Abstract: An improved exercise apparatus for permitting a user to perform a manipulative adjustment maneuver known in the fields of chiropractics and orthopedics as the "lumbar roll" for opening the intervertebrae spaces to spontaneously permit the adjustment and proper positioning of the user's vertebrae relative to each other. Vertical support means are connected to the upper portion of a frame having a body engaging panel. A holddown means is removably mounted on the vertical support means to properly secure the upper torso of a user to the frame. At least one securing means is coupled to the lower portion of the frame to permit the user's legs to be secured thereto. The user can thereafter grasp a long horizontal lever to properly apply appropriate pressure during the user's performance of the "lumbar roll" by rotating his lower torso in one direction.