신발 미드솔 폼 경도 차이에 따른 보행 시 압력분포 연구 :A Study on the Pressure Distribution during Walking by Shoe Midsole Foam Hardness Difference

심영주

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자료유형: 학위논문

저자정보: 심영주 (동의대학교, 동의대학교 대학원)

지도교수: 김유창

발행연도: 2020

저작권: 동의대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (2)

2020

신발 미드솔 폼 경도 차이에 따른 보행 시 압력분포 연구

심영주 화학·환경·산업공학과 2020.01 학위논문

2019

신발의 미드솔 폼(FOAM) 경도 차이에 따른 보행 시 압력분포 연구

심영주 , 김유창 대한인간공학회 학술대회논문집 2019.10 학술대회자료

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본 연구는 경도가 다른 미드솔 폼에 대하여 주관적 착화 설문 조사와 보행 실험을 통해 족부의 압력분포 데이터를 조사하여 경도별 미드솔이 발에 미치는 영향을 통계적으로 알아보고자 한다.
실험은 보행에 이상이 없는 20대 남성 7명을 대상으로 진행하였으며 실험에 사용된 신발은 Asker C 타입의 35도, 45도, 50도 경도로 미드솔을 만들었다. 주관적 착화 설문 항목은 착화감, 쿠셔닝, 반발력, 안정성으로 설정하였고 보행 실험은Zebris Medical GmbH사의 PDM-SX 분석기로 최대족저 압력과 최대 힘, COP(Center of Pressure) 이동길이를 분석하였다. 설문과 실험에서 분석 부위는 발바닥 전체와 전족부, 중족부, 후족부로 분류하였다. 경도별 측정 분석은 Minitab 19를 활용하여 일원 분산분석(ANOVA)으로 유의성을 평가하였다.
설문 조사는 발바닥 전체와 후족부에서 통계적으로 유의하다고 나타났다. 경도 35도가 설문 항목 모두 좋다고 나타났다. 특히 쿠셔닝은 경도가 낮을수록 좋은 것으로 나타났다. 최대족저압력은 모든 족부 부위에서 통게적으로 유의하다고 나타났다. 경도가 낮을수록 압력 값이 낮아져 낮은 경도의 미드솔이 압력분산을 시켜주고 발의 부하를 경감시켜줄 수 있는 것으로 분석된다. 최대 힘은 중족부, 후족부에서 통계적으로 유의하다고 나타났다. 중족부에서 경도가 높아질수록 최대 힘이 높아졌다. 이는 맨발보다 신발을 신었을 때 족부 전체로 힘이 분산되는 것으로 판단된다. COP 이동길이는 경도가 높을수록 길어지는 것으로 나타나 보행 시 후족부에서 발가락까지 지면에 접지가 되는 것으로 볼 수 있다. 이는 경도가 높을수록 안정적인 보행이 되는 것으로 판단되어 진다. 이와 같은 연구를 통해 경도가 다른 미드솔 폼의 변수를 분석하여 후속연구가 될 수 있는 기초자료를 제공할 수 있을 것으로 예상한다.

The purpose of this study is to investigate the effect of midsole on the foot by examining the pressure distribution data of foot by surveying and walking test on midsole foam with different hardness.
The experiment was conducted on seven men in their twenties who had no abnormal walking. The shoes used in the experiment were made with midsole at a hardness of 35 degrees, 45 degrees and 50 degrees of the Asker C type. The survey was set up into four categories: fit, cushioning, elasticity, and stability. The walking experiment was performed by the PDM-SX analyzer of Zebris Medical GmbH to analyze the maximum pressure, maximum force and COP (Center of pressure) movement length. In the survey and experiment the analysis part was classified into the whole sole, forefoot, midfoot and rearfoot Measurement variables by hardness were assessed for significance with a one-way ANOVA using Minitab 19 program.
The results of the survey showed that the whole sole and the rearfoot were statistically significant; 35 degrees was good for all the survey items; especially, the lower the hardness the better. Maximum plantar pressure was found to be statistically significant in all foot areas. It is analyzed that the lower the hardness the lower the pressure value so that the lower hardness midsole can distribute the pressure and reduce the load on the foot. The maximum force was found to be statistically significant in the midfoot and rearfoot. The higher the hardness in the midfoot the higher the maximum force. This is judged to be the dispersion of power throughout the sole when wearing shoes rather than bare feet. The longer the hardness the longer the COP movement length is so that the ground can be grounded from the toefoot to the toe during walking. It is judged that the higher the hardness the more stable walking. It is expected that this study will provide the basic data for subsequent studies by analyzing variables of midsole foams with different hardness.

목 차 . ⅲ
표 목 차 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ⅵ
그림목차. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ⅷ
Ⅰ. 서론 ···································································································· 1
1. 연구 배경········································································································· 1
2. 연구의 필요성 ································································································· 5
3. 연구 목적········································································································· 5
Ⅱ. 이론적 배경 ······················································································ 7
1. 발의 구조········································································································· 7
2. 보행(Walking) ······························································································· 9
3. 신발의 기초이론··························································································· 11
1) 신발의 구조······························································································· 11
4. 중창의 중요성 ······························································································· 16
1) 충격 흡수(쿠셔닝) ··················································································· 17
2) 발의 안정성······························································································· 17
5. 족저압력(Plantar Foot Pressure) ··························································· 18
6. 중창(Midsole) 및 족저압력 관련된 선행연구 ······································ 19
Ⅲ. 실험 방법 ························································································ 25
1. 실험 개요······································································································· 25
2. 연구 대상······································································································· 26
3. 실험 측정 ····································································································· 27
1) 미드솔 폼(Midsole Foam) ····································································· 27
2) 족저압력 실험도구··················································································· 28
3) 최대족저압력 및 최대 힘 측정 ··························································· 30
4) COP(Center of Pressure) 이동길이 분석 ·········································· 32
5) 족역 구분(Plantar Foot Region) ·························································· 33
4. 실험 절차 ····································································································· 35
1) 실험변수 설계··························································································· 35
2) 주관적 착화 설문조사 평가··································································· 36
3) 보행실험 방법··························································································· 38
5. 실험 제한점··································································································· 40
Ⅳ. 실험 결과 및 분석 ······································································· 41
1. 주관적 착화 설문조사················································································· 41
1) 착화감 분석결과 ······················································································· 41
2) 쿠셔닝 분석결과 ······················································································· 44
3) 반발력 분석결과 ······················································································· 46
4) 안정성 분석결과 ······················································································· 48
2. 보행실험 분석 ······························································································· 50
1) 최대족저압력(N/㎠) 분석결과 ································································ 50
2) 최대 힘(N) 분석결과·············································································· 54
3) COP(Center of Pressure) 이동길이(mm) 분석결과························ 58
Ⅴ. 결론 및 향후 연구 방향 ····························································· 60
1. 결론 ················································································································· 60
1) 착화감 ········································································································· 60
2) 쿠셔닝 ··········································································································· 60
3) 반발력 ········································································································· 61
4) 안정성 ········································································································· 61
5) 최대족저압력(N/㎠) ·················································································· 62
6) 최대 힘(N) ································································································ 62
7) COP(Center of pressure) 이동길이(mm) ··········································· 62
2. 향후 연구 방향····························································································· 64
부 록 ···························································································· 65
참 고 문 헌 ··························································································· 66
Abstract ································································································· 71

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