Gliding board with a damping device

A gliding board with a vertical movement damping system in the front or rear zone of the board, said system including an arm the first end of which is integral with an attaching point located in the front or rear zone of the board and whose second end is integral with the piston of a hydraulic device connected to the board near the attachment, said hydraulic device applying a retaining force during the movement of the second end of the arm in order to dissipate part of the kinetic energy from the front or rear zone of the board transmitted by said arm wherein, when the movement of the arm is consecutive to a downward movement of the attaching point corresponding to a counter-bending movement of the board, the hydraulic device applies a retaining force which is less than the force applied when the movement of the arm is consecutive to a movement of the attaching point upwards, corresponding to a board bending movement.