• Journal of the Korean Society of Food Science and Nutrition
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• v.33 no.9
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• pp.1492-1500
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• 2004

The purpose of this study was to evaluate the effects of low calorie meal substitute and weight control preparation containing dietary fibers, ${\alpha}$-amylase inhibitor and hydroxycitrate on the reduction of body weight and visceral fat in obese women. Sixteen pre-menoposal healthy women (age: 20∼50 y, body mass index >25) who were living in the Daejeon area participated in this study. We replaced one meal of the subject with low calorie meal substitute and fed the weight control preparation twice a day for 9 weeks. Anthropometric indices, body composition, dietary intake and stool movements were investigated every 3 weeks during the dietary intervention. The blood was collected before and after the dietary intervention. Results are as follows: 1) The subjects' body weight, body fat, BMI, waist, hip and abdominal adipose tissue decreased gradually and significantly between 3rd and 9th week after intervention. 2) The levels of fasting blood glucose, triglyceride and cholesterol, the indicators of liver dysfunction such as activities of ALT, AST and ALP, and bilirubin level were within a normal range and not affected significantly by dietary intervention. 3) Hemoglobin levels increased significantly and blood urea nitrogen level decreased. 4) Their stool movement was improved 5) Compared with the baseline values, calorie intake decreased by 17.5∼21.9% and the intakes of vitamin A, vitamin B2, folate, Ca, Fe, and Zn were below 80% of Korean RDA. In conclusion, the intake of low calorie meal substitute and weight control preparation could be effective in reduction of body weight and fat mass, improving the stool movement and the general physical symptoms.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.10 no.1
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• pp.47-57
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• 2016

In this paper, we measured human body signals in order to verify a active harness system that we developed for gait and balance training. The experimental procedure was validated by tests with 20 healthy male subjects. They conducted motions of Activities of Daily Living(ADL)(Normal Walking, Stand-to-Sit, Sit-to-Stand, Stair Walking Up, and Stair Walking Down) according to body weight support rates (0%, 30%, 50% of subjects' body weight). The effectiveness of the active harness system is verified by using the results of foot pressure distribution. In normal walking, the decrease of fore-foot pressure, lateral soleus muscle and biceps femoris muscle were remarkable. The result of stand-to-sit results motion indicated that the rear-foot pressure and tibialis anterior muscle activities exceptionally decreased according to body weight support. The stair walking down show the marked drop of fore-foot pressure and rectus femoris muscle activities. The sit-to-stand and stair walking up activities were inadequate about the effect of body weight support because the velocity of body weight support system was slower than male's activity.

• Journal of Nutrition and Health
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• v.50 no.4
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• pp.336-349
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• 2017

Purpose: The purposes of this study were to describe changes in weight, waist circumference (WC), and prevalence of obesity over 8 years as well as investigate demographic and dietary factors associated with weight gain in Korean adults. Methods: The Korean Genome and Epidemiology Study is an ongoing community-based longitudinal study, which was started in 2001~2002 and repeated every 2 years. Height, weight, and WC were measured, and demographic data and food intake information using the food frequency questionnaire were collected from 10,038 adults aged 40~69 years at baseline. Among those individuals, 3,506 healthy individuals without chronic diseases completed the 4th follow-up survey in 2009~2010. Results: Mean weight decreased by 0.35 kg and 0.65 kg in men and women, respectively, whereas mean WC increased by 1.71 cm and 1.85 cm during the 8-year period. Prevalence of obesity based on body mass index (BMI) decreased from 34.5% to 33.5% in men and from 38.0% to 36.7% in women, whereas abdominal obesity increased from 14.8% to 22.2% in men and from 28.8% to 35.4% in women. Weight change was associated with age and smoking status in men, and residence area, age, education, income, and alcohol drinking in women. Approximately 57.5% maintained their BMI over 8 years (<${\pm}1kg/m^2$, stable weight group), 19.5% showed a BMI increase of ${\geq}1kg/m^2$ (weight gain group), and 23.0% showed a BMI decrease of more than $1kg/m^2$ (weight loss group). There was no significant difference in energy intake calculated as the percentage of estimated energy requirements among the three weight change groups. Intakes of coffee mix and milk were significantly higher in the weight gain group than in the weight loss group in men after controlling for confounding factors. Conclusion: Our results show that higher consumption of coffee mix and milk was associated with weight gain in Korean healthy men.

