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Title: | Sonographic evaluation of the effect of long-term exercise on achilles tendon stiffness using shear wave elastography | Authors: | Siu, WL Chan, CH Lam, CH Lee, CM Ying, M |
Issue Date: | Nov-2016 | Source: | Journal of science and medicine in sport, Nov. 2016, v. 19, no. 11, p. 883-887 | Abstract: | Objectives:
This study aimed to assess the feasibility of using quantitative shear wave elastography (SWE) to assess the stiffness (Young's modulus) of Achilles tendon and to investigate the effect of long-term weight-bearing exercise on the stiffness of human Achilles tendon by comparing the frequent and infrequent exercise groups. Design: Case-control study. Methods: A total of 36 healthy subjects aged 19–25 were recruited. Subjects were categorized into frequent and infrequent exercise groups dependent on their level of lower limb weight bearing exercise. B-mode and shear-wave ultrasound examination of Achilles tendon were performed. Measurements of the Achilles tendon stiffness were conducted with the foot position standardized by an ankle fixer. To evaluate inter and intra-operator reliability of Young's modulus measurements, each subject was scanned by three operators and each operator scanned the subject three times. Results: The intra-operator reliability of Young's modulus measurements ranged between 0.803 and 0.845. The inter-operator measurement reliability was 0.585. Result showed that Achilles tendon on non-dominant ankle in frequent-exercisers (median: 320.1 kPa) was significantly stiffer than that in infrequent-exercisers (median: 296 kPa) (p < 0.05), whereas there was no significant difference in Achilles tendon stiffness on dominant ankle between the two groups (p > 0.05). Conclusions: Shear wave elastography is feasible for assessing the Achilles tendon's stiffness in vivo. The stiffness of Achilles tendon of frequent-exercisers was significantly higher than that of infrequent-exercisers on non-dominant ankle but not on dominant ankle. With the use of an ankle fixer, there was high repeatability and moderate reproducibility in SWE measurement of Achilles tendon stiffness. |
Keywords: | Physical activity Exercise physiology Ultrasonography Elasticity imaging techniques Elastic modulus |
Publisher: | Elsevier | Journal: | Journal of science and medicine in sport | ISSN: | 1440-2440 | EISSN: | 1878-1861 | DOI: | 10.1016/j.jsams.2016.02.013 | Rights: | © 2016 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved. © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ The following publication Siu, W. L., Chan, C. H., Lam, C. H., Lee, C. M., & Ying, M. (2016). Sonographic evaluation of the effect of long-term exercise on Achilles tendon stiffness using shear wave elastography. Journal of science and medicine in sport, 19(11), 883-887 is available at https://doi.org/10.1016/j.jsams.2016.02.013. |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Ying_Sonographic_Evaluation_Effect.pdf | Pre-Published version | 1.18 MB | Adobe PDF | View/Open |
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