foot connection unit f with the foot connection adapter af consists of a two part assembly both parts af 1 and af 2 of the assembly are mounted kinematically in relation to one another and the bearing shaft is identified with reference numeral 28 additionally an elastomer insert 29 is disposed between both parts of the foot connection adapter af according to the way the foot is put down a deflecting angle is generated between both parts of the foot adapter which causes an offset motion in a pressure plunger 30 to trigger a control signal via the control line 27 the following features should be noted the foot connection unit is configured such that lowering the foot near ground is recognized and a hydraulic signal is released by the control line to close the damper chamber 13 the rolling off phase of the foot is recognized by the hydraulic control system which opens the damper chamber 13 kinematics positioning and the design of the foot connection unit f as well as the hydraulic transmission conditions of the complete control circuit are designed in the embodiment of the invention such that the required activation paths and or angles at the foot connection unit f are kept to a minimum the positioning and connection of the foot connection unit f by means of elastomer or vulcanized rubber inserts 29 allow both parts af 1 and af 2 of the foot connection unit to be positioned relative to one another and separated acoustically in addition by means of elastomer insert 29 a defined activation path and or angle relative to one another is possible which can be reversed load free by elasticity to the initial position in the foot connection unit f a balancing chamber with plunger is further provided.