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Vibrational Therapies for Vocal Fatigue.
Edwin M L Yiu1, Christine C Y Liu1, Candy Y P Chan1
1Division of Speech & Hearing Sciences, Voice Research Laboratory, The University of Hong Kong, Pokfulam, Hong Kong.
Journal of Voice : Official Journal of the Voice Foundation
|August 7, 2019
Summary
Vibrational therapy, including whole-body vibration (WBV) and localized perilaryngeal vibration (LPV), effectively relieves vocal fatigue in singers. These methods significantly improve vocal function and reduce fatigue compared to voice rest alone.
Area of Science:
- Vocal function and fatigue research.
- Therapeutic applications of vibration.
- Auditory and speech science.
Background:
- Vibration is recognized for muscle tension relief.
- Previous studies support vibration for muscle relaxation.
- Direct and whole-body vibration methods exist.
Purpose of the Study:
- To investigate the effects of whole-body vibration (WBV) and localized perilaryngeal vibration (LPV) on phonatory functions.
- To assess the impact of these vibration techniques on vocal fatigue in non-dysphonic individuals.
Main Methods:
- Forty-four participants with normal voices were randomly assigned to WBV, LPV, or control groups.
- Participants engaged in 95 minutes of karaoke singing, followed by a 10-minute intervention (WBV, LPV, or sham).
- Highest pitch and vocal fatigue scores were measured pre-singing, post-singing, and post-intervention.
Main Results:
- Singing significantly reduced vocal function (highest pitch, fatigue score) across all groups.
- Both WBV and LPV groups demonstrated significant recovery in highest pitch production and reduced vocal fatigue perception compared to the control group.
- Statistical significance was observed at P < 0.002 for the vibrational intervention effects.
Conclusions:
- Vibrational therapy, including LPV and WBV, is more effective than voice rest for alleviating vocal fatigue.
- Localized and whole-body vibration methods are recommended for treating vocal fatigue.
- Vibration offers a promising therapeutic approach for voice users experiencing fatigue.
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