Table 3. Different phase EMG activity and one-way ANOVA significant. Phases Muscle F p η2 power Post hoc Pre-landing TA 4.77 .018* .293 .737 H > C, I PL 6.09 .008* .367 .836 H > C, I Landing MG 5.68 .013* .401 .793 H, C < I Soleus 4.00 .033* .267 .653 H, C < I Descending PL 4.82 .017* .287 .745 H > C, I TA 3.98 .035* .285 .645 H > C, I Soleus/TA 4.34 .026* .283 .692 H < I MG/TA 3.58 .047* .264 .596 H < I H= Uninjured control group; C = Copers group; I = CAI group; GM = gluteus medius; RF = rectus femoris; VM = vastus medialis; BF = biceps femoris; TA = tibialis anterior; PL = peroneus longus; MG = medial gastrocnemius; S = soleus; Pre-landing phase: 100 ms prior to initial contact; Landing: Initial contact with ground; Descending phase: Initial contact to maximum knee flexion.