks, we observed a significantly higher improvement in the general degree of vocal deviation in vowels, a reduced F0 and symptom of "fatigue while talking" in G1, and an increased "shoulder" pain intensity in G2. Both groups showed improvement in the socioemotional domain of Voice-Related Quality of Life. In addition, the comparison between the groups showed a significantly greater reduction in fundamental frequency and the "voice loss" symptom in G1 compared with G2.
CONCLUSIONS : The VTP using semioccluded vocal tract exercises obtained a positive effect on voice quality, symptoms, and musculoskeletal pain in women with behavioral dysphonia. The proposal, based on the taxonomy of voice therapy, seems to have promoted a phonatory balance, muscle relaxation, and improvement in the vocal resistance of this population.

Keywords

Behavioral dysphonia,Voice,Voice disorders,Voice therapy,Voice training,