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The purpose of this study was to identify the relation between the aerobic power and the risk for cardiovascular disease in middle-aged men. The subjects of this study were 30 males with age range 50-59. The % body fat was calculated from the skinfold thickness of the chest, abdomen, and thigh. The risk factors for cardiovascular disease were serum TC, TG, HDL-C, SBP, and DBP. Variables of cardiopulmonary function were VO₂max, VEmax, HRmax, and Exercise times. The results were summarized as follwos : 1. There was significant correlation between the systolic blood pressures and the skinfold thickness of the chest, abdomen(P<.05). Also, there was significant correlation between the diastolic blood pressures and the skinfold thickness of the abdomen(P<.05). But, there was not significant correlation between the blood pressure and the % body fat (P<.05). 2. There was significant correlation between the exercise times and the % body fat calculated from the skinfold thickness of the chest, abdomen, thigh (P<.05). But, there was not significant correlation between the other cardiopulmonary functions and the % body fat from the skinfold thickness of three sites (P<.05). 3. There was significant correlation between the exercise times and serum TG levels (P<.05). But, there was not significant correlation between the other cardiopulmonary functions and the concentrations of the other blood lipids components (P<.05). 4. The was not significant correlation between the aerobic power and the blood pressures (P<.05). Probably, the relation among the % body fat, the cardiopulmonary capacity, and cardiovascular risk factors may be different from the aged groups. Also, these relationships may be affected by the exercise habits.
The aim of this study was to investigate the associations between a regular physical activity and cardiovascular risk factors. All participants were the residents of the City of Seoul, Korea. One hundred six healthy men, aged between 40 and 49 years old, were divided into two groups: those who participated in physical activities of endurance type such as mountain hiking, jogging, and swimming at least for the last six months (Group I : n=47, 44.2±3.0 yrs), and who were in the sedentary life style (Group II; n=59, 45.4±2.9 yrs). The physical activity level was estimated by a questionnaire. Anthropometry and cardiovascular risk factors including blood pressure, serum lipid levels were measured. Cardiovascular fitness level was measured by a progressive exercise stress test. And the result were as follows: 1. There was no significant difference in the height between two groups. However, percent body fat (%BF) of Group II was higher than Group I (P<0.001). 2. Blood pressure (BP) of Group II was higher than Group I. Especially, there was significant difference in the diastolic blood pressure between two groups (p<0.01). 3. There was no significant difference in the total cholesterol concentration between two groups. Triglycerides concentration in Group II was higher than Group I (p<0.01). However, HDL-cholesterol concentration and HDL-cholesterol/Total-cholesterol ration in Group I was higher than Group II (p<0.001). 4. Maximal oxygen uptakes (VO_2max) in Group I was higher than Group II (p<0.001). 5. %BF, BP, and triglycerides in Group I was higher than Group I. However, HDL-cholesterol concentration. HDL-cholesterol/Total-cholesterol ratio, and VO_2max in Group I showed higher than Group II. There were no significant relationships among total cholesterol concentration, anthropometry, PB, and cardiovascular fitness. The results suggest that regular physical activities have modified favorably in a decrement of cardiovascular risk factors such as %^BF, BP, and triglycerides and in an increment of HDL-cholesterol, HDL-cholesterol/Total-cholesterol ration. and VO_2max. Experimental studies demonstration a long-term effect of a regular physical activity on cardiovascular risk factors may be necessary.
The purpose of this study was to evaluate the knee extensor and flexor in female ballet dancers. Twelve female ballet dancers and nine female students were examined for isokinetic muscular function tests. The results were summarized as follows. 1. Height, Weight, and age were not significantly different between the ballet dancers and the students. But, the ballet dancers had a lower BMI, WHR, and % body fat than the students. And these measurements were signnficantly different two groups. 2. The ballet dancers had a higher peak torque and peak torque to body weight of knee extension with left and right leg than the students. And these measurements were significantly different between two groups. On the other hand, peak torque and peak torque to body weight of knee flexion with left and right leg were not significantly different between two groups. 3. The ballet dancers had a higher total work and endurance ratios of the quadriceps and the hamstring with left and right leg than the students. But these measurements were not signficantly different between two groups except for total work of right knee extension and the endurance ratios of the hamstring/quadriceps of left knee. These isokinetic characteristics of the knee extensor and flexor in female ballet dancers were probably due to the unbalanced dance training . And, these data show that female ballet dancers require physical fitness training program.
기존 상업용빌딩은 실내 시환경 개선의 필요성이 중시됨에 따라서 자연채광과 인공조명을 겸용하는 천장형태에 따른 조명제어 방법으로 전기에너지도 절약하면서 실내의 작업면 조도는 적정조도를 이루게 하는 방안을 찾고자 한다. 이에 본 논문에서는 창 유리의 종류와 실내의 마감색채, 천장타입에 따른 인공조명의 제어방법을 가지고 실험을 하였으며, 실험한 데이터는 실내의 조명설계시 참고할 수 있는 기초적 자료로 제시하고자 했다. It is very important and necessary to predict luminous enviroment in an interior space. This paper has described about energy saving and evaluated interior visual environment in a office building having on/off turning control lighting system utilizing daylight. In order to predict the interior varior illumination distribution, the scale model was made and examined under various conditions, such ad difference of window glass, and color pattern of wall, floor, and also ceiling lighting system type. This paper suggests that basic fundamental data of lighting design performance in the concept and schematic stages of design.