作者
Jussi Peltonen, Neil J Cronin, Lauri Stenroth, Taija Finni, Janne Avela
发表日期
2013/12
期刊
Springerplus
卷号
2
页码范围
1-8
出版商
Springer International Publishing
简介
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 s-1 (mean ± standard error), respectively. However, neither …
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J Peltonen, NJ Cronin, L Stenroth, T Finni, J Avela - Springerplus, 2013