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Related Experiment Video

Updated: Jul 17, 2026

Ex Vivo Assessment of Contractility, Fatigability and Alternans in Isolated Skeletal Muscles

Ex Vivo Assessment of Contractility, Fatigability and Alternans in Isolated Skeletal Muscles

Published on: November 1, 2012

Does age play a role in mylohyoideus muscle function?

A Jégo¹, P Chassagne, I Landrin-Dutot

¹Service de Médecine Gériatrique and Digestive Tract Research Group, Hôpital Charles Nicolle, Rouen, France.

Neurogastroenterology and Motility

|February 13, 2001

Summary

Age does not significantly impact mylohyoideus muscle asynchronisms during swallowing in healthy adults. Most asynchronisms are brief and occur frequently, with no linear relationship to aging.

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Area of Science:

Gerontology
Physiology
Neurology

Background:

Swallowing disorders are common in the elderly population.
The mylohyoideus muscle plays a crucial role in the initial phase of swallowing.
Understanding age-related changes in muscle function is vital for geriatric health.

Purpose of the Study:

To investigate the relationship between aging and mylohyoideus muscle contraction during swallowing.
To determine if age affects the frequency and duration of mylohyoideus muscle asynchronisms.

Main Methods:

A prospective study involving 120 healthy subjects across four age groups.
Electromyographic (EMG) recording of mylohyoideus muscle activity during swallowing.
Comparison of asynchronism frequency and duration among age cohorts.

Main Results:

Mylohyoideus muscle asynchronisms were observed in 98% of subjects, predominantly short-lasting (<0.1s).
No significant differences were found in the mean number, duration, or frequency of long-lasting asynchronisms across age groups.
A linear relationship between asynchronism duration and aging was not identified in healthy elderly individuals.

Conclusions:

Aging does not appear to linearly affect the duration or frequency of mylohyoideus muscle asynchronisms in healthy individuals.
The presence of one or more long-lasting asynchronisms or at least six asynchronisms in 10 swallows may indicate an abnormality.