Interactive effects of joint angle, contraction state and method on estimates of Achilles tendon moment arms

Fath, Florian, Blazevich, Anthony J., Waugh, Charlie M., Miller, Stuart C. and Korff, Thomas (2013) Interactive effects of joint angle, contraction state and method on estimates of Achilles tendon moment arms. Journal of Applied Biomechanics, 29 (2). pp. 241-244. ISSN 1065-8483

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Abstract

The muscle-tendon moment arm is an important input parameter for musculoskeletal models. Moment arms change as a function of joint angle and contraction state and depend on the method being employed. The overall purpose was to gain insights into the interactive effects of joint angle, contraction state and method on the Achilles tendon moment arm using the center of rotation (COR) and the tendon excursion method (TE). Moment arms were obtained at rest (TErest, CORrest) and during a maximum voluntary contraction (CORMVC) at four angles. We found strong correlations between TErest and CORMVC for all angles (0.72 ≤ r ≤ 0.93) with Achilles tendon moment arms using CORMVC being 33 - 36% greater than those obtained from TErest. The relationship between Achilles tendon moment arms and angle was similar across both methods and both levels of muscular contraction. Finally, Achilles tendon moment arms for CORrest were 1 – 8% greater than for CORMVC. [NB rendition of scientific symbols is approximate in this display; please check full text for precise rendition].

Item Type: Article
Keywords (uncontrolled): moment arm, ankle joint, tendon excursion, center of rotation
Research Areas: A. > School of Science and Technology > London Sport Institute
A. > School of Science and Technology > London Sport Institute > Biomechanics at the London Sport Institute
Item ID: 10671
Depositing User: Stuart Miller
Date Deposited: 04 Jul 2013 13:36
Last Modified: 03 Apr 2019 08:30
URI: https://eprints.mdx.ac.uk/id/eprint/10671

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  • Interactive effects of joint angle, contraction state and method on estimates of Achilles tendon moment arms. (deposited 04 Jul 2013 13:36) [Currently Displayed]

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