Efficacy of Long-Term Intensive Straw Phonation Exercise in Air for Hyperfunctional Voice Disorders: A Preliminary Study.

Purpose: Literature highlights the efficacy of prolonged use of straw phonation for vocally healthy individuals. Nevertheless, minimal studies have examined the prolonged use of single treatment in hyperfunctional voice disorders (HFVD), as straw phonation is used as physiological training to improve voice quality in these individuals. The present study aimed to investigate the long-term intensive training effect of straw phonation exercise in air (SPEA) for HFVD.