A system for mitigation of induced acceleration to an occupant of a vehicle seat includes a substantially non-deforming structure having a top side with the vehicle seat mounted thereon and a bottom side forming a first portion of a floor of the vehicle, and at least one deformable bracket mounting the non-deforming structure to a second portion of the floor that is separate from the first portion of the floor. The at least one deformable bracket deforms, and the non-deforming structure extends through the floor when the vehicle is subjected to an upward force that is equal to or greater than a predetermined force that corresponds to an induced upward acceleration.