Abstract: A device for passive-motion treatment of the human body comprises a body support platform that has a foot end and a head end and including a base section and a back support section which is movable relative to the base section along a longitudinal axis (L) extending between the foot end and the head end of the body support platform. The back support section or at least one subsection thereof is resiliently movable relative to the base section and connected with a vibrator by which the subsection is caused to vibrate in one or more directions. The body support platform exposes the spine of the human body to simultaneous longitudinal waves and a cyclical tilting motion so that the spine is moved in a cyclical helical path.