Table 3 Muscle-tendon parameters in the calibrated NMS model

From: Functional symmetrization of neuromotor modules during locomotor development in human infants

Parameter

Interpretation

c1

First recursive coefficient for estimating past neural activation from muscle excitation

c2

Second recursive coefficient for estimating past neural activation from muscle excitation

ShapeFactor

Nonlinear factor describing the transformation from neural activation to muscle activation

ActivationScale

Scaling coefficient for muscle activation

OptimalFibreLength

Fiber length at which maximum activation occurs

PennationAngle

Pennation angle of the fiber at maximum activation

TendonSlackLength

Tendon length when the tendon is slack (not under tension)

MaxContractionVelocity

Maximum velocity at which a muscle fiber can contract

MaxIsometricForce

Maximum force a muscle can generate during isometric contraction

StrengthCoefficient

Multiplicative factor applied to max isometric force for muscles within the same group