Assessments ( step length differential , self-selected and fast walking speed , 6-minute walk test , Berg Balance Scale [ BBS ] , Dynamic Gait Index [ DGI ] , Activities-specific Balance Confidence [ ABC ] scale , single limb stance , Timed Up and Go [ TUG ] , Fugl-Meyer [ FM ] , and perceived recovery [ PR ] ) were conducted before , immediately after , and 3 months after intervention .