Quantitative Contributions of the Muscles of the Tongue, Floor-of-Mouth, Jaw, and Velum to Tongue-to-Palate Pressure Generation Purpose The purpose of this investigation was to evaluate the relationship between tongue-to-palate pressure and the electromyography (EMG) measured from the mylohyoid, anterior belly of the digastric, geniohyoid, medial pterygoid, velum, genioglossus, and intrinsic tongue muscles. Methods Seven healthy adults performed tongue-to-palate pressure tasks at known percentages of ... Research Article
Research Article  |   August 01, 2008
Quantitative Contributions of the Muscles of the Tongue, Floor-of-Mouth, Jaw, and Velum to Tongue-to-Palate Pressure Generation
 
Author Affiliations & Notes
  • Phyllis M. Palmer
    University of New Mexico, Albuquerque
  • Debra M. Jaffe
    Hollywood, FL
  • Timothy M. McCulloch
    Harborview Medical Center, Seattle, WA
  • Eileen M. Finnegan
    University of Iowa, Iowa City, IA
  • Douglas J. Van Daele
    University of Iowa Hospitals and Clinics
  • Erich S. Luschei
    University of Iowa
  • Contact author: Phyllis M. Palmer, University of New Mexico, 1 University of New Mexico, MSC01 1195, Albuquerque, NM 87131. E-mail: ppalmer@unm.edu.
Article Information
Swallowing, Dysphagia & Feeding Disorders / Speech / Research Articles
Research Article   |   August 01, 2008
Quantitative Contributions of the Muscles of the Tongue, Floor-of-Mouth, Jaw, and Velum to Tongue-to-Palate Pressure Generation
Journal of Speech, Language, and Hearing Research, August 2008, Vol. 51, 828-835. doi:10.1044/1092-4388(2008/060)
History: Received November 1, 2006 , Accepted September 28, 2007
 
Journal of Speech, Language, and Hearing Research, August 2008, Vol. 51, 828-835. doi:10.1044/1092-4388(2008/060)
History: Received November 1, 2006; Accepted September 28, 2007

Purpose The purpose of this investigation was to evaluate the relationship between tongue-to-palate pressure and the electromyography (EMG) measured from the mylohyoid, anterior belly of the digastric, geniohyoid, medial pterygoid, velum, genioglossus, and intrinsic tongue muscles.

Methods Seven healthy adults performed tongue-to-palate pressure tasks at known percentages of their maximum pressure while intramuscular EMG was recorded from the muscles stated above. Multiple regression analysis was performed.

Results Predictors of pressure included the posterior fibers of the genioglossus, mylohyoid, anterior belly of digastric, medial pterygoid, and intrinsic tongue.

Conclusions Increasing tongue-to-palate pressure coincides with increased muscle activity. Activation of the floor-of-mouth, tongue, and jaw closing muscles increased tongue-to-palate pressure. These findings support the use of a tongue-press exercise to strengthen floor-of-mouth muscles, tongue, and jaw-closing muscles.

Acknowledgments
This research was supported by Grant P60-DC00976 from the National Institute on Deafness and Other Communication Disorders and Grant DC 00040 from the National Institutes of Health Research Training Program for Otolaryngology.
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