Abstract: A method and a tilting device for exercising a spinal column of a seated user. The method may include activating a tilting device included in a controllable chair to provide at least one exercise scheme that includes two or more repeatable tilting movements of a seat of the controllable chair around at least two different axes, a number of repetitions for each tilting movement, speed and amplitude of each tilting movement and causing repeatable movements to the pelvis of the seated user as to stimulate movements of all the vertebrae throughout the spinal column of the seated user. The continuous repeatable seat movements may cause the user's spinal column to move between the body's natural vertical midline into a convex shape.

Abstract: A tilting device for controlling a seat and prompting a change in a sitting position may include a fixed portion, connectable to a base of a chair; a movable portion connectable to a seat of the chair; a joint, positioned between the fixed portion and the movable portion configured to allow relative movement of movable portion with respect to fixed portion around at least two axes; and at least two actuators. The at least two axes may be orthogonal to each other and to an axis of the base of the chair. The device may further include a controller configured to control the operation of the at least two actuators. The device may further include at least one sensor configured to send an indication to the controller when a weight is placed on a seat of the chair. A system and a method are also described.