US Patent 10188901 Torso muscle and spine exercise apparatus

An exercise apparatus comprising a base; a supporting surface carried by the base, the supporting surface to receive a weight bearing portion of a user's body; a support frame carried by the base; a stationary pelvic belt receiving frame carried by the support frame; a pelvic belt rotatably received within the stationary pelvic belt receiving frame and configured to securely receive a pelvic area of the user's body for rotation therewith; and one or more mechanical force resistors carried by the support frame and operably coupled to the pelvic belt so as to impart resistance to rotation of the pelvic belt relative to the stationary pelvic belt receiving frame.