Performance of the phonatory deviation diagram in monitoring voice quality before and after voice exercise in individuals with Parkinson's Disease

ABSTRACT Purpose To assess the performance of phonatory deviation diagram and its measurements in monitoring voice quality before after exercise individuals with Parkinson's Disease. Methods Retrospective documentary study. A sample 30 subjects was used, 50% male, a mean age 62.13 ± 9.05 years. The results were analyzed, moments vocal pushing technique associated plosive sounds, considering area, density, shape location quadrants. For comparison purposes, acoustic parameters jitter, shimmer, glottal to noise excitation ratio auditory-perceptual analysis, carried out previous research, also considered, pre- post-technical moments. Results Despite fact that there no difference distribution samples diagram, performing technique, change displacement towards area normality identified visual qualitative an association between general degree analysis auditory perception diagram. There improvement shimmer values technique. Conclusion corroborated relation dysphonia, evaluated by results, Thus, shows good Parkinson’s.