For intra-group comparisons versus pre-treatment , at week 1 , 2 and 3 , the scores of PASS , BBA , BBS , FMA and MBI had statistically significant differences ( P < 0.05 ) ; At week 3 post-treatment , when four-channel and double-channel FES groups were compared versus pre-treatment , the scores of ipsilateral FA had statistically significant differences ( P < 0.05 ) .