A Systematic Review of Isometric Lingual Strength-Training Programs in Adults With and Without Dysphagia Purpose This systematic review summarizes the effects of isometric lingual strength training on lingual strength and swallow function in adult populations. Furthermore, it evaluates the designs of the reviewed studies and identifies areas of future research in isometric lingual strength training for dysphagia remediation. Method A comprehensive literature ... Review Article
Review Article  |   May 17, 2017
A Systematic Review of Isometric Lingual Strength-Training Programs in Adults With and Without Dysphagia
 
Author Affiliations & Notes
  • Victoria S. McKenna
    Department of Communication Sciences and Disorders, University of Cincinnati, OH
  • Bin Zhang
    Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, OH
  • Morgan B. Haines
    Department of Communication Sciences and Disorders, University of Cincinnati, OH
  • Lisa N. Kelchner
    Department of Communication Sciences and Disorders, University of Cincinnati, OH
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication. ×
  • Correspondence to Victoria McKenna: mckennvs@mail.uc.edu
  • Editor: Krista Wilkinson
    Editor: Krista Wilkinson×
  • Associate Editor: Katherine Verdolini Abbott
    Associate Editor: Katherine Verdolini Abbott×
Article Information
Swallowing, Dysphagia & Feeding Disorders / Special Populations / Review Articles
Review Article   |   May 17, 2017
A Systematic Review of Isometric Lingual Strength-Training Programs in Adults With and Without Dysphagia
American Journal of Speech-Language Pathology, May 2017, Vol. 26, 524-539. doi:10.1044/2016_AJSLP-15-0051
History: Received May 6, 2015 , Revised October 15, 2015 , Accepted September 22, 2016
 
American Journal of Speech-Language Pathology, May 2017, Vol. 26, 524-539. doi:10.1044/2016_AJSLP-15-0051
History: Received May 6, 2015; Revised October 15, 2015; Accepted September 22, 2016

Purpose This systematic review summarizes the effects of isometric lingual strength training on lingual strength and swallow function in adult populations. Furthermore, it evaluates the designs of the reviewed studies and identifies areas of future research in isometric lingual strength training for dysphagia remediation.

Method A comprehensive literature search of 3 databases and additional backward citation search identified 10 studies for inclusion in the review. The review reports and discusses the isometric-exercise intervention protocols, pre- and postintervention lingual-pressure data (maximum peak pressures and lingual-palatal pressures during swallowing), and oropharyngeal swallowing measures such as penetration-aspiration scales, oropharyngeal residue and duration, lingual volumes, and quality-of-life assessments.

Results Studies reported gains in maximum peak lingual pressures following isometric lingual strength training for both healthy adults and select groups of individuals with dysphagia. However, due to the variability in study designs, it remains unclear whether strength gains generalize to swallow function.

Conclusion Although isometric lingual strength training is a promising intervention for oropharyngeal dysphagia, the current literature is too variable to confidently report specific therapeutic benefits. Future investigations should target homogenous patient populations and use randomized controlled trials to determine the efficacy of this treatment for individuals with dysphagia.

Acknowledgment
This project was supported by National Center for Advancing Translational Sciences Award UL1TR000077, awarded to The University of Cincinnati. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
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