• Journal of the Korean Society of Food Science and Nutrition
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• v.25 no.2
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• pp.214-224
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• 1996

본 연구는 비만아동을 위한 효과적인 운동 및 식이 요법에 관한 자료를 얻기 위하여 실시하였다. 대상자는 8~12세의 비만아동(체지방 $36.1\pm1.3%)과$ $정상아동(18.9\pm1.3%)$ 각각 5명이었으며 3일간 실험환경에 적응하기 위한 대조기간(Control : C)을 거친후 1주간은 운동은 부하하되 에너지는 제한하지 않는 운동기간(Exercise without energy deficit : EEN)와 다음 1주간은 비만아동만을 대상으로 운동부하와 동시에 에너지를 제한하는 에너지 제한 운동기간(Exercise with energy deficit : EED)으로 나누어 실시하였다. 운동강도는 60~75%HRmax이었으며 에너지 제한량은 493kcal/day이었다. 각 실험 조건별 대사에너지 섭취량, 체중, 체성분, 체내 보유 에너지, 에너지 소비량의 변화를 측정하였다. 체지방량은 생체 전기저항 지방측정기를 이용하여 측정하였다. 대변 및 소변으로의 에너지 손실량으로부터 측정한 1일 평균 대사 에너지량(ME)은 정상아동이 대조기간(C) 및 운동기간(EEN)별로 각각 $1802\pm50kcal$ 및 $1771\pm72kcal이었고$ 비만아동이 대조기간(C) 및 운동기간(EEN) 및 에너지 제한 운동기간(EED)별로 각각 $2152\pm138kcal,$ $1861\pm138kcal$ 및 $1368\pm87kcal이었다.$ 대조기간(C)에 비만 아동은 정상아동에 비해 대사에너지량(ME)이 높았으나 무지방조직(LBM) kg당 섭취량은 정상아동이 79kcal이며 비만아동이 70kcal로 오히려 비만아동의 경우가 낮았다. 대체로 운동에 의해 에너지 섭취량은 감소되었다. 동일한 운동 부하로 정상아동 및 비만아동의 체중은 각각 $1.00\pm0.20kg$ 및 $1.24\pm0.22kg씩$ 감소되어 정상아동에 비하여 비만아동의 체중감소가 더 많았다. 비만아동에서 에너지 제한(493kcal)으로 인한 체중감소량은 0.52kg이었고 체지방조직량(FM)은 0.46kg이었다. 운동기간(EEN)중 체성분 변동량으로부터 산출한 1일 1인당 체내 에너지 변동량은 정상아동이 1092kcal, 비만아동이 1270kcal 감소디어 비만아동의 에너지 소모량이 더 많았다. 비만아동에 있어 에너지제한 운동기간(EEN)에 정상아동이 $2863\pm58kcal,$ 비만아동이 $3131\pm158kcal이었으며,$ 에너지 제한 운동기간(EED)에 비만아동은 $3153\pm151kcal이었다.$ 이상의 성적으로 보아 본 실험에 적용한 운동 프로그램은 체중 감소에 효과적으로 작용하나 일부 부지방조직(LBM)의 감소를 동반하는 것으로 보아 다소 운동 부하량이 과도한 것으로 생각된다. 그러나 에너지 제한량(500kcal)은 체중감소에 매우 효율적인 것으로 평가되어 이후 비만아동의 체중조절에 본 실험의 에너지제한 운동 프로그램중 운동 부하량만을 다소 줄여 적용하면 매우 효과적일 것이라 생각된다.

• Journal of Life Science
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• v.12 no.6
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• pp.780-785
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• 2002

The purpose of this study is to investigate isokinetic strength changes of knee joint in accordance with short-term weight loss of wrestlers. For this purpose, 14 male wrestlers of a K technical high school in B city participated in our research. The wrestlers were divided into two groups; one group of the wrestlers didn't lose any weight, and the other lost over 5% of their weights. The isokinetic strength was also observed before and after weight loss. The isokinetic strenght test were processed at test speed of the$60^{\circ}C$/sec, $90^{\circ}C$/sec, and $250^{\circ}C$/sec with the CYBEX NORM system(Cybex 770＋TMS, USA). Peak torque, peak torque %BW, total work, total work %BW, and endurance ratio were measured. Results showed that the isokinetic strength after the short-term weight loss of wrestlers decreased meaningfully Although endurance ratio didn't show any meaningful difference in our research, but more accurate research may find out the relationship between short-term weight loss and the endurance ratio of isokinetic strength.

