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KMID : 1211620090040020079
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Journal of the Korean Society of Physical Medicine
2009 Volume.4 No. 2 p.79 ~ p.86
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Effect of Heel-heights of Insole on Balance in Healthy Adults
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Oh Myung-Hwa
Lee Jeon-Hyeong
Kwon Yoo-Jung
Lee Jong-Dae
Lee Myoung-Hee
Kim Kyung
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Abstract
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Purpose： The purpose of this study was to investigated the effect of stability on heel-heights of insole in healthy adults.
Methods： Subjects of 39 males measured stability index of the Biodex Stability System(BSS) by wearing shoes of 2cm, 5cm insoles including bare feet. The BSS was consisted of a movable balance platform and the platform was interfaced with computer software that enables the device to serve as an assessment of balance performance. Stability index of the BSS included overall stability index(OSI), anteroposterior stability index(APSI), mediolateral stability index(MLSI). In the BSS, subjects were asked to step on to the platform of the BSS and assume a comfortable position while maintaining slight flexion in the knees, looking straight ahead. Subjects were trained for 10min for adaptation to the heel-height of insole and then they maintained double limb stance for 2min. Biodex platform set to convert Lv.8 into Lv.1 gradually.
Results： There were statistically significant differences between heel-heights of insole and stability index of OSI, APSI, and MLSI(p<.05). The result of post-hoc test were as follows; 1)OSI had significant differences between bare feet and 2cm, 5cm. 2)APSI had significant differences between bare feet and 2cm, 5cm. 3)MLSI had significant differences between bare feet and 2cm, 5cm(p<.05).
Conclusions： We found that the more heels of insole high, the more stability index increases. In particular, balance index of insole above 5cm more increased and we could acknowledge that the insole above 5cm more effected balance of healthy adults.
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KEYWORD
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Stability index, Heel-heights of insole, Balance
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