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Development of Dietary Supplement for the Growth and Exercise Performance Improvement
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Seung Won Yoon, Eun Hee Jung, Dong Sik Yang, Hong Seok Lee, Yoo Sik Yoon
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Korean J Community Nutr 2003;8(3):349-355. Published online June 30, 2003
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 Abstract
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- We developed a dietary supplement using natural herbs and nutrients for the growth and exercise performance improvement. It called 50-22 supplement containing distilled extracts of natural herbs to remove bitterness and the addition of Vitamin B1, B6, Ca and xylitol. We investigated on the effect of 10-22 supplementation on the maximal exercise performance, IGF-1 (insulin like growth factor-1) concentration and antioxidant activity in SD rat model. In result, JR-22 supplement group was better than control group about 10% in exercise performance test and increased about 63% of IGF-1 concentration in blood. In addition, the oxidative damage induced by exercise was reduced by JR-22 supplementation. Therefore, we suggested that 50-22 supplementation enhanced effectively exercise performance and IGF-1 concentration and reduced to oxidative stress in muscles. Also, we analysed biochemical factors in blood for the safety of JR-22 supplement. We known that there is no change of blood lactic acid, ammonia, inorganic phosphorous ion and creatine kinase activity.
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Study of the Difference in Body Composition, Eating Habits and Dietary Intake in Three Sasang Constitutions among Elementary School Children
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Jeong Mi Hong, Yoo Sik Yoon, Sun Mi Choi
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Korean J Community Nutr 2002;7(1):67-75. Published online February 28, 2002
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Abstract
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- The purpose of this study was to investigate the difference of body composition, eating habits and dietary intake in three Sasang constitutions. This survey was carried out using anthropometry, a questionnaire about eating habits, and 24-hour recall of dietary intake on 45 male and 29 female students of the fifth grade at C elementary school. The results are summarized as follows: A total of 44.6% of the subjects were Taeumin, 35.1% were Soyangin, and 20.3% were Soeumin. The average weight, WHR, Triceps, Rhrer index and BMI in the Taeumin group were significantly higher than those of the Soeumin and Soyangin groups. The body fat mass (kg) and abdominal fat (%) in the Taeumin group were significantly higher than those of the Soeumin and Soyangin groups. The soft body mass (%) in the Soeumin group was significantly higher than that of the Soeumi and Soyangin groups. The Taeumin's energy expenditure in physical activities was little high than that of the Soyangin and Soeumin groups, but the Soyangin's energy expenditure in physical activities per weight was a little higher than that of the Taeumin and Soeumin groups. The calorie and most of the nutrient intake were lower than those of Korean RDA. In the case of males, most nutrient intake, except for fiber, carotene and vitamin C were high in the Taeumin. For females, most nutrient intake, except for calcium and retinol were significantly higher in the Taeumin group. Conclusively, anthropometry characteristics, body composition, energy expenditure in physical activities, eating habits and dietary intake are different among the three Sasang constitutions. This study suggests the possibility of using Sasang consitutions as a basis for providing nutritional education and health guidelines.
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