After wearing the knee brace, in both the stance phase and swing phase, the activity of the VMO and VL showed a decreasing trend and the activity of the BF showed an increasing trend, but a statistically significant difference was apparent in the VMO only (p<0.05) ( Fig. 6 ).
Comparison of the degree of muscle activation before and after using the knee brace in slow walking In the stance phase, the activity of the muscles around the knee joints showed an increasing trend in each VMO, VL and BF after wearing the knee brace but there was no significant difference ( Fig. 5 ).
In both the extension and the flexion periods, at the time of wearing the knee brace, all activities of the VMO, VL and BF showed a decreasing trend, however there was a significant difference in only the VMO (p<0.05), while there was no statistical difference in the VL and BF.