보행속도가 비만인의 하지관절에 미치는 영향 - 과체중과 비만인 중심 - = The Effect of Walking Speed on Joints of Lower Extremity in Obese Adult

다국어 초록 (Multilingual Abstract)

The purpose of this study is to analyze variants of the walking by four different walking speeds between obese groups: one group is an obese group of lay people, the other is an obese group of Ssirum players which is named as an overweight group for convenience not by body mass index. Four different walking speeds are 1.21±0.02m/s, 1.47±0.02m/s, 1.81±0.03m/s, and 2.10±0.04m/s. Analyzed variants of the walking are time, angle, and EMG pattern of lower extremity joints in the stance phase. We applied tow-way ANOVA(2(RG)×4(RM)) and p value was α=.05. There was not statistically significant difference of time of the stance phase between the obese and overweight group. At heel contact event of the stance phase, angle values of ankle and knee are statistically significant within each group(p=.022, p=.031) but not between groups. At toe off event, angle values of ankle, knee, and hip are all insignificant. Mean EMG muscle activity of biceps femoris is a statistically significant interaction(speed×group) between two groups(p=.024) and the others of rectus femoris(RF), vastus lateralis(VL), vastus medialis(VM), tibialis anterior(TA), and medial gastrocnemius(MG) muscle by the acceleration of walking speed were not significant both within each group and between groups. In conclusion there is no significant difference in the stance phase between the obese and overweight group by the acceleration of walking speed.

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