Article  |   April 2010
Tongue Pressure Modulation During Swallowing: Water Versus Nectar-Thick Liquids
Author Affiliations & Notes
  • Catriona M. Steele
    Toronto Rehabilitation Institute, Toronto, Ontario, Canada; University of Toronto and Bloorview Kids Rehab, Toronto
  • Gemma L. Bailey
    Toronto Rehabilitation Institute
  • Sonja M. Molfenter
    Toronto Rehabilitation Institute
  • Contact author: Catriona M. Steele, Toronto Rehabilitation Institute, 550 University Avenue, #12030, Toronto, ON M5G 2A2, Canada. E-mail: steele.catriona@torontorehab.on.ca.
Article Information
Swallowing, Dysphagia & Feeding Disorders / Speech
Article   |   April 2010
Tongue Pressure Modulation During Swallowing: Water Versus Nectar-Thick Liquids
Journal of Speech, Language, and Hearing Research, April 2010, Vol. 53, 273-283. doi:10.1044/1092-4388(2009/09-0076)
History: Received April 23, 2009 , Accepted August 19, 2009
Journal of Speech, Language, and Hearing Research, April 2010, Vol. 53, 273-283. doi:10.1044/1092-4388(2009/09-0076)
History: Received April 23, 2009; Accepted August 19, 2009
Web of Science® Times Cited: 16

Purpose: Evidence of tongue-palate pressure modulation during swallowing between thin and nectar-thick liquids stimuli has been equivocal. This mirrors a lack of clear evidence in the literature of tongue and hyoid movement modulation between nectar-thick and thin liquid swallows. In the current investigation, the authors sought to confirm whether tongue-palate pressures are modulated between discrete swallows of water and nectar-thick juice.

Method: Tongue-palate pressures were measured at 3 sites (anterior, medial, and posterior palate) using an adhered 3-bulb pressure strip in 20 healthy, young adults during discrete swallows of water and nectar-thick apple juice.

Results: Pressure modulation was not noted with respect to pressure amplitudes (in mm Hg), but was identified both in the pressure patterns observed (the sites and number of bulbs activated) and temporal aspects of pressure duration.

Conclusion: Tongue-palate pressure amplitude modulation does not occur for nectar-thick swallows compared to thin liquid swallows. Modulation does, however, occur with respect to the tongue-palate contact surface area and pressure durations. The authors introduce the concept of pressure slope as a meaningful way to examine tongue-palate pressure application in swallowing.

Acknowledgments
Funding for this study was provided through operating and career award grants from the Canadian Institutes of Health Research (Grants 69521, 82668, 84534, and 83888). Additional funding support was provided by the Toronto Rehabilitation Institute and an Ontario Ministry of Research and Innovation Early Researcher Award to the first author. The authors acknowledge the support of Toronto Rehabilitation Institute, which receives funding under the Provincial Rehabilitation Research Program from the Ministry of Health and Long-Term Care in Ontario. The views expressed do not necessarily reflect those of the ministry. The authors gratefully acknowledge assistance provided by Nicole Buesselberg, Becky Cliffe, Melanie Moore, Erin Yeates, and Ashley Waito during data collection and processing.
Order a Subscription
Pay Per View
Entire Journal of Speech, Language, and Hearing Research content & archive
24-hour access
This Article
24-hour access