The problem addressed by the invention is that of specifying a
pendulum stool (2) which can be produced as easily and cost-effectively as possible and has a long life and a high degree of sitting comfort. This aim is achieved by a one-legged
pendulum stool (2) having a seat (4), a foot plate (6) and a central column (8) arranged between the seat (4) and the foot plate (6), wherein the central column (8) comprises a
coil spring (10) and a gas compression spring (14) with a pressure cylinder (12) and a
piston rod (16), wherein the pressure cylinder (12) is provided, at least in a
central region, with a casing (34) made of an elastic foam material, wherein the
coil spring (10) is fastened to the foot plate (6) at one end projecting substantially perpendicular to the foot plate and the pressure cylinder (12) with the casing (34) is pushed into the
coil spring (10) at the other end and is fixed therein with a clamping fit, wherein the casing (34) is arranged between the pressure cylinder (12) and the windings of the coil spring (10), and wherein the
piston rod (16) supports the seat (4).