Body segment parameters )03)Anthropometric relationships of body and body segment moments of inertia

Reference

Anthropometric relationships of body and body segment moments of inertia

Journal

AFAMRL-TR-80-119

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

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01
(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 superiorly-posteriorly until it intersects with the horizontal plane.

c.Thorax―Abdomen
The cut plane begins at the 10th rib mid-spine landmark and passes through the torso parallel with the standing surface.

d.Abdomen―Pelvis
The cut plane begins at the higher of the two ilio-cristale 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