Table of Contents
Segment Mass
Every segment in a Visual3D model has a mass, which is used to calculate kinetic quantities.
Default Segment Mass
The default segment masses defined in Visual3D are based on Dempster's 1955 regression equations1) (link) and are:
| Segment | Mass (% body mass) |
|---|---|
| Foot | 0.0145 |
| Shank | 0.0465 |
| Thigh | 0.10 |
| Hand | 0.006 |
| Forearm | 0.016 |
| Upper arm | 0.028 |
| Pelvis | 0.142 |
| Thorax/abdomen | 0.355 |
| Head | 0.081 |
| Trunk | 0.497 |
Modifying Segment Mass
Users can modify Segment Mass under the segment properties tab in Visual3D's model builder.
See Also
Visual3D also supports the Adjusted Zatsiorsky-Seluyanov parameters2).
Go back to the Segment Overview for more information about segments in Visual3D.
1)
Dempster, W. T. (1955). Space requirements of the seated operator, geometrical, kinematic, and mechanical aspects of the body with special reference to the limbs (No. WADCTR55159).
2)
De Leva, P. (1996). Adjustments to Zatsiorsky-Seluyanov's segment inertia parameters. Journal of biomechanics, 29(9), 1223-1230.