NOVELTY - The apparatus has footrest stands (4) formed with attachment slit (b) in front-back direction and positioning slits (4c) formed in left-right direction. Right and left movement of footrest stands can be prevented by inserting circumferential board (74b) of cover (73) into attachment slit. Front and back movement of footrest stands can be prevented by fitting positioning protrusions (74f), formed at inner surface of circumferential board, to positioning slits. The positioning slits are formed in three places in front-back direction to adjust position of footrest stands.    USE - Auxiliary exercise apparatus used in training user's balance function and motor function by swiveling the seat where a user sits and by making the user performed transitive exercise.    ADVANTAGE - Provides an auxiliary exercise apparatus that can be easily used even by a user with little experience since the seat surface of the auxiliary exercise apparatus is low to the extent in which user's feet reach the floor. Ensures that the position of the footrest stands can be adjusted in front-back direction, and can be set in high foot position for easy use according to the user's leg length.    DETAILED DESCRIPTION - The footrest stands are arranged in pairs and mounted in the right and left sections of a mount frame (3), such that the feet of the user sitting on a seat (1) can rest on the footrest stands. The seat swivels with the use of a drive device. The drive device is fixed to the mount frame which is mounted above floor level. The cover is arranged to form the mount frame.    DESCRIPTION OF DRAWING(S) - The figure shows the external perspective view of the auxiliary exercise apparatus, and the exploded perspective view illustrating the principal portion of the auxiliary exercise apparatus. (Drawing includes non-English language text).    Seat (1)    Mount frame (3)    Footrest stands (4)    Positioning slits (4c)    Cover (73)    Circumferential board (74b)    Positioning protrusions (74f)    Attachment slit (b)