Lingual propulsive pressures across consistencies generated by the anteromedian and posteromedian tongue by healthy young adults
Anterior, Bolus propulsion, Lingual pressures, Posterior, Tongue
Journal of Speech, Language, and Hearing Research
Purpose: In the present study, the authors investigated lingual propulsive pressures generated in the normal swallow by the anterior and posterior lingual segments for various consistencies and maximum isometric tasks. Method: Lingual pressures for saliva, thin, and honey-thick liquid boluses were measured via the Iowa Oral Performance Instrument (IOPI Medical, Carnation, WA) at both anteromedian and posteromedian lingual segments of 62 healthy participants, ages 18-34 years (30 men, 32 women).Results: A repeated-measures analysis of variance revealed that all lingual swallowing pressures were significantly greater at the anteromedian segment than at the posteromedian segment. Gender was not a significant factor; however, women exhibited greater swallowing pressures across all conditions. Lingual pressures increased as bolus viscosity increased. No significant interactions existed. Analysis of a subset of 30 participants revealed that men exhibited greater maximal isometric pressure at the anteromedian segment than women, with no significant gender difference at the posteromedian segment. A significantly higher percentage of maximum isometric tongue pressure was exerted by the posteromedian tongue than by the anteromedian tongue. Conclusion: Findings suggest that greater amplitudes of lingual pressures are generated during normal swallowing at the anteromedian lingual segment; however, a greater percentage of maximum isometric tongue pressure was exerted by the posteromedian lingual segment, suggesting increased effort by the posterior tongue during bolus propulsion. © American Speech-Language-Hearing Association.
Original Publication Date
DOI of published version
Gingrich, Laura L.; Stierwalt, Julie A.G.; Hageman, Carlin F.; and LaPointe, Leonard L., "Lingual propulsive pressures across consistencies generated by the anteromedian and posteromedian tongue by healthy young adults" (2012). Faculty Publications. 1781.