Definition and Choice
A gravity ball represents the average of all masses of a specific body part — such as the head, chest or legs.
We choose to use 19 gravities to represent the total body weight. In this way, we have a good balance between possibilities of movements and simplicity of coordination.
Each chosen gravity contributes a certain percentage to the total body weight, which is shown in the following picture:
(Source (amongst others): Miller and Richard, Biomechanics of Sport: A Research Approach, Lea & Febiger, 1973)
Body Rise in Relation to Gravities
3D View
The release of the gravities into the supporting ankle creates the upswing into the golden road for the body rise.
