The effect of jaw position on measures of tongue strength and endurance

Nancy Pearl Solomon, Benjamin Munson

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Assessment of tongue strength and endurance is common in research and clinical contexts. It is unclear whether the results reveal discrete function by the tongue or combined abilities of the tongue and jaw. One way to isolate the movement of the tongue is to constrain the jaw kinematically by using a bite block. In this study, 10 neurologically normal young adults performed tongue strength and endurance tasks without a bite block ("jaw-free") and with bite blocks of various heights (2, 5, 10, and 15 mm for strength; 5 mm for endurance). Data signals included tongue pressure exerted on an air-filled bulb, surface electromyography (SEMG) from the superior tongue blade, and SEMG from 1 masseter. On average, tongue strength (pressure in kPa) was greatest with no bite block and generally decreased as bite blocks increased in height. Pairwise analyses revealed statistically significant differences for all but 3 comparisons (jaw-free to 2 mm, 2 to 5 mm, and 5 to 10 mm). After removing outlying data from 1 participant, tongue endurance at 50% of tongue strength was significantly greater without a bite block than with one. SEMG data did not differ significantly for the strength task across bite block conditions, but inspection of the individual data revealed a tendency for masseter activity to be lower when the jaw was unconstrained. These results suggest that maximal tongue strength and endurance are best assessed with an unconstrained mandible or with a very small bite block.

Original languageEnglish (US)
Pages (from-to)584-594
Number of pages11
JournalJournal of Speech, Language, and Hearing Research
Volume47
Issue number3
DOIs
StatePublished - Jun 2004

Bibliographical note

Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.

Keywords

  • Assessment
  • Bite block
  • Maximum performance tasks
  • Surface electromyography
  • Tongue function

Fingerprint Dive into the research topics of 'The effect of jaw position on measures of tongue strength and endurance'. Together they form a unique fingerprint.

Cite this