A three filament mechanistic model of musculotendon force and impedance.

ABSTRACT: The force developed by actively lengthened muscle depends on different structures across different scales of lengthening. For small perturbations, the active response of muscle is well captured by a linear-time-invariant (LTI) system: a stiff spring in parallel with a light damper. The force response of muscle to longer stretches is better represented by a compliant spring that can fix its end when activated. Experimental work has shown that the stiffness and damping (impedance) of muscle in response to small perturbations is of fundamental importance to motor learning and mechanical stability, while the huge forces developed during long active stretches are critical for simulating and predicting injury. Outside of motor learning and injury, muscle is actively lengthened as a part of nearl

SUBMITTER: Millard M 

PROVIDER: S-EPMC11386956 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature