تأثير ناهنجاري ساختاري كف پاي صاف و گود بر تعادل پويا در دختران نوجوان

Effects of pes cavus and pes planus on dynamic postural control among adolescent girls

The purpose of this study was to determine the effect of foot deformities including pes cavus and pes planus on dynamic postural control among adolescent girls. Sixty adolescent girls (age 13.5 ｱ 0.7 years; height 155 ｱ 3.2 cm; weight 48.5 ｱ3.7 kg) were categorized into three groups depending on their bilateral foot types namely, pes planus, pes cavus and rectus. Foot types defined by Navicular-drop measures. Dynamic stability performance was measured using the Biodex Stability System, which consists of a movable balance platform. We assessed postural deviation of the subjects on the platform at stable and unstable levels over a period of 20s. ANOVA with repeated measures followed by Tukey HSD test was employed for statistical analyses (p<0.05). Pes cavus group showed a poorer dynamic postural stability in comparison with individuals with pes planus and rectus feet. There was no significant difference between stability performance of the subjects with planus and rectus feet, but individuals with rectus feet had a better dynamic postural stability while standing on an unstable position. It seems the plantar surface of the foot has a main role for maintaining of posture in an unstable position. These results suggest that postural control under dynamic position could be affected by foot type.