Assessment of the elasticity value using a soft tissue stiffness meter

Akira Takanashi, Kyohei Kawada, Kotomi Shiota, Munenori Katou, Ryo Konuma, Yoshiharu Nogita, Tadamitsu Matuda, Shigeki Miyajima, Kazuo Kurosawa

Research output: Contribution to journalArticle

Abstract

[Purpose] The purpose of this study was to investigate a method for assessing elasticity values by analyzing the relationship between muscle contraction strength and the hardness of soft tissue (STS) at different joint angles. [Subjects] The subjects were 20 healthy young men. [Method] To determine the relationship between degree of muscle contraction and STS, we measured STS of the quadriceps femoris (QF) at 0, 25, 50, 75 and 100% of maximum contraction with the knee flexed at 90° using a STS meter and isometric muscle strength measuring equipment. For the relationship between joint angle and STS, we measured STS from 0 ° of knee extension to maximum flexion in the supine position using a STS meter and an electronic goniometer. STS was measured in the center of the QF with the thigh and lower leg held by a sling in the lateral position at a load of 10 N. The analysis of differences in STS at different joint angles and muscle contraction strengths was performed using multiple comparisons and repeated measures one-way analysis of variance. [Results] Significant decreases in elasticity value were found between all values of muscle contraction and at angles of flexion greater than 90 °. [Conclusion] We consider that measurements of STS during muscle contraction are an index showing pressure changes in the muscle, and measurements of STS at different joint angles are an index of extensibility.

Original languageEnglish
Pages (from-to)667-671
Number of pages5
JournalRigakuryoho Kagaku
Volume26
Issue number5
Publication statusPublished - 2011

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Keywords

  • Muscle contraction
  • Muscle stretching
  • Soft tissue stiffness

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Takanashi, A., Kawada, K., Shiota, K., Katou, M., Konuma, R., Nogita, Y., Matuda, T., Miyajima, S., & Kurosawa, K. (2011). Assessment of the elasticity value using a soft tissue stiffness meter. Rigakuryoho Kagaku, 26(5), 667-671.