Compute Anatomical Muscle Lengths from an OpenSim Model

Extracts muscle-tendon unit (MTU) lengths from a static OpenSim model at its anatomical (neutral) posture.

Usage

compute_muscle_length_anatomical(
  model_file = "../TestData/Model_SCALED.osim",
  file_output = "muscle_length_anatomical.sto",
  write_file = FALSE,
  return_object = TRUE
)

Arguments

model_file

Path to the `.osim` model file (OpenSim 4.x format).

file_output

Name of the output file to write muscle lengths (optional).

write_file

Logical. If `TRUE`, writes output to a `.sto` file.

return_object

Logical. If `TRUE`, returns a data frame of muscle lengths.

Value

If `return_object = TRUE`, returns a data frame with muscle lengths at time = 0. Otherwise, returns invisibly.