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AIST Human Body Database > Human Body Properties Database > Body Segment Parameters : 09)Inertial Properties of the Human Trunk of Males Determined from Magnetic Resonunce Imaging

Inertial Properties of the Human Trunk of Males Determined from Magnetic Resonunce Imaging

ReferenceInertial Properties of the Human Trunk of Males Determined from Magnetic Resonunce Imaging
JournalAnnals of Biomedical engineering Vol.22 (1994) 692-706
AuthorD.J.Pearsall,J.G.Reid
ItemD COG M I
StateLiving
Sample number26
SexMale
Age40.5±14.4
Measurement yearn/a
RaceCaucasian
Measurement placeCanada
Measurement techniqueMRI
Raw data accessibilityNG

01

(1)Definition of body segmentation

Only torso part is meausred

Head and neck-Upper part of torso
suprasternal notch

Upper part of torso-Middle part of torso
xiphoid process

Middle part of torso-Lower part of torso
umbilicus

(2)Predictive model

(3)Validation

Regression coefficients

The ratio of the center of gravity

・The following table shows regression coefficients.
・The ratio of the COG is calculated as percentage of the segment length measured from the proximal end.

Note: Stature in cm and body weight in kg.
Ex.)
The ratio of the COG of the total trunk=9.58+0.09×stature(cm)+0.06×body weight(kg)


Segment mass

The following table shows regression coefficients.
Note: Weight in kg, stature in cm and body weight in kg.
Ex.)The trunk mass(kg)=26371.4-182×stature(cm)+525.8×body weight(kg)

Moment of inertia

The following table shows regression coefficients.
Note:
・The origin of the coordinate system for each segment is the center of gravity of that segment. The x-axis is defined as the frontal axis and +x is the direction from origin towards the front of the body. The y-axis is defined as the saggital axis and +y is the dorection from the origin towards the left of the body. The z-axis is defined as the horizontal-axis and +z is direction from the origin towards the head.
・Weight in kg, moment of inertia in g・cm2 and segment length and stature in m.
Ex.)
Moment of inertia of the trunk around x-axis(g・cm2)=-6.09×106-8.74×103×stature(cm)+3.23×105×body weight(kg)