|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5124459||1378443||2017||6 صفحه PDF||ندارد||دانلود کنید|
SummaryObjectivesWater resistance therapy by phonating through a tube into the water is used to treat dysphonia. Deep submersion (â¥10âcm in water, âdeep bubblingâ) is used for hypofunctional voice disorders. Using it with caution is recommended to avoid vocal overloading. This experimental study aimed to investigate how strenuous âdeep bubblingâ is.Study DesignFourteen subjects, half of them with voice training, repeated the syllable [pa:] in comfortable speaking pitch and loudness, loudly, and in strained voice. Thereafter, they phonated a vowel-like sound both in comfortable loudness and loudly into a glass resonance tube immersed 10âcm into the water.MethodsOral pressure, contact quotient (CQ, calculated from electroglottographic signal), and sound pressure level were studied. The peak oral pressure P(oral) during [p] and shuttering of the outer end of the tube was measured to estimate the subglottic pressure P(sub) and the mean P(oral) during vowel portions to enable calculation of transglottic pressure P(trans). Sensations during phonation were reported with an open-ended interview.ResultsP(sub) and P(oral) were higher in âdeep bubblingâ and P(trans) lower than in loud syllable phonation, but the CQ did not differ significantly. Similar results were obtained for the comparison between loud âdeep bubblingâ and strained phonation, although P(sub) did not differ significantly. Most of the subjects reported âdeep bubblingâ to be stressful only for respiratory and lip muscles. No big differences were found between trained and untrained subjects.ConclusionsThe CQ values suggest that âdeep bubblingâ may increase vocal fold loading. Further studies should address impact stress during water resistance exercises.
Journal: Journal of Voice - Volume 31, Issue 2, March 2017, Pages 262.e1-262.e6