ABSTRACT
This is a case study of three men aged 25, 39, and 40 years old, evaluated before and after ten consecutive phonation sessions into a glass tube immersed in water. The objective of this study was to describe the vocal results of intensive short-term therapy with phonation into a glass tube immerse in water in three men without laryngeal disorders and vocal complaints. In two subjects, most glottic source measurements improved, but without becoming normal. In all three subjects, most sound pressure measurements increased above normal; most of the maximum phonation times have increased, but without becoming normal; the difference between vowel average and number count remained outside the normal range; the results of s/z and ė/e ratios remained or entered the normal range. The results of the self-assessment questionnaires (Voice Activity and Participation Profile, Vocal Tract Discomfort Scale, and Talkativeness and Vocal Loudness Self-Assessment Scale) showed that the scores remained or little changed after therapy. All subjects showed pre-contemplation, first stage, on the URICA-Voice Scale. In the three men, after intensive short-term therapy with phonation into a glass tube immerse in water, there was a slight improvement in most vocal measures, but they still remained altered and, on the URICA-Voice scale, the group was classified as Pre-Contemplation.
Keywords:
Acoustics; Phonation; Speech therapy; Voice quality; Voice