To understand human motor control, we constructed a virtual inverted pendulum (VIP) on a computer display. Subjects moved a computer mouse to stand the pendulum. The previous work showed that movements were repetition of "stop" and "go", and maximal velocities during the "go" phase seemed proportional to that of the pendulum's top in the preceding "stop" phase. The present study examined effects of velocities of the pendulum's top on VIP control.