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This study aims to observe the physiological effects of two different Semi-occluded vocal tract (SOVT) exercises in the larynx and pharynx when they are executed by individuals with constant vocal effort and without vocal pathology.
SOVT is a voice education or rehabilitation method that involves different postures which partially occlude or elongate the vocal tract. It causes a change in the vibration pattern of the vocal folds. SOVT postures have been postulated to produce changes in contact quotient (CQ), measured with electroglottograph (EGG), as well as in stroboscopy parameters. Despite all the research, some results remain inconclusive. This study aims to observe the physiological effects of two different SOVT exercises in larynx and pharynx when they are executed by people with constant vocal effort and without vocal pathology. In order to do so, stroboscopy and EGG will be performed before and while 24 volunteers execute two SOVT exercises (tongue trill and resonance tubes). The following parameters will be captured: CQ, symmetry, amplitude, periodicity, mucosal wave, closure, vertical laryngeal position, anterior-to-posterior compression and pharyngeal width. An analysis of covariance will be used to observe the effect of the SOVT exercises.
Resonance tube, Tongue trill
Universidad Nacional de Colombia
Not yet recruiting
Universidad Nacional de Colombia
Published on BioPortfolio: 2019-07-10T17:40:34-0400
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Pathological processes that affect voice production, usually involving VOCAL CORDS and the LARYNGEAL MUCOSA. Voice disorders can be caused by organic (anatomical), or functional (emotional or psychological) factors leading to DYSPHONIA; APHONIA; and defects in VOICE QUALITY, loudness, and pitch.
The sounds produced by humans by the passage of air through the LARYNX and over the VOCAL CORDS, and then modified by the resonance organs, the NASOPHARYNX, and the MOUTH.
That component of SPEECH which gives the primary distinction to a given speaker's VOICE when pitch and loudness are excluded. It involves both phonatory and resonatory characteristics. Some of the descriptions of voice quality are harshness, breathiness and nasality.
A tubular organ of VOICE production. It is located in the anterior neck, superior to the TRACHEA and inferior to the tongue and HYOID BONE.
Measurement of parameters of the speech product such as vocal tone, loudness, pitch, voice quality, articulation, resonance, phonation, phonetic structure and prosody.