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사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록·키워드
Objective: The aim of this study was to investigate the changes in ground reaction force and long term comfort by wearing hardness modified insole on the areas of fore-foot and rear-foot during walking.
Background: Proper adjustment of hardness of the insole based on the function of the foot during walking would be beneficial for reducing the magnitude of the impact and improving comfort perception. Furthermore, investigating the effect of hardness modified insole on the levels of comfort during long-term comfort test may be necessary for further application.
Method: Seventeen healthy male adults (age: 22.9±1.8 years, body weight: 73.1±8.0㎏, height: 174.9±3.7㎝) participated in the walking experiment and five healthy male adults from walking test (age: 29.4±5.2 years, body weight: 79.0±6.7㎏, height: 175.2±1.8㎝) participated in the long-term comfort test. Four insole conditions (hard hardness insole, [HI], medium hardness insole, [MI], low hardness insole, [LI], and basic insole, [BI]) in a 270㎜ walking shoe were applied to conduct the test. The data was collected during walking at a speed of 1.3㎧ and 1.7㎧ on an instrumented treadmill (Bertec, USA). Ground reaction force variables were the vertical impulse (VIM), vertical impact force (VIF), peak vertical ground reaction force (PVGRF), vertical loading rate (VLR), braking impulse (BIM), and propulsion impulse (PIM). Comfort variables were the width, cushioning, comfort, and foreignness.
Results: The VIM and PVGRF were greater for the hardness modified insole (HI, MI & LI) compared with the BI during walking of 1.7㎧ (p＜.05). The VIF and VLR were statistically smaller for the hardness modified insole (HI, MI & LI) compared with the BI during walking of 1.3㎧ and 1.7㎧ (p＜.05). The PIM was greater for the hardness modified insole (HI, MI & LI) compared with the BI during walking of 1.3㎧ and 1.7㎧ (p＜.05). The overall cushioning was statistically greater for the hardness modified insole (MI & LI) compared with the BI.
Conclusion: It was concluded that the hardness modified insole (HI, MI & LI) on the area of fore-foot and rear-foot may be more effective in the impact absorption and the propulsion compared with the BI during walking.
Application: It is necessary to apply modified hardness of the insole to various sports movements. Future study would be warrant to consider different hardness and height in the area of arch support for a better stability and the comfort of lower extremities.
Background: Proper adjustment of hardness of the insole based on the function of the foot during walking would be beneficial for reducing the magnitude of the impact and improving comfort perception. Furthermore, investigating the effect of hardness modified insole on the levels of comfort during long-term comfort test may be necessary for further application.
Method: Seventeen healthy male adults (age: 22.9±1.8 years, body weight: 73.1±8.0㎏, height: 174.9±3.7㎝) participated in the walking experiment and five healthy male adults from walking test (age: 29.4±5.2 years, body weight: 79.0±6.7㎏, height: 175.2±1.8㎝) participated in the long-term comfort test. Four insole conditions (hard hardness insole, [HI], medium hardness insole, [MI], low hardness insole, [LI], and basic insole, [BI]) in a 270㎜ walking shoe were applied to conduct the test. The data was collected during walking at a speed of 1.3㎧ and 1.7㎧ on an instrumented treadmill (Bertec, USA). Ground reaction force variables were the vertical impulse (VIM), vertical impact force (VIF), peak vertical ground reaction force (PVGRF), vertical loading rate (VLR), braking impulse (BIM), and propulsion impulse (PIM). Comfort variables were the width, cushioning, comfort, and foreignness.
Results: The VIM and PVGRF were greater for the hardness modified insole (HI, MI & LI) compared with the BI during walking of 1.7㎧ (p＜.05). The VIF and VLR were statistically smaller for the hardness modified insole (HI, MI & LI) compared with the BI during walking of 1.3㎧ and 1.7㎧ (p＜.05). The PIM was greater for the hardness modified insole (HI, MI & LI) compared with the BI during walking of 1.3㎧ and 1.7㎧ (p＜.05). The overall cushioning was statistically greater for the hardness modified insole (MI & LI) compared with the BI.
Conclusion: It was concluded that the hardness modified insole (HI, MI & LI) on the area of fore-foot and rear-foot may be more effective in the impact absorption and the propulsion compared with the BI during walking.
Application: It is necessary to apply modified hardness of the insole to various sports movements. Future study would be warrant to consider different hardness and height in the area of arch support for a better stability and the comfort of lower extremities.
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