immediate effects of phonation into the tube protocol on the dysphonia severity index (dsi) and perceptual self-evaluation in future speech-language pathologists

Objectives: the aim of this study was to investigate the immediate effects of the protocol of phonation into tube on dsi as an objective multi-parametric approach for measuring voice quality and perceptual self-evaluation in senior students participating in clinical training to become speech language pathologists (slps). methods: eleven future slps (7 females and 4 males) with an average age of 22.5 ± 1 performed the protocol of phonation into tube. the immediate effects of phonation into tube exercise program were evaluated by dysphonia severity index (dsi) and self-evaluation of perceived phonatory comfort. results: after phonation in the tube exercise program, dsi and all its parameters significantly improved. results of the paired t-test showed that mpt (p = 0.02), f-high (p = 0.001), i-low (p < 0.001), jitter (p < 0.001), and dsi (p < 0.001) before and after phonation in the tube program significantly changed, respectively. self-evaluation after phonation in tube exercise program showed that most participants, i.e. 7 individuals (64%), reported improved phonatory comfort. conclusions: the results of this study suggest that phonation in tube exercise program may lead to an improvement of vocal quality and voice fatigue in future slps.