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Surface Electromyographic Assessment of Swallowing Function.

Marziyeh Poorjavad1, Saeed Talebian2, Noureddin Nakhostin Ansari2

  • 1Department of Speech Therapy, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran.

Iranian Journal of Medical Sciences
|April 1, 2017
PubMed
Summary

Surface electromyography (sEMG) measures swallowing muscle activity. The median frequency (MDF) of muscle function is a reliable sEMG measure for assessing swallowing in both young and old adults.

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Speech-Language Pathology

Background:

  • Surface electromyography (sEMG) is crucial for evaluating swallowing function.
  • Assessing the reliability of sEMG variables is essential for clinical application in swallowing assessment and treatment.

Purpose of the Study:

  • To determine the reliability of sEMG measures for swallowing muscles in young and older adults.
  • To investigate how different swallowing conditions affect sEMG measure reliability.

Main Methods:

  • A cross-sectional study involving 24 older and 10 younger healthy adults.
  • Measured masseter, submental, and infrahyoid muscle activity using sEMG during three swallowing tasks.
  • Calculated relative and absolute reliability (ICC, SEM%, SRD%) for sEMG indices.
Keywords:
DeglutitionElectromyographyReproducibility of results

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Main Results:

  • Relative reliability showed significant agreement for mean/peak amplitude and median frequency (MDF) across most swallowing types and age groups.
  • Duration and time-to-peak measures demonstrated lower reliability, especially in certain conditions.
  • High SEM% and SRD% were observed for timing measures, indicating lower absolute reliability.

Conclusions:

  • The median frequency (MDF) of muscle activity is a reliable sEMG measure for swallowing function assessment in both age groups.
  • Reliability of sEMG measures is influenced by participant age and the specific swallowing task.
  • sEMG offers potential for swallowing assessment, with MDF showing particular promise.