Does a two-element muscle model offer advantages when estimating ankle plantar flexor forces during human cycling?

ABSTRACT: Traditional Hill-type muscle models, parameterized using high-quality experimental data, are often "too weak" to reproduce the joint torques generated by healthy adults during rapid, high force tasks. This study investigated whether the failure of these models to account for different types of motor units contributes to this apparent weakness; if so, muscle-driven simulations may rely on excessively high muscle excitations to generate a given force. We ran a series of forward simulations that reproduced measured ankle mechanics during cycling at five cadences ranging from 60 to 140 RPM. We generated both "nominal" simulations, in which an abstract ankle model was actuated by a 1-element Hill-type plantar flexor with a single contractile element (CE), and "test" simulations, in which the sa

SUBMITTER: Lai AKM 

PROVIDER: S-EPMC5937948 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature