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Korean J Sports Med. 2015 Dec;33(2):143-146. Korean.
Published online December 07, 2015.  https://doi.org/10.5763/kjsm.2015.33.2.143
Copyright © 2015 The Korean Society of Sports Medicine
Evaluation and Application of Muscle Injuries Using Tensiomyography
Sang Won Bae,1,* Jung Hoon Chai,2,* Bo Kyeong Kim,3 Chul Hyun Kim,2 and Chan Kim4
1Daejeon Teun Teun Hospital, Daejeon, Korea.
2Department of Sports Medicine, Soonchunyang University, Asan, Korea.
3Department of Social Physical Education, Korea Unversity, Seoul, Korea.
4Department of Physiology and Biophysics, Eulji University School of Medicine, Daejeon, Korea.

Correspondence: Chan Kim. Department of Physiology and Biophysics, Eulji University School of Medicine, 77 Gyeryong-ro 771beon-gil, Jung-gu, Daejeon 34824, Korea. Tel: +82-42-259-1631, Email: ckim@eulji.ac.kr

*These authors contribute equally to this study.

Received November 13, 2015; Revised November 27, 2015; Accepted November 29, 2015.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


Abstract

Tensiomyography (TMG) is known as non-invasive method which assesses the muscular characteristics such as contraction velocity or maximal displacement of the belly. The aim of this study was to evaluate muscular responses by TMG after muscle injury and to introduce using TMG first in Korea. This study was performed with a subject who was diagnosed with muscular injury and consent measuring and following up TMG analyses. A female patient, who was diagnosed left hip adductor muscle strain, underwent magnetic resonance imaging (MRI) and TMG at intervals of two weeks. We obtained decreased in displace maximum (Dm, 4.14 vs. 5.69) and altered curve shape in the injured muscle at the initial TMG assessment in comparison to the non-injured side. After two weeks, MRI findings and symptom were improved and Dm in the injured side increased as in the non-injured muscle. These findings suggest that a decrease in Dm indicate increased in muscle stiffness after muscle injury, and an increase in Dm as in the non-injured side after two weeks indicate recovered status. TMG may be useful as a simple and non-invasive device for monitoring muscle function after muscle injury and during the recovery.

Keywords: Muscle injury; Tensiomyography; Muscle belly; Noninvasive

Figures


 Fig. 1
TMG parameters. Td: delay time, Tc: contraction time, Ts: sustain time, Tr: relaxation time, Dm: displace maximum, TMG: tensiomyography.
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Fig. 2
Magnetic resonance imaging follow up (diagnosis: left adductor strain) yellow arrow means injury area.
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Fig. 3
Tensiomyography results (injured and recovered). Lt: left, Dm: displace maximum.
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Fig. 4
Comparison of Dm (maximal displacement of the left hip adductor belly) between injured and non-injured during recovery.
Click for larger image

Tables


 Table 1
Patient information
Click for larger image

Notes

Conflict of Interest:No potential conflict of interest relevant to this article was reported.

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