A positive effect was observed on the Mindstreams memory subscale and anxiety scores -LSB- Pillai 's trace : F ( @,@ ) = @ , p = @ ; and F ( @,@ ) = @ , p = @ , respectively , over the course of the study -RSB- as well as on mobility ( TUG test ) -LSB- Pillai 's trace : F ( @,@ ) = @ ; p = @ -RSB- , whereas gait speed and stride time variability did not change .