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How Stressful Is "Deep Bubbling"?
Jaana Tyrmi1, Anne-Maria Laukkanen2
1Speech and Voice Research Laboratory, University of Tampere, Tampere, Finland..
Summary
Deep bubbling, a voice therapy technique, may increase vocal fold loading. This study found it stressful for respiratory and lip muscles but not significantly different for voice trained individuals.
Area of Science:
- Laryngology
- Speech-Language Pathology
- Voice Science
Background:
- Water resistance therapy, including deep submersion (deep bubbling), is used for dysphonia and hypofunctional voice disorders.
- Caution is advised to prevent vocal overloading during deep bubbling therapy.
Purpose of the Study:
- To investigate the strenuousness of deep bubbling (phonating into water at ≥10 cm depth).
- To compare physiological voice parameters during deep bubbling versus other phonation tasks.
Main Methods:
- Fourteen subjects (half voice-trained) performed syllable and vowel phonation tasks.
- Measured oral pressure, contact quotient (CQ), and sound pressure level during phonation into a water-immersed tube.
- Estimated subglottic and transglottic pressures and collected subjective sensations via interview.
Main Results:
- Deep bubbling showed higher subglottic and oral pressures and lower transglottic pressure compared to loud syllable phonation.
- Contact quotient did not significantly differ between deep bubbling and loud/strained phonation.
- Subjects reported stress primarily in respiratory and lip muscles; no major differences were found between trained and untrained subjects.
Conclusions:
- Contact quotient suggests potential for increased vocal fold loading during deep bubbling.
- Further research is needed to examine impact stress during water resistance voice exercises.
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