A user's motion while seated on an active chair is monitored and the user's metabolic expenditures stemming from the motion are determined. Information associated with or derived from the measured motion and/or determined metabolic expenditures may be be displayed. Motion sensors and gyroscopes are configured to detect the motion of the active chair associated with active sitting while the user is sitting. Data from these sensors is used to determine sitting activity of the user. In addition, a sitter's posture may be monitored and alerts sent to encourage the siter to improve posture. A training aspect may also be included that assists sitters/users to improve posture generally by guiding them through a patterned series of movement designed to improve pelvic mobility and awareness.

A spring actuated rocking mechanism can be attached to the legs of a collapsible chair to allow for the user to rock in the collapsible chair. The mechanism may be attached at the factory or retrofitted to the chair. The rocking mechanism can be attached to the end of a leg or disposed within a leg, having a leg portion above and below the mechanism.

A spring actuated rocking mechanism can be attached to the legs of a collapsible chair to allow for the user to rock in the collapsible chair. The mechanism may be attached at the factory or retrofitted to the chair. The rocking mechanism can be attached to the end of a leg or disposed within a leg, having a leg portion above and below the mechanism.

Systems and methods are disclosed for a seat base for a saddle seat. An example seat base may include a first face, the first face forming a planar surface to allow the seat base to be arranged on a surface to be seated, and a second face, the second face forming a concave surface, the concave surface restricting the lateral movement of the saddle seat by guiding the round lower part of the saddle seat towards the lowest point of the concave surface.

Systems and methods are disclosed for a seat base for a saddle seat. An example seat base may include a first face, the first face forming a planar surface to allow the seat base to be arranged on a surface to be seated, and a second face, the second face forming a concave surface, the concave surface restricting the lateral movement of the saddle seat by guiding the round lower part of the saddle seat towards the lowest point of the concave surface.

A stool and desk support system. The system includes a stool base and a desk support surface. A support member may connect the desk support surface to the stool base and support the desk support surface above a floor surface. The stool base may include a stool seat surface and a rocking mechanism opposite the stool seat surface. The desk support surface may be connected to a desk support base by a neck extending from the desk support base. The stool base may include an upper stool base frame and a lower stool base frame. The upper stool base frame may be height adjustable with respect to the lower stool base frame. The desk support base may connect to the upper stool base frame, permitting coinciding height adjustment of the desk support surface and the upper stool base frame.

A stool and desk support system. The system includes a stool base and a desk support surface. A support member may connect the desk support surface to the stool base and support the desk support surface above a floor surface. The stool base may include a stool seat surface and a rocking mechanism opposite the stool seat surface. The desk support surface may be connected to a desk support base by a neck extending from the desk support base. The stool base may include an upper stool base frame and a lower stool base frame. The upper stool base frame may be height adjustable with respect to the lower stool base frame. The desk support base may connect to the upper stool base frame, permitting coinciding height adjustment of the desk support surface and the upper stool base frame.

Adjustment device for a chair which is provided with a rocking mechanism composed of a first plate, fixed to a central gas-operated post for the height adjustment of a seat and to which a second plate is articulated, about a first axis that is transverse thereto and so that it can rock, the second plate being fixed to a seat or being integral with a seat and interacting with elements which are adapted to contrast the rocking of a backrest. A first cable is slideably associated with the first plate and is adapted to activate a lever which is articulated internally to the first plate at a different second axis and is adapted to activate the height adjustment of the seat. A second cable is further slideably associated with the first plate and is adapted to activate a mechanism which allows or prevents the rocking of the second plate.

A chair support shell has an integral back portion, seat portion, and joining portion between the back portion and the seat portion. At least a major portion of the support shell comprises a compliant structure, the compliant structure having a plurality of cells interconnected by a plurality of resilient members. The compliant structure provides compliance in the seat portion, compliance in the back portion, and compliance in the joining portion. The compliant structure enables recline of the back portion relative to the seat portion.

A pivot rocking chair for comfort and rotation through an orientation axis and a horizontal axis of rotation. wherein. The pivot rocking chair comprises a pivot base, and a chair portion. The pivot base comprises a front portion and a back portion. A single lower support is configured to connect to the pivot base with the chair portion. The pivot base comprises a top surface, a bottom surface, a first side edge, and a second side edge. The pivot base comprises a length and a width. The length comprises a forward rocking portion and a rearward rocking portion.