Reference
Anthropometric relationships of body and body segment moments of inertia

Journal
AFAMRLTR80119

Author
J.T. McConville

Item
V COV I PAI(Principal Axis of Inertia)

State
Living

Sample number
31

Sex
Male

Age
27.45±5.64

Measurement year
?

Race
Caucasian

Measurement place
USA

Measurement technique
Photogrammetry

Raw data accesibility
×



(1)Definition of Body segment
24segments:head，Neck，Thorax，Abdomen，Pelvis，Upper arm，Forearm，Hand，Flap，Thigh，Calf，Foot，Thigh―Flap，Lower
Arm＋Hand
a.Head―Neck
The cut plane passes through the left and right gonial points and nuchale
b.Neck―Thorax
The compound plane consists of two components. The horizontal plane originates at the cervicale, and passes anteriorly parallel with the standing surface.
The second plane originates at the lower of the two clavicale landmarks,
rises 45 degree from the horizontal, and passes diagonally superiorlyposteriorly
until it intersects with the horizontal plane.
c.Thorax―Abdomen
The cut plane begins at the 10th rib midspine landmark and passes through
the torso parallel with the standing surface.
d.Abdomen―Pelvis
The cut plane begins at the higher of the two iliocristale landmarks and
passes through the torso parallel with the standing surface.
e.Pelvis―Thigh
The cut plane begins at the center of the crotch and passes laterally midway between the anterior superior iliac spine and trochanteric landmarks along the line of the right and left inguinal ligaments.
f.Thigh−Flap
The cut plane begins at the gluteal furrow landmark and passes through
the thigh parallel to the standing surface
g.Thigh―Calf
The cut plane passes through the lateral femoral epicondyle landmark parallel
to the standing plane.
h.Calf―Foot
The cut plane begins at the sphyrion landmark and passes through the ankle
parallel to the standing height.
i.Thorax―Upper Arm
The cut plane begins at the acromion landmark and passes downward through the anterior and posterior scye creases at the level of the axilla.
j.Upper arm―Forearm
The cut plane begins at the olecranon landmark and passes through the medial
and lateral humeral epicondyle landmarks.
k.Forearm―Hand
The cut plane begins at the ulnar and radial styloid landmark and passes
through the wrist perpendicular to the long axis of the forearm.
 (2)Predictive model
 ･The center of volume is calculated as the mean distance from the anatomical
axis origin of each segments
 ･The principal axes of inertia are calculated as the mean angle with respect to the anatomical axis of each segments.
 ･Volume and principal moment of inertia are calculated using regression equations, as follows．
 A.Volume and principal moment of inertia are predicted using equations including body weight and stature.
 B.Volume and principal moment of inertia are predicted using equations including the three anthropometric variables that have the first,
second and third greatest correlation coefficients of all variables.
 (3)Validation
 ･Comparison of measurement of principal moments of inertia of the whole body between the photogrammetry method and mechanical vibration method.
 →X: 12.96, Y: 4.05 Z: 1.08%
 ･Comparison of measurement of principal moments of inertia of all segments between the photogrammetry method and the cadaver segmentation method
of Chandler
 →The values by photogrammetry method are almost consistently larger than
those by cadaver segmentation method

