A support device 2 for supporting upholstery of a sitting and / or lying furniture has a spring elements 22, 24 having base body 20 for planar support of the padding and at least one loading / unloading device 26, 26 'for achieving a Druckbe- or relief on the padding on, wherein the loading / unloading device 26, 26 'for achieving a Druckbe- or relief on at least one spring element 22, 24 acts. The loading / unloading device 26, 26 'has at least one electric motor 34, which is in operative connection with at least one pressure element 36, by means of which a pressure force on at least one spring element 22, 24 is exercised or exercised to achieve a Druckbe- or relief. The loading / unloading device 26, 26 'has at least one first carriage 28, which is in driving connection with an electric motor 34, which is translationally movable in the longitudinal direction of the support device 2, wherein the first carriage 28 carries at least one arm 33 whose free end bears the pressure element 36 contributes to loading / unloading of the spring elements 22, 24th
