An adjustable base is provided that includes a fixed frame and an articulating frame connected to the fixed frame. The articulating frame includes an upper body frame pivotally connected to the upper section of the fixed frame, a seat frame pivotally connected to the upper body frame and movable along a central section of the fixed frame, and a leg frame pivotally connected to the fixed frame. An actuator is further included and has a first end connected to the seat frame adjacent to the leg frame and a second end that is connected to a linkage attached to the articulating frame. Upon activation of the actuator, the upper body frame is articulated upward and the seat frame moves linearly along the central section of the fixed frame toward the upper section of the fixed frame. Systems and methods for controlling an adjustable base assembly are further provided.