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경사도에 따른 트레드밀 훈련이 발달지연 아동의 보행 및 운동 기능에 미치는 영향
최대원,최우성,최종덕 한국신경근육물리치료학회(구 한국신경근육재활학회) 2021 한국신경근육재활학회지 Vol.11 No.2
The purpose of this study was to investigate effects of inclination treadmill training on gait and gross motor function in children with developmental delay. In this study, a total of 12 developmental delay children was randomly assigned to: the 10° inclination treadmill training group, the 0° inclination treadmill training group. GMFM and K-PBS were used to evaluate the subject’s to gross motor function. In order to evaluate the subject’s walking ability, a walking analysis was conducted via GAITRite system. The intervention was performed 3 times a week for 3 weeks. Each session lasted 20 minutes. The experimental group conducted 10° inclination treadmill training, and the control group conducted 0° inclination treadmill training. The results of this study confirmed that 10° inclination treadmill training was effective in improving gait and gross motor function in developmental delay children. Therefore, 10° inclination treadmill training can be used as an effective interventional method in physical therapy developmental delay to improve gait and gross motor function in children with developmental delay.
16주간 트레드밀 운동이 흡연 청소년의 혈관내피세포기능 및 혈청 Ferritin 농도에 미치는 영향
최대원,윤진환,정성환,김상배 한국생활환경학회 2013 한국생활환경학회지 Vol.20 No.5
The purpose of this study was to evaluation the effects of 16 weeks treadmill exercise program participation on endothelial function and plasma ferritin levels in adolescent smokers. Thirty-three adolescent smokers were randomly assigned to control groups(CG, N=17), treadmill exercise groups(EG, N=16). treadmill exercise was performed 4 times a week at the intensity of 50-80% HHR(1-4 weeks; 50% HRR, 5-8 weeks; 60% HRR, 9-12 weeks; 70% HRR and 13-16 weeks; 80% HRR). Endothelial Function, as defined by flow-mediated Vasodilation (FMD) of the brachial artery, and serum corboxyhemoglobin (COHb) were determined at pre exercise and at post exercise. The data from this study were analyzed using repeated measures two-way ANOVA. The following conclusions were obtained by comparing and analyzing the measurement value pre and post of 16 weeks exercise. In the changes of FMD, blood ferritin and COHb levels the exercise group was significantly improved more than control group and pre exercise data(p<.05). In conclusion, regularly aerobic exercise was effective in increasing endothelial function and reducing blood ferritin levels with COHb levels in adolescent smokers.
인공신경망을 이용한 타이어 FLAT SPOT 성능 예측 프로그램 개발
최대원(Daewon Choi),김형태(Hyoungtae Kim),김기현(Gihyun Kim),조명국(Myeongguk Cho) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Tire Flat Spot is due to a vehicle parked without moving for a in general, tire flat spot phenomenon will be disappeared when a driver have a tire rolled for a few minutes. Flat spot is a low harmonic phenomenon and primarily contributes to the third or fourth harmonics of tire run out. The tire non uniformity caused by a flat spot may induce noticeable vibrations in some vehicles during operation in the decay process. The magnitude and decay of a flat spot depends on many factors ? tire construction, material creep properties, tire radial load and time duration, inflation, tire and ambient temperatures, tire mileage, etc. This paper represents a prediction system that can Prediction the tire Flat-Spot in advance before making tire. The neural network algorithm of data-mining was applied for this Prediction program. This program will indicate tire design guide line to tire engineer correctively and quickly.