The effect of 6 weeks rope jumping training on the plantar pressure distribution in pes planus, pes cavus and pes rectus of secondary girl students
Oral Presentation XML
2Chief of Talent Identification Departments of Khorasan Football Association
3Assistance Professor, Department of Sport Biomechanics, Kharazmi university. Tehran, Iran
Introduction: The anatomical and biomechanical structure of the lower limb especially the foot has an important role in shock observing,supporting function during gait and weight bearing.Thus,any functional or structural disorder in these areas can violate the foot function.Increase the mobility through exercise and movement activities(such as rope jumping)is a way that not only specialists but also most people spontaneously use to prevent or treat these disorders.The aim of this research,was to study the effect of 6-weeks rope jumping training on the plantar peak pressure distribution,contact area and arch index value in pes planus,cavus and rectus of secondary girl students.
Methodology: 447 girl students aged 12-14 years were scanned by the emed platform and screened by the arch index for foot type selection.Only 27 students(three groups)with a BMI of 19.9±2.2(rectus),20.1±1.6(planus)and 19.1±1.6(cavus) were randomly chosen.To record the dependent variables in the 10 areas of the foot,the emed platform with an accuracy of±7 was used and the prc masking procedure was applied.Finally,paired sample t-test and one-way ANOVA was used to compare the result intra and between the groups and the LSD post-hoc(p≤0.05)test to check the effects of the training between the groups were applied.
Result: Finding in peak pressure and contact area values only showed significant different in rope jumping effect on M03(sig=0.034)and M04(sig=0.002)that refer to medial mid foot and lateral mid foot respectively.In addition,arch index value showed the significant effect of training in pes planus(sig=0.01)and normal groups(sig=0.035).
Discussion: Switching the pressure focus from the medial forefoot to medial mid foot areas in normal group, increases the pressure value in rare foot area(M01-M04),vise versa the pressure decreases in medial and forefoot area(M05- M10)in pes planus group.Finally significant decrease in pressure values in forefoot(M09- M10)in pes cavus group are the considerable effect of rope jumping training in each group which result in significant deference at M03 and M04 areas.Additionally,significant decrease and increase of contact area values(M03,MO4)in pes planus and cavus respectively may be the main reason for peak pressure values changes in both groups.significant increase in medial longitudinal arch height in pes planus and reduction of this parameter in pes cavus group(however it was not significant)in this study refer to positive role of rope jumping training in correction of foot deformities in both groups.It may be conclude that the strength and flexibility improvement in plantar muscle,especially those are responsible to maintain the medial longitudinal arch,are the main reason for these changes that was noted.