Three types of body motion generate power

• Linear. The body and center of mass move in straight line toward the target behind the technique.
• Circular. The body rotates or twists around a vertical axis that extends through the center of mass so part of the body's mass is rotated toward the target behind the technique.
• Pendulum. The center of mass rises and falls toward the target behind the technique.

Linear Motion (Thrusting)

Linear motion refers to thrusting the hips, body mass, and technique straight toward the target. The pivot leg, which provides propelling force behind the movement, pushes the body forward by the reaction that occurs when it is straightened and thrust backward and down ward against the ground. The faster and harder the leg is thrust against the ground, the more powerful the movement toward the target. The faster the mass of the body is moving when the technique impacts, the more power that will be generated by the technique. For this to happen there must be a tight connection between the lower and upper body. For this connection to occur the muscles of the abdomen, lower back, and sides must be contracted.