Viscoelastic properties of the Achilles tendon in vivo
Peltonen, J., Cronin, N., Stenroth, L., Finni Juutinen, T., & Avela, J. (2013). Viscoelastic properties of the Achilles tendon in vivo. Springerplus, 2(May 8;2(1)), 212. https://doi.org/10.1186/2193-1801-2-212
© 2013 Peltonen et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
It has been postulated that human tendons are viscoelastic and their mechanical properties time-dependent. Although Achilles tendon (AT) mechanics are widely reported, there is no consensus about AT viscoelastic properties such as loading rate dependency or hysteresis, in vivo. AT force-elongation characteristics were determined from 14 subjects in an ankle dynamometer at different loading rates using motion capture assisted ultrasonography. AT stiffness and elongation were determined between 10 – 80% of maximum voluntary contraction (MVC) force at fast and slow loading rates. As subjects were unable to consistently match the target unloading rate in the slow condition, AT hysteresis was only calculated for the fast rate. There was a significant difference between the fast and the slow loading rates: 120 ± 6 vs. 21 ± 1% of MVC sˉ¹ (mean ± standard error), respectively. However, neither stiffness (193 ± 18 N mmˉ¹ vs. 207 ± 22 N mmˉ¹) nor elongation at any force level (13.0 ± 1.2 mm vs. 14.3 ± 0.9 mm at 80% of MVC) were significantly different between the fast and slow loading rates. Tendon hysteresis at the fast rate was 5 ± 2%. As stiffness was not sensitive to loading rate and hysteresis was small, it was concluded that elastic properties prevail over viscous properties in the human AT. The current results support the idea that AT stiffness is independent of loading rate. ...
Publication in research information system
MetadataShow full item record
- Liikuntatieteiden tiedekunta 
Except where otherwise noted, this item's license is described as © 2013 Peltonen et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Showing items with similar title or keywords.
Stenroth, Lauri (2012)Achilles tendon is the largest tendon in human body and it has an important role in human locomotion. Ageing is associated with lowered muscle function and the changes in tendon properties could have a major role in ...
Peltonen, Jussi (University of Jyväskylä, 2014)
Muscle-tendon morphomechanical properties of non-surgically treated Achilles tendon 1-year post-rupture Khair, Ra'ad M.; Stenroth, Lauri; Cronin, Neil J.; Reito, Aleksi; Paloneva, Juha; Finni, Taija (Elsevier BV, 2022)Background Achilles tendon rupture appears to alter stiffness and length of the tendon. These alterations may affect the function of tendon in force transmission and in energy storage and recovery. We studied the mechanical ...
Cenni, Francesco; Schless, Simon-Henri; Adams, Heleen; Bar-On, Lynn; Desloovere, Kaat (Elsevier BV, 2021)Background Ultrasound imaging combined with 3D motion analysis allows for in-vivo assessment of muscle-tendon unit lengths during gait. The clinical relevance of analysing the medial gastrocnemius (MG) and Achilles ...
Stenroth, Lauri; Thelen, Darryl; Franz, Jason (John Wiley & Sons Ltd., 2019)The Achilles tendon is a common tendon for the medial and lateral gastrocnemius and soleus muscles. Non‐uniform Achilles tendon regional displacements have been observed in vivo which may result from non‐uniform muscle ...