Research On Primary School Student Functional Shoes Based On Sports Biomechanics

As one of the essential accessories for every child in the process of growing up,whether the children's shoes are reasonable in their wearing cause children's foot problems,are especially important in the growth of children.The child's foot is in the process of growth and development.At this stage,whether the structure and materials of the children's shoes conform to the pattern of the foot shape will mean whether the shoes will bring foot problems to children in the future.Looking at the current children's shoes market,the vast majority of children's shoes are still designed according to adult shoes,and the unreasonable structure will lead to a series of children's foot diseases.Therefore,the design of children's shoes should not only pay attention to the style,but also from the perspective of children's foot development,children's shoes are truly suiTable for children's wear and it can protect children's foot health.This project aims to design an arch support insole that can gradually intervene in children with physiological flat feet for 6~9 years old,and it verify its function through sports biomechanical methods.On this basis,combined with the anti-torsion principle,the anti-torque components are designed and manufactured independently,and attached to the self-designed children's shoes.The physical-mechanical method is used to test and verify the anti-torque function of the shoes.Finally,a motion can be designed.Functional children's shoes stabilize the heel and reduce the risk of ankle sprain.The research content of the subject mainly includes the following points:(1)Research and analysis of children's shoes marketSeveral well-known children's functional shoes brands at home and abroad were selected for research,from the four levels of structural design,material application,functional design and cost price,the current status of existing children's functional shoes in the domestic market,the style performance and problems of children's shoes products were summarized.Differences with similar products at home and abroad and reasonable improvement ideas wereproposed.(2)Research and analysis of children's plantar pressureFoot length and foot width were measured on the footprints of 300 children aged 6~9 years.Sixteen children with mild flat feet and 8 children with normal feet were selected by cross-line method as the preliminary test samples.The arch height of 24 children was measured,and the data of the arch site pressure,peak pressure,percentage of forefoot,arch and heel contact area were collected by exercise biomechanical test.The collected data were analyzed and processed to compare the differences in physiological characteristics and developmental characteristics between the flat foot and the normal foot.(3)Structural design,production and materials of arch support insoleThrough literature review and market research,six kinds of foam materials with wide application,high cost performance and good performance in the market were selected as the materials to be tested in this experiment,and their hardness,resilience and shock absorption were tested respectively.The data were compared to identify three materials that met the research needs.Based on the height of the arch of the flat foot,the arch height of the arch support pad was determined,and the arch part was designed as a laminated structure in combination with the idea of step-by-step intervention;the heel was designed to increase the cushioning and shock absorption function as a composite structure.Material structure and test mats were made.(4)Design and production of anti-torsion structure and functional children's shoesWith the anti-torsion function literature at home and abroad as the theoretical support,the design and production of anti-twist components are completed from two aspects: structural design and material selection.Combining the results of previous market research,we designed and produced children's shoes suiTable for the daily wear of children of this age from the aspects of children's shoe structure design,shoe material selection and bottom part selection,and attached anti-torsion parts to the test shoes.A functional children's shoe with a sTable heel reduced risk of ankle sprain.(5)Verification of arch support ability and heel cushioning abilityThe verification test of this subject used the tracking test method.Firstly,80 children were collected for foot data,and 12 children with mild flat feet were selected for a 6-month arch support pad.6 samples were performed during the entire tracking process.The Novel-pedar insole-type plantar pressure test system was used.The peak pressure,peak pressure and contact area percentage of the arch were obtained in each test.Statistical analysis was used to compare the data to characterize the arch support pad.Whether to intervene in the flat foot;during the test,the peak pressure and peak pressure at the heel of the test child in the test insole and the common insole are simultaneously collected,and the data in each test was statistically compared to determine whether it plays a cushion effect.(6)Verification of anti-twist ability of shoesThe high-speed rail GT-7011-PAC was used to make anti-torque equipment,and the two kinds of children's shoes with anti-torsion structure were tested.The test results showed that the torsion torque of the children's shoes with anti-twist structure was 10% higher than that of ordinary children's shoes.It shows that the children's functional shoes can protect children's ankles and reduce the rate of sprain.The conclusions of the study are summarized as follows:(1)The height of the arch of children with flat feet was 9~13 mm,and that of children with normal feet was 15~20mm.When walking naturally,there is a significant difference in the percentage of contact area between the flat feet and the normal feet and the total palm: the pressure at the flat arch is significantly greater than that of the normal feet,and the percentage of the total arch area of the arch is greater than that of the normal feet.The area of the forefoot and heel contact area is less than that of the normal feet.(2)The forefoot thickness of the arch support pad is determined to be 3 mm,the heel thickness is 5 mm,and the arch thickness is 9 mm.In addition to the base pad,two sheet structures with a thickness of 2 mm are separately designed and used in combination with the arch support pad to meet the flat foot children whose arch height are in the range of 9~13 mm,and the arch support pad is added to different feet.It is inclusive and a step-by-step intervention effect on flat feet.(3)A 6-month trial-and-wear tracking test showed that with the increase ofthe time of trial wear,the three indexes of the peak pressure at the arch,the peak pressure and the percentage of the arch contact area were significantly reduced,which indicated that the flat feet of the children had some extent reduced.The peak value of the heel pressure and the peak pressure of the test insole are significantly lower than those of the conventional insole,indicated that the shock absorption performance of the heel of the test insole is better.(4)The anti-twist test results show that compared with the conventional children's shoes,the torque of the children's shoes designed and developed by this subject has increased by 10%,which proves that the product can stabilize the heel to a certain extent and reduce the risk of ankle sprain.