The Functional Research On The Effects Of Different Bow Height Of Arch Support Inserts On The Wearing Comfort And The Plantar Pressure Distribution

Background:Functionally,the feet carry the whole body weight and also need to adapt to walking, running, jumping and other actions that can brought load in daily life.The American Podiatric Medical Association made a research indicates in September2010that about four to five people would suffer from this or that foot disease in their lifetime. While51%of people are experiencing foot pain.The reason cause of foot pain is complicated,summed up are hereditary, physiological and physical properties.Such as congenital flat feet, high arches,and hereditary hallux valgus etc.;Functional deficiencies caused by feet degenerative changes, Foot decreased perception caused by Motor neuropathy that lead to foot injury and foot pain;foot pain caused by calf muscle fatigue that close contact with the foot and foot infections;pain or Pathological changes caused by long-term external stimulate that reaches a certain intensity and wearing the wrong shoes.As to long-term and chronic foot problems,some people will take a passive rest or active recovery,such as,do not or less wear squeeze feet shoes or high-heeled shoes,Massage or soak feet with warm water etc..In need of not affect the conditions of daily life,some people will choose some auxiliary measures to auxiliary mitigate the risk of disease and the intensity of pain,such as choose to wear special shoes like diabetic shoes,hallux valgus corrective shoes,negative heeled shoes,more comfortable shoes etc.or choose to wear different insole such as whole palm insole, arch support inserts, the front paws insole, heel insole etc.While the arch support inserts has become a prescription in foreign countries,Mainly applied to students with flat feet(low arch) in Primary school or high school,middle-aged or older women suffering from hallux valgus and diabetes patients with metatarsal head disorders.But against research in the functions and mechanisms of arch support inserts is also less mentioned.In this study, we made a comparative functional analysis of two groups of young women (often wear heels and do not often wear high heels) wearing two different height of arch support inserts in order to find the effects and mechanisms on different height arch support inserts for young women on plantar pressure distribution. Objective and Significance:It is need to be resolved when knowing the mechanism of how arch support insert can relieve foot pain that what kind of impact will produce to foot structure and variation of plantar pressure distribution after adding arch support inserts,the applicability of arch support inserts in different size(length,width,arch height).So this study made a analysis of plantar pressure parameters when young women wearing different arch height of arch support inserts and subjective feelings questionnaire before and after wearing. We made a comparative study on how different arch height affect on plantar pressure distribution aimed to make a functional assessment on wearing comfort of arch support inserts. The significance is to provide data support for designing,producing and improving the product of functional arch support inerts,provide personalized solutions and reference for insole design of exercise prescription and existing arch designSubjects and Methods:The subjects are healthy young women while twenty basically do not wear high heels and another twenty often wear high heels in daily life. The one who often wear high heels are those wear more than three days a week,more than one year history of wearing high heels and high heels are more than3cm.The participate shoes size are thirty-seven or thirty-eight yards.No foot deformities and foot problems in the participate, they all normal feet and step normal state. The research methods are literature, questionnaire, experiment, statistical analysis, comparative research methods and so on.We measured the data for analysis and research through subjects wearing flat sports shoes plus two heights arch supports inserts in static, dynamic walking,up and down stairs these three states.The data include evaluation of subjective comfort feeling test to different bow height arch support inserts and objective plantar pressure testResults:There are significant changes in the morphology between the two group that often wear high heels and do not often wear high heels.The foot width, heel circumference, high transverse arch are becoming smaller. The dorsal circumference,dorsal height,first metatarsophalangeal joint height,Metatarsophalangeal wide-angle oblique and natural angle before Alice are becoming larger. With and without the arch support inserts have a great impact on comfort score. The average maximum pressure,peak pressure, impulse where peak pressure in and pressure-time integral in Metatarsal and Lateral heel are all decrease after wearing arch support inserts.And the peak pressure in arch increasing a little. In normal walking process,the using of arch support inserts can improve the comfort feeling of the forefoot portion especially2-3metatarsal.But the comfort feeling on medial arch region become worse when plusing the high arch support inserts and the comfort level of Medial arch decrease.Conclusion:The use of arch support inserts have a good role in mitigation in portion especially the metatarsal pressure for women that often wear high heels.There is some reference value in prevention and treatment of foot disease which caused by excessive plantar pressure.and the arch support inserts is more appropriate for the group of often wear high heels. The use of the arch support inserts can reduces the excessive partial pressure of lateral heel,there are some improvement on foot inversion phenomenon occurs frequently in often wear high heels.The arch support inserts are more suitable for women who often wear high heels,and the low arch height is better,since that the average plantar significantly smaller after wearing shoes with low arch height arch support inserts.While plantar pressure comfort questionnaire conclusions show that the use of arch support inserts reduces the comfort of medial arch, but has greatly improved forefoot comfort, especially on metatarsal2-3.In terms of the impact on balance in two different arch support inserts.