Measurement of changes in muscle viscoelasticity during static stretching using stress-relaxation data

Kobayashi, Yo; Matsuyama, Daiki

Journal of the Mechanical Behavior of Biomedical Materials, 2025, 171, 107111

Number of Access:28（2025-12-05 23:44 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/102783

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Title
Measurement of changes in muscle viscoelasticity during static stretching using stress-relaxation data
Creator
NRID
1000050424817 1000050424817
ORCID
0000-0003-4358-6294 0000-0003-4358-6294
researchmap permalink
yokobayashi yokobayashi
Scopus Author ID
55516137200 55516137200
CreatorName
Kobayashi, Yo
CreatorName
Matsuyama, Daiki
Subject
Muscle
Static stretching
Stress relaxation
Viscoelasticity
Description
Kobayashi Y., Matsuyama D.. Measurement of changes in muscle viscoelasticity during static stretching using stress-relaxation data. Journal of the Mechanical Behavior of Biomedical Materials 171, 107111 (2025); https://doi.org/10.1016/j.jmbbm.2025.107111.
Abstract
This study investigates how muscle viscoelasticity changes during static stretching by measuring the state of the muscle during stretching using continuous time-series data. We used a device that applied a force to the muscle during stretching and measured the reaction force. The device was attached to each participant, and time-series data of the reaction force (stress-relaxation data) during stretching were obtained. The spring-pot model, which uses fractional calculus, was selected as the viscoelastic model for the muscle, to which the stress relaxation data were fitted on a straight line on a double-logarithmic plot. The stress-relaxation data formed a broken line comprising two segments on the double-logarithmic plot, showing that viscoelasticity changed abruptly at a particular time during static stretching. Considering two viscoelastic states, before and after the change, the stress-relaxation curve was fitted through segmented regression to the double-logarithmic data with high accuracy (R2 = 0.99 and NRSME = 0.0018). We compared the parameters of the spring-pot model before and after the change in muscle viscoelasticity. By examining these continuous time-series data, we also investigated the time taken for the effects of stretching to become apparent. Furthermore, we measured the changes in muscle viscoelasticity during static stretching before and after a short-term exercise load of running on a treadmill.
Publisher
Elsevier Ltd
Source Title
Journal of the Mechanical Behavior of Biomedical Materials
Volume (Issue)
171
Page
107111
Date of Issued
2025-11-01
Language
English
Handle URL
https://hdl.handle.net/11094/102783
PISSN
17516161
eISSN
18780180
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.jmbbm.2025.107111
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
© 2025 The Authors
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Version of Record
Category
学術雑誌論文 Journal Article