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부진후,이동춘,Bu, Jin-Hu,Lee, Dong-Chun 대한인간공학회 2001 大韓人間工學會誌 Vol.20 No.1
Rearfoot control can be defined as the relative ability of a shoe to limit the amount of subtalar joint pronation immediately following footstrike. A normal amount of pronation provides a means of decreasing peak forces experienced by the leg, but excessive pronation of the foot can be arised its injures. The purpose of this study is to compare amount of pronation according to a difference between medial and later hardness of shoe midsole for better design of running shops. The experiment is examined for 7 running shoes. 8 males. to measure the Achilles tendon angle and rearfoot angle using high speed camera. The results is conducted that the changes of Achilles tendon angle significantly differ at each test shoe with increased running speed. And, a difference between medial and lateral hardness of midsole affects rearfoot motion of runner. The displacements of maximal Achilles tendon angle described a amount of pronation motion is decreased when medial hardness of midsole is large more than lateral.
부진후,이동춘 동아대학교 생산기술연구소 2002 生産技術硏究所硏究論文集 Vol.7 No.2
The impact shock occurred at heel during running is transmitted to head through body. It acts one of body loads and is important factor which cause injuries on joint, tendon and ligament by recurring stance. This study is conducted characteristics of body that impact shock is transmitted by measuring and comparing acceleration of shank and head with 5 running speeds and whether wearing footwear or not. The magnitude of acceleration on shank during wearing footwear is less than non-wearing, but it on head is not significant between wearing and non-wearing in rapid speed. Also, the magnitude of acceleration on each segments is shown rapidly increasing with running speed increased. When wearing and non-wearing, the values of shank on 6.Om/s are respectively 3.4, 2.7 times than their of 3.Om/s, on head are 5.5, 3.3 times.
황규성,부진후 동의공업대학 1999 論文集 Vol.25 No.1
In considering a seated posture, the important object is to suspend the body weight and to preserve a status of whole body. The study was conducted the discomfort of muscle by physical characteristic of existed office chairs(A, B, C, T-type) using EMG, which is used one of objective evaluation method. The measured muscles are trapezoids, T10-latissimus dorsi, L3-latissimus dorsi, and semimembranous. According to results of experiment, a chair that was not designed fit gives more fatigue to w. ist muscle (L3-1atissimus dorsi) and leg muscle(semimembranous) than other.