The effect of subgroup × PLM interaction on the mean acceleration approached significance ( p -values = 0.07; Table 2 ), while the effect of the three-factor group interaction of Subgroup × PLM × direction was significant ( p -values < 0.05; Table 2 ).
As shown in Table 3 , Table 4 and Table 5 , the maximum velocity ( Figure 2 ), mean velocity ( Figure 3 ), maximum acceleration ( Figure 4 ) and mean acceleration ( Figure 5 ) variables revealed a decreasing trend with the increase in motion asymmetry (moving from 0° to 30°) in both flexion and extension directions, for each of the three subgroups.