An analysis of lingual contribution to submental surface electromyographic measures and pharyngeal pressure during effortful swallow.
OBJECTIVE
To evaluate the influence of tongue-to-palate pressures on submental muscle contraction and oral and pharyngeal pressure dynamics during effortful swallowing maneuver.


METHODS
Comparative analysis of 2 task strategies on biomechanic measures of swallowing.


METHODS
Research laboratory in a free-standing research facility.


METHODS
Consecutive volunteer sample of 20 healthy participants (age range, 20-35 y).


METHODS
Not applicable.


METHODS
Peak amplitude of submental surface electromyography and orolingual and pharyngeal manometric pressure at 4 locations.


RESULTS
General linear model analysis of variance revealed statistically significant greater amplitudes for the tongue emphasis condition of effortful swallow at all measured sensors (P<.004).


CONCLUSIONS
Tongue-to-palate emphasis during execution of effortful swallowing increases amplitudes of submental surface electromyography, orolingual pressure, and upper pharyngeal pressure to a greater degree than a strategy of inhibiting tongue-to-palate emphasis.
Huckabee
Maggie-Lee
ML
Department of Communication Disorders, University of Canterbury, Christchurch, New Zealand. maggie-lee.huckabee@canterbury.ac.nz
Steele
Catriona M
CM
D000328:Adult; D000704:Analysis of Variance; D001696:Biomechanical Phenomena; D003679:Deglutition / Q000502:physiology*; D004576:Electromyography; D005260:Female; D006801:Humans; D016014:Linear Models; D008365:Manometry; D010609:Pharyngeal Muscles / Q000502:physiology*; D010614:Pharynx / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology; D011312:Pressure; D014059:Tongue / Q000502:physiology*