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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2024
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| Online Access: | https://arxiv.org/abs/2401.13217 |
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| _version_ | 1866918143804309504 |
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| author | Kobayashi, Yo Matsuyama, Daiki |
| author_facet | Kobayashi, Yo Matsuyama, Daiki |
| contents | This study investigates how the viscoelasticity of the muscle 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 the participants, and time-series data of the reaction force (stress-relaxation data) during stretching were obtained. A model using fractional calculus (spring-pot model) was selected as the viscoelastic model for the muscle, in which the data for stress relaxation were fitted on a straight line on a both logarithmic plot. The experimental stress-relaxation results showed that viscoelasticity tended to change abruptly at a particular time during static stretching because the stress-relaxation data were represented by a broken line comprising two segments on the both logarithmic plot. Considering two states of viscoelasticity, before and after the change, the stress-relaxation curve was fitted to the spring-pot model with high accuracy using segment regression (R2 = 0.99). 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, by measuring the changes in muscle viscoelasticity during static stretching before and after a short-term exercise load of running on a treadmill, we examined the effects of short-term exercise load on the changes in viscoelasticity during static stretching. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_13217 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Measurement of changes in muscle viscoelasticity during static stretching using stress-relaxation data Kobayashi, Yo Matsuyama, Daiki Biological Physics This study investigates how the viscoelasticity of the muscle 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 the participants, and time-series data of the reaction force (stress-relaxation data) during stretching were obtained. A model using fractional calculus (spring-pot model) was selected as the viscoelastic model for the muscle, in which the data for stress relaxation were fitted on a straight line on a both logarithmic plot. The experimental stress-relaxation results showed that viscoelasticity tended to change abruptly at a particular time during static stretching because the stress-relaxation data were represented by a broken line comprising two segments on the both logarithmic plot. Considering two states of viscoelasticity, before and after the change, the stress-relaxation curve was fitted to the spring-pot model with high accuracy using segment regression (R2 = 0.99). 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, by measuring the changes in muscle viscoelasticity during static stretching before and after a short-term exercise load of running on a treadmill, we examined the effects of short-term exercise load on the changes in viscoelasticity during static stretching. |
| title | Measurement of changes in muscle viscoelasticity during static stretching using stress-relaxation data |
| topic | Biological Physics |
| url | https://arxiv.org/abs/2401.13217 |