• The Journal of the Korea Contents Association
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• v.20 no.2
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• pp.472-477
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• 2020

The purpose of this study is to correct the error of lower weight input method as an alternative to reduce the specific absorption rate(SAR) in MRI. In order to prove that the SAR values not change according to the weight entered into the patient information, the 50kg phantom is placed in the coil and the input weight is changed from 10 to 100 in 10kg units to compare the SAR values. As a result, T1-weighted images had a SAR rate of 0.2W/kg and T2-weighted images had an average of 0.4W/kg. In conclusions, the SAR does not change according to the weight input by the technician before the scan, a lower weight when inputting patient information cannot be an alternative to reduce the SAR.

• Journal of the Korean Society of Food Science and Nutrition
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• v.34 no.9
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• pp.1381-1387
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• 2005

This study was intended to evaluate the weight control program for 18 obese female college students during 9 weeks. The weight control program was composed of periodical counsel for self-control of dietary attitude and exercise with personal/group program. The female college students were average 21.3 years old and average 161.8 cm of height. The subjects were classified into 2 groups based on BMI: overweight group $25\le{BMI}<27$, obese group BMI$\ge$27. The subjects were average 71.56 kg of weight and $27.25 kg/m^2$ of BMI before they joined the program. The prompt of joining was less self-confidence for appearance. After 9 weeks, the overweight group lost their weight about 3.28 kg and also reduced 1.61 percentage of body fat. The obese group also lost their weight about 3.0 kg but reduced only 0.8 percentage of body fat. The serum levels of total cholesterol and LDL-cholesterol dropped significantly (p<0.05) in the overweight group. The $VO_2$ max inclosed 2.71 mL/kg/min in the overweight group. The obese group reduced caloric intakes from $109.2\%\;to\;86.5\%$ of RDA. The scores of dietary attitude such as eating speed, snack frequency, watching TV or reading during the eating were significantly increased (p<0.05) in obese group. These overall results suggest this program would be effective in self-weight control of overweight people. But the obese group assumed negative attitude in self-exercise program. So it is necessary to manage weight control programs, as considering obesity degree of subjects.

• Proceedings of the Korea Fashion and Costume Design Association Conference
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• 2004.06a
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• pp.89-92
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• 2004

비만과 질병의 관계가 밝혀짐에 따라, 비만은 세계보건기구에서 정한 치료를 요하는 질병 중의 하나로 구분되고 있다. 비만의 치료는 과체중이 바람직한 체중으로 감소되고, 감소된 체중이 적어도 5년 동안 유지되는 것으로 정의하여, 이를 기준으로 보았을 때 비만에 대한 치료율은 암의 치유율 보다 낮아서, 비만의 완치가 얼마나 어려운지를 잘 말해주고 있다.(중략)

• Proceedings of the KSCN Conference
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• 2001.12a
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• pp.962.2-963
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• 2001

• Journal of Nutrition and Health
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• v.43 no.6
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• pp.607-619
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• 2010

The purpose of this study was to identify the concepts of body image, weight control and food behavior in 520 Korean high school seniors from Seoul and Gyeonggi Province. A questionnaire survey was conducted to investigate body image, concern of weight control, experience of weight control, the first time to try weight control, plan for weight control, reasons of weight control and food behaviors related with weight control. Anthropometric parameters such as weight and height were measured. Finally, data from 497 high school seniors were used for statistical analysis. The results were as follows. Many subjects had misperceptions. Among the subjects who perceived themselves as 'fat', 57.8% were normal weight and 0.5% underweight. Among the subjects who perceived themselves as 'thin', 59.5% were normal weight, 0.9% overweight and 0.9% obese. Girls were more concerned about weight control than boys (4.20 vs. 3.66). Weight loss had been experienced by 61.5% of the subjects and weight gain by 12.8%. First weight control was attempted by 71.3% of the subject at high school and by 28.7% at middle school. The majority of subjects planned for weight control before their freshman year. The boys choose 'health' as the primary reason for weight control, whereas the girls chose 'good appearance'. The total score of food behaviors varied significantly according to BMI. Overweight and obese subjects had more desirable food behaviors than normal weight and underweight subjects (24.00, 24.06 vs. 21.92, 21.52). However, total scores of food behaviors showed no variation according to sex, weight control attempt and body image. In conclusion, the high school seniors had misconceptions about body image and weight control. They were exposed to a high risk of inappropriate weight control and food behaviors. Therefore, proper nutritional education programs need to be developed for high school seniors to prevent nutrition problems related to weight control and to maintain desirable food behaviors.