There was no statistically significant between group differences in the Walking Index for Spinal Cord Injury [ mean difference = 0.3 points ; 95 % CI ( -4.8 to 5.4 ) ; p = 0.748 ] or the Lower Extremity Muscle Score [ mean difference = 0.2 points ; 95 % CI ( -3.8 to 5.1 ) ; p = 0.749 ] .