Sponsor
This work was supported by the National Science Foundation, grant number IIS160811 and a Graduate Assistance in Areas of National Need Fellowship, grant number P200A150316.
Published In
Biomimetics
Document Type
Article
Publication Date
1-25-2019
Subjects
Biomechanics, Striated muscle, Rats -- Hindlimb -- Kinematics
Abstract
Understanding the kinematics of a hindlimb model is a fundamental aspect of modeling coordinated locomotion. This work describes the development process of a rat hindlimb model that contains a complete muscular system and incorporates physiological walking data to examine realistic muscle movements during a step cycle. Moment arm profiles for selected muscles are analyzed and presented as the first steps to calculating torque generation at hindlimb joints. A technique for calculating muscle moment arms from muscle attachment points in a three-dimensional (3D) space has been established. This model accounts for the configuration of adjacent joints, a critical aspect of biarticular moment arm analysis that must be considered when calculating joint torque. Moment arm profiles from isolated muscle motions are compared to two existing models. The dependence of biarticular muscle’s moment arms on the configuration of the adjacent joint is a critical aspect of moment arm analysis that must be considered when calculating joint torque. The variability in moment arm profiles suggests changes in muscle function during a step.
DOI
10.3390/biomimetics4010010
Persistent Identifier
https://archives.pdx.edu/ds/psu/28350
Citation Details
Young, F., Rode, C., Hunt, A., & Quinn, R. (2019). Analyzing moment arm profiles in a full-muscle rat hindlimb model. Biomimetics, 4(1), 10.
Description
© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).