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Estimate segment inertial properties for lower-limb inverse dynamics

Source: R/kinetics-inverse-dynamics.R
estimateSegmentInertia.Rd

Builds foot/shank/thigh inertial parameters from body mass and segment lengths using De Leva-style coefficients.

Usage

estimateSegmentInertia(
  body_mass,
  segment_lengths = NULL,
  body_height = NULL,
  model = c("deLeva_male", "deLeva_female")
)

Arguments

body_mass

Body mass in kilograms.

segment_lengths

Named numeric vector with foot, shank, and thigh lengths in meters. If NULL, lengths are estimated from body_height.

body_height

Body height in meters, required when segment_lengths = NULL.

model

Anthropometric coefficient set: "deLeva_male" or "deLeva_female".

Value

A data.frame with segment mass, COM fraction, radius of gyration, and segment moment of inertia about COM.

References

Winter DA (2009). "Biomechanics and Motor Control of Human Movement." 4th ed. John Wiley & Sons.

See also

segmentParameters() for body segment inertial parameters, inverseDynamics2D() for 2D inverse dynamics computation, inverseDynamics3D() for 3D inverse dynamics computation.

Examples

inertia <- estimateSegmentInertia(
  body_mass = 70,
  segment_lengths = c(foot = 0.25, shank = 0.43, thigh = 0.45)
)