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From this basic position of stability, the motion of the body can now be fully utilized. There are three kinds of motion possible: linear motion, which is a translation of the center of gravity; circular motion, which is a rotation around the center of gravity; and pendular motion, which is a swing of the center of gravity in a vertical plane. As the center of gravity is located between the hips, and as the hips and abdominal region account for about one-third of the weight of the body, it is clear that a considerable momentum can be generated by either moving the hips forward, rotating them, or swinging them. Thus, every action in karatedo must start from the hips. Another reason for this is that muscles of the waist and abdominal region are very powerful but because of their configuration can only be slowly brought into action and must therefore be contracted at the earliest stage of the movement.

A linear momentum is generated when the body is propelled forward by the rear leg. At first the hips are moved backward to shift the weight of the body on the rear leg. The spring of the leg (muscular action) and the reaction force created by the ground are then transmitted to the hips resulting in a forward motion. The center of gravity describes, in fact, a slightly curved trajectory because of the vertical component of the impulse force.