ブックタイトル教育医学 J.Educ.Health Sci. 第63巻 第2号 通巻 第288号

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教育医学 J.Educ.Health Sci. 第63巻 第2号 通巻 第288号

The Relationship between Planter Arch and Motor Ability in Children Aged 0 to 12and development in childhood. Two dimensions ofmotor ability were evaluated in this study: locomotorand object control skill. They are important factorsin determining motor ability performance 22) . Ourassessment of motor ability includes the twoelements, which serves as a reliable and validmethod for assessment of motor ability of childrenin field-based tasks 22) . In theory, Tudor et al.explained the association between plantar archesand motor performance: motor ability involving thelower legs activates a closed kinetic chain, with thefeet being the terminal part of that chain 20) . If flatfeet are related to the malfunction of the lower legsand to a possible risk of sport injury, then theyshould influence the motor ability originating fromthe activity of the leg muscles 18) . Lin et al. reportedthat flat feet are correlated with poor physicalperformance among preschool children, ranging inage from 2 to 6 11) . On the contrary, Tudor et al.reported that children, whether they have flat feet ornot, were equally successful in accomplishingmotor skills or athletic performance duringlaboratory tasks 6) . Furthermore, other literaturereported that no correlation had been found betweenathletes and non-athletes, whether they had flat feetor normal feet 9) .Such studies are unclear about whether plantararches develop during the first 12 years of life,whether the development differs depending ongenders, and whether there is any positiveassociation between plantar surfaces and motorability in childhood. Therefore, the purposes of thisstudy were to determine the development of plantararches in children aged 0 to 12, and also to determinethe relationship between planter arches and motorability after age 4 in each gender and at the twogeneral phases of preschool and school ages.from age 0 to 6 were classified as preschoolers, anddivided according to age by half a year. Childrenaged 7 and older were classified as schoolchildren,and were divided by each year. The purposes ofthe study and the procedures were explained to theparticipants and their parents, and informed consentwas obtained from them. With the informed consentprovided by the parents or guardians, the researchwas approved by Osaka Seikei University HumanEthics Research Committee.2.AnthropometryThe subjects wore light clothing, and werebarefoot when their height, weight and footlength of their right foot were measured. Figure 1illustrated foot size measurement. The subjects puttheir right barefoot on this measuring device as theywere seated, and we measured their foot sizes bythe 0.5cm units.Figure 1 Measurement of foot lengthⅡ.Method1.ParticipantsThe participants were 6802 healthy children(3491 boys and 3311 girls) aged 0-12. Children3.Plantar arch assessmentThe plantar arches of the subjects were scannedwith a Pedoscope (Sakamoto & Co.,Ltd. Patellaresearch, Japan). Yamada et al. reported therelationship between footprint and foot structure? 168 ?