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In my locomotion analysis software, I use the equations of Jensen from
the Journal of Biomechanics:
Changes in segment inertia proportions between 4 and 20 years
v.22(6/7) p.529-36 1989
These assume symmetry of the segments about the long axis. There are some
other quirks which I cannot remember right now. If you are interested,
take a look at the ANZ software package archived at BIOMCH-L to see how I
coded the equations (in FORTRAN). The subroutines for inertia params are
in the file segment.for and are called something like CalcFullBodyMassInteria
or some such.
Dwight Meglan
Mayo Clinic
Orthopedic Biomechanics Lab
meglan@mayo.edu
the Journal of Biomechanics:
Changes in segment inertia proportions between 4 and 20 years
v.22(6/7) p.529-36 1989
These assume symmetry of the segments about the long axis. There are some
other quirks which I cannot remember right now. If you are interested,
take a look at the ANZ software package archived at BIOMCH-L to see how I
coded the equations (in FORTRAN). The subroutines for inertia params are
in the file segment.for and are called something like CalcFullBodyMassInteria
or some such.
Dwight Meglan
Mayo Clinic
Orthopedic Biomechanics Lab
meglan@mayo.edu