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J Med Eng Technol. 2010 May;34(4):268-73. doi: 10.3109/03091901003646096.

Analysis of the pattern of suprahyoid muscle activity during pharyngeal swallowing of foods by healthy young subjects.

Author information

1
Department of Health and Nutrition, Niigata University of Health and Welfare, School of Health Sciences, 1398 Shimami-cho, Niigata 950-3198, Japan.

Abstract

We previously developed the T(P) technique to discriminate between the activity patterns of skeletal muscles. In this study we aim to identify the T(P) value(s) that can be used to sensitively evaluate the activity patterns of the suprahyoid (SH) muscles during swallowing. We also analyse the effect of food textural properties on the activity patterns of the SH muscle during oral and pharyngeal swallowing. Three test foods consisting of 3%, 6% and 9% of a thickening agent, Mousse-up (MU) were prepared. Their textural properties differed significantly. Swallowing of 9% MU involved a significantly longer average duration than 3% MU. The average T(50) value for 6% MU was significantly larger than that for 3% MU. However, the average T(20) and T(80) values of the test foods did not differ. Thus, the T(50) value is particularly suitable for evaluating SH muscle swallowing patterns. Moreover, test foods that vary in their textural properties elicit different durations and patterns of SH muscle activity.

PMID:
20397849
PMCID:
PMC2942872
DOI:
10.3109/03091901003646096
[Indexed for MEDLINE]
Free PMC Article

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