Abstract: A spinal therapy apparatus includes one or more manipulating assemblies. In some examples a first manipulating member is arranged to engage a spine at a first vertebral area between a spinous process and a transverse process on a first side of a spine and a second manipulating member is arranged to engage the spine at a second vertebral area between a spinous process and a transverse process on the first side of the spine. The first and second manipulating members are coupled together at their proximal ends to permit the first and second manipulating members to be driven simultaneously and the coupling permits motion of the first and second manipulating members relative to one another in an axial direction. In other examples a drive system is adapted to drive first and second manipulating members simultaneously and independently. The disclosure also relates to a spinal therapy bed including such manipulating assemblies and methods of using and training spinal therapy devices.