• 운동영양학회지
• /
• 제25권3호
• /
• pp.36-43
• /
• 2021

[Purpose] Exercise is a key factor in preventing obesity and metabolic syndrome. Sumo wrestlers increase their body size from childhood for athletic advantage; however, the risk of metabolic syndrome in junior sumo wrestlers is undetermined. Preventive measures against pediatric obesity should be initiated during childhood to prevent obesity in adulthood, considering its high global incidence. We comparatively evaluated the risk factors for metabolic syndrome in junior sumo wrestlers and children with obesity. [Methods] We enrolled 70 male children (age 9-17 years [sumo group, n = 14] and 9-14 years [other sports and non-exercise groups, n = 28 each]) and evaluated their anthropometric parameters (height, weight, body mass index z-score, obesity rate, waist circumference, waist to height ratio) and hematological parameters (total, low-density, high-density, and non-high-density lipoprotein-cholesterol; triglycerides; plasma glucose, and glycated hemoglobin levels). [Results] The BMI z-score, obesity rate, waist circumference (p < 0.05, along with the non-exercise group), and systolic blood pressure were significantly higher and the high-density cholesterol level was lower in the sumo group than in the other sports group (p < 0.05). The waist to height ratio was significantly higher in the non-exercise group than in the other sports group (p < 0.05). No significant difference was found in other blood lipid, plasma glucose (significantly lower level than the reference range in the sumo group, p < 0.05), and glycated hemoglobin (within the reference range in all groups) levels among the three groups. [Conclusion] Junior sumo wrestlers had a larger body size and higher blood pressure than children with obesity who exercised regularly. This provides direction for future research into targeted preventive interventions against metabolic syndrome for junior sumo wrestlers with large body size.

• East Asian mathematical journal
• /
• 제7권1호
• /
• pp.79-86
• /
• 1991

• East Asian mathematical journal
• /
• 제8권2호
• /
• pp.117-127
• /
• 1992

• 대한수학회논문집
• /
• 제8권4호
• /
• pp.689-697
• /
• 1993

• 대한방사선기술학회지:방사선기술과학
• /
• 제17권2호
• /
• pp.57-68
• /
• 1994

We have been received questionnairs on the general characteristics and cognition of radiotechnological students, instruction which they hope, and the present processing actural states of instruction to 610 numbers of 2, 3 years radiotechnological students in korea. We have been perceived the actural states of radiotechnological instruction by the results of questionnaires, therefore, the imperfections of student's contentment, lack of instruction plan and audio-visual material's practical use, insufficient of study activities on instruction process, lack of clinical adaptation and practice of lecture evaluation were founded. We propose the solving method of these problems as the improvement of instruction. It is necessary for the will and effort of college and teacher to practices these problems.

• Human Ecology Research
• /
• 제52권4호
• /
• pp.415-427
• /
• 2014

The purpose of this study was to determine the effect of expenditure on private education and stress caused by private education on the parental efficacy of mothers of junior and senior high school students. The subjects were 300 mothers of students who were enrolled in the junior and senior high school in Seoul and its suburbs. The results were as follows: First, the level of stress from private education was found to be higher than the degree of parental efficacy. Second, a hierarchical regression analysis was performed by using expenditure on private education and stress caused by private education as independent variables and the socio-demographic characteristics of mothers as control variables in order to identify their effect on the parental efficacy of mothers of junior and senior high school students. The results show that stress from private education and monthly income were significantly related to parental efficacy. That is, the lower the level of stress from private education and the higher the monthly income, the higher was the degree of parental efficacy. These findings suggest that expenditure on private education seems to be determined by the household income level; thus, income may affect psychological stress and parental efficacy of mothers with respect to the process of providing private education.

• 대한치과기공학회지
• /
• 제9권1호
• /
• pp.57-65
• /
• 1987

In order to ascertain the aspects of the dental technicians training system which require improvement, and also to provide important data for use in setting up dental technicians manpower planning, our country's dental technicians training and employment status has been studied and analyzed. The objects of the survey are 2,315 dental technicians, the total number of persons licensed by The Ministry of Health and Social Affairs from 1965 to 1986. The results were as follows: 1. Education organs for dental technicians are education system such as health junior college and service training systems and 1,706 technicians have come from health junior college in our country. 2. Total number of employment of dental technicians employed in our country are, 1,541 and 406 of them are engaged in Seoul. So unbalanced employment of dental technicians will be troubled in a future. 3. All registrated to government are 4,847 till 1986, and 1,541 of them engaged are that is, we can suppose about employment of dental technicians in a future, 12,231 dental technicians will registrate to Health and Social Administration on 1996 and 3,530 of them will be able to take their job in Korea.

• 대한방사선기술학회지:방사선기술과학
• /
• 제10권1호
• /
• pp.31-35
• /
• 1987

Authors have investigated actual conditions of 22 hospitals throughout the Seoul district to evaluate of chest radiographic systems. The results are as followed: 1. Concerning exposure factors, most hospitals have used low tube voltage, merely two hospitals high tube voltage, that is, over 120 kVp. Roughly halves of intensifying screens have been used in hospitals were medium speed screens, and the rests were high speed screens. 2, Surface doses existed within wide range of $10{\sim}63.5mR$, and image quality value were $5.60{\sim}7.49$. 3. The minimum perceptibility of Burger Phantom have been increased with contrast improvement.

• 대한방사선기술학회지:방사선기술과학
• /
• 제5권1호
• /
• pp.15-19
• /
• 1982

Authors made an experiment to know the relation of surface doses and multiple factors of exposure by using grids, fields, tube voltages objects and distances and obtained the results as follows: 1. Surface doses were increased in proportion to the thickness of objects. 2. Surface doses were more influenced when irradiated fields were small and tube voltages were low. 3. Surface doses were a logarthmic proportion to the focus-object distance. 4. Multiple factors of exposure by using grid were under the control of the thickness of objects, irradiated fields and tube voltages but the relation of them were not fixed.

• 대한방사선기술학회지:방사선기술과학
• /
• 제8권2호
• /
• pp.15-19
• /
• 1985

The seattered-ray have a bad effect to the image of x-ray film. Therefore, to obtain the better x-ray image, the most important point is to eliminate the scattered-ray, come from the patient, and the easiest method to eliminate the scattered-ray is to use a proper grid for tube voltages. Authors made an experiment on the scattered-ray contents and the image quality in skull radiography, and obtained the results as follows; 1. The scattered-ray content in skull radiography was 83%, but it could be reduced to 35%-50% by using grid. 2. The image contrast was most increased when the using grid ratio was 8:1. 3. The image quality was not influenced by the scattered-ray contents between 32% and 45%.