[RESULTS] A logistic regression analysis showed that `` progression '' of stages was associated with improvements in the timed up and go test ( AOR 2.7 ; 95 % CI 1.3-5 .8 ) and sit and reach ( AOR 1.14 ; 95 % CI 1.0-1 .3 ) , while `` relapse '' of stages was associated with the group allocation ( AOR 4.6 ; 95 % CI 1.1-18 .8 ) , self-efficacy in `` Walking '' ( AOR 1.54 ; 95 % CI 1.0-2 .3 ) and `` Stair climbing '' ( AOR 0.68 ; 95 % CI 0.5-0 .9 ) with respect to physical activity during the intervention period .