A positive effect was observed on the Mindstreams memory subscale and anxiety scores [ Pillai 's trace : F ( 6,724 ) = 0.508 , p = 0.010 ; and F ( 7,792 ) = 0.545 , p = 0.006 , respectively , over the course of the study ] as well as on mobility ( TUG test ) [ Pillai 's trace : F ( 4,863 ) = 0.448 ; p = 0.028 ] , whereas gait speed and stride time variability did not change .