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논문 기본 정보

자료유형
학술저널
저자정보
정명철 (아주대학교) 모승민 (순천제일대학교)
저널정보
대한산업공학회 대한산업공학회지 대한산업공학회지 제43권 제4호
발행연도
2017.8
수록면
248 - 254 (7page)
DOI
10.7232/JKIIE.2017.43.4.248

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초록· 키워드

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Industrial grating has been widely used the work surface of manufacturing, plants, and shipyards due to excellent drainage and durability. The purpose of this study is to evaluate the localized muscle fatigue in lower limb by the grating type during walking. Six subjects were male industrial workers who participated in this study. This study considered four independent variables which were grating type, bar type, spacing and muscle. Surface electromyography signals from tibialis anterior (TA), peroneus longus (PL), gastronemius medialis (GM), and gastrocnemius lateralis (GL) were recorded to determine muscle fatigue. To assess fatigue, mean power frequency (MPF) drop rate of each experimental condition was obtained by using initial MPF (the initial 10 second) and last MPF (the last 10 second) and defined by percent decrease. As a results of Friedman test, grating type showed statistically significant difference (p = 0.0317). The MPF drop rate of steel grating analyzed significantly higher 1.5%p than top grating. There were not significantly differences in bar type (p = 0.0758), spacing (p = 0.7630), and muscle (p = 0.2803). It means that top grating evaluated low muscle fatigue than steel grating. That is why top grating should be not only having higher walking stability but also psychological safety due to a firmly structure and less exposed under grating. This study could be recommended to ergonomic work surface by grating to improve walking stability and safety.

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