Efficient gait is compensate for a lack of exercise, but the wrong walking can cause disease that joints, muscles, brain and body structure (Scott & Winter, 1990). Also many researchers has been studied gait of positive mechanism using analytical methods kinetic, kinematic. This study is to identify nature of knee adduction moment, depending on different foot progression angle and the movement of rotation of pelvis and body. Health study subject conducted intended walking with three different angles. The subjects of this study classified three types of walking; walk erect, pigeon-toed walk and an out-toed gait. Ten university students of K without previous operation and disease record selected for this study. For accuracy of this study, three types of walking carried out five times with 3D image analysis and using analysis of ground reaction force to analyze nature of knee adduction moment and the movement of rotation of pelvis and body. Firstly, the HC(heel contact) section value of intended walk erect, pigeon-toed walk and an out-toed gait was not shown statistically significant difference but TO(toe off) section value was shown that the pigeon-toed walk statistically significant. The value of pigeon-toed walk was smallest knee adduction moment(p< 0.005). Secondly, X axis was the change of rotation movement body and pelvis when walk erect, pigeon-toed walk and an out-toed gait. Shown statistically Y axis was not shown statistically significant but Z axis statistically significant(p<0.05). These result show the significant differences on TO section when walking moment reaches HC, it decides the walking types and rotates the foot.

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The purpose of this study was to investigate analysis of difference of electromyographic activity on rectus femoris(RF), vastus medialis oblique(VMO), vastus lateralis(VL) and gluteus medius(GM) on type of weight-bearing in patients with patellofemoral pain syndorme. [METHODS] The subjects of this study were 13 female patients with patellofemoral pain syndorme 16 case(Right 8 case, Left 8 case) who are 20 -30 years. The subjects of the study were rectus femoris, vastus medialis oblique, vastus lateralis and gluteus medius attached EMG electrodes to measure the electromyographic activity during weight-bearing exercise. Weight-bearing exercise was conducted half squat(HS), wall half squat(WHS), pillow wall half squat(PWHS) and single lim wall squat(SLWS). The investigator measured and analyzed the factors related to iEMG of muscle and electromyographic activity ratio during four type weight-bearing exercise the experiment collected data through measures of one-way ANOVA with the statistical significance level set at α=.05. [RESULTS] Weight-bearing exercise effective way to increase muscle activation of the VMO during weight-bearing eccentric contraction was shown to SLWS, weight-bearing exercise effective way to increase muscle activation of the GM were to PWHS. Second, weight-bearing exercise effective way to increase muscle activation of the GM during weight-bearing isometric contraction was shown to WHS and PWHS. Third, the weight-bearing concentric contraction of muscles during four kinds of effective weight-bearing exercise to increase muscle activation of specific muscles were not.[CONCLUSIONS] This study the results of the four type weight-bearing exercise according to the class of muscle contraction in the muscle activity with PFPS patients through each muscle was confirmed that the most efficient forms of exercise.