Abstract: An exercise board sized to the patient's abdominal area provides for maximum lateral range extension of the shoulder rotator and limb musculoskeletal system. A ferrous loaded exercise disk on top of a flat surface sheet is magnetically coupled to permanent magnets housed below in a laterally free space to establish a magnetically induced lateral frictional resistance against the patient's lateral force on the disk anywhere on the plane of the surface sheet. An incline exercise apparatus is formed by combining the board with an incline stand and a rope, pulley and pull ring, allowing a patient's good limb to assist in rehabilitating the acutely impaired limb, as from stroke, shoulder rotator damage, or surgery. Circuitous indicia paths, some with obstacles for the disk, provide a method for the determination the patient's range performance and energy expended.

Abstract: A portable game board has a ring-shaped frame containing at least one slide panel marked with indicia used to score trajectories of playing disks slidably launched on the slide panel, which comprises a base panel, an optionally segmented game indicia panel placed on the base panel, or a transparent window slide panel. A pair of base panels having different game indicia are positionable back-to-back within the frame, and selectable by inverting the frame. The board is optionally supportable at an adjustable elevation angle, quantifiably increasing the energy required to propel a disk to distance markers on a panel. An optional platform rotatably supports the game board, facilitating access to board locations by a circle of players. Optionally, an indicia panel contains one or more recessed magnetic slugs; playing disks are provided with one or more ferromagnetic inserts which interact with the slugs to alter the trajectory of a disk.