Pressure profile similarities between tongue resistance training tasks and liquid swallows

J Rehabil Res Dev. 2010;47(7):651-60. doi: 10.1682/jrrd.2009.05.0068.

Abstract

Tongue-pressure resistance training is known to increase tongue strength in seniors and individuals with stroke-related dysphagia. However, evidence of associated functional improvements in swallowing is equivocal. We investigated similarities in pressure waveform profiles between swallowing and several tongue-palate pressure tasks to identify tasks that may be best suited for inclusion in tongue-pressure resistance training protocols for patients who are unable to safely perform real bolus swallows in treatment. Tongue-palate pressures were recorded in 20 healthy young adults. Participants performed water and nectar-thick juice swallows, effortful and noneffortful saliva swallows, and "half-maximum" tongue-palate partial-pressure tasks emphasizing either anterior or posterior tongue-palate contact at different speeds. Pressure slopes (amplitude change over time) during the pressure application (rise) and withdrawal (release) phases were analyzed. A subset of four tasks with the greatest similarity in slope characteristics to those seen in bolus swallows was identified: anterior-emphasis half-maximum tongue-palate presses, posterior-emphasis maximum isometric tongue-palate presses, posterior-emphasis half-maximum slow tongue-palate presses, and effortful saliva swallows. We propose that future research should explore the degree to which swallowing improvements are obtained from treatment protocols that emphasize these tasks.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Deglutition / physiology*
  • Drinking Behavior*
  • Female
  • Humans
  • Male
  • Pressure*
  • Resistance Training
  • Tongue / physiology*
  • Viscosity
  • Water

Substances

  • Water