Effect of Vocal Function Exercises on the Voice Handicap Index, Vocal Fatigue Index, and Number of Vocal Fatigue Symptoms in Bank Workers: Single-Blinded Randomized Controlled Trial.

Vocal fatigue (VF) is a significant portion of occupational voice disorders. Researchers have proposed numerous therapeutic approaches to alleviate VF. However, the efficacy of vocal function exercises (VFEs) as a safe, effective, and simple method is unclear.