• Journal of the Korea Convergence Society
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• v.11 no.5
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• pp.43-49
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• 2020

The purpose of this study was to determine whether PNF respiratory exercise increases the vital capacity and maximal voluntary volume of 20s normal adults by 45° leaning sitting position. Twenty normal adults in their 20s were randomly assigned to an experimental group and control group. Over the course of four weeks, the experimental group participated in PNF respiration exercises by 45° leaning position for 30 minutes three per week. And the control group participated in diaphragm respiration exercises by 45° leaning position for 30 minutes three times per week. Subjects were assessed post-test by measurement of vital capacity, maximal voluntary volume. Our findings show that the experimental group had significant improvements in vital capacity, maximal voluntary volume(p<.05). In this study, the experimental group showed more improvement in pulmonary function, which indicates that the PNF respiratory exercise by 45° leaning sitting position is effective at increasing the pulmonary function of normal adults.

• The Science & Technology
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• v.30 no.12 s.343
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• pp.30-31
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• 1997

지난 10월 20일~24일 미국의 서부 산호세에서 열린 미국진공학회 학술대회에 4명의 대학원생과 함께 참석하여 2편의 논문을 발표한 한양대 금속공학과 전형탁교수의 학술대회 참관기를 싣는다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.6
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• pp.592-602
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• 2020

This study examined the contribution of the risk factors that cause cardiovascular disease in Koreans. The subjects were 20,012 adults aged 30~74 years who were enrolled from the 2005~2013 Korean National Health and Nutrition Examination Survey, had filled the risk factors data, and had no cardiovascular disease history. Data analysis was conducted using SAS 9.3, and a weighted composite sample design analysis was performed. The contribution was obtained by applying a squared semi-partial correlation. As a result, they were higher in the order of age (63.9%), smoking (17.3%), systolic blood pressure (7.9%), diabetes (6.9%), antihypertensive medication use (3.0%), and BMI (0.9%) in men. In women, the contributions were in the order of age (54.1%), systolic blood pressure (23.5%), diabetes (13.6%), antihypertensive medication use (5.1%), smoking (3.1%), and BMI (0.6%%). According to age bracket analysis, smoking (51.8~33.7%) was the biggest risk factor, followed in order by age (26.6%) in their 30s and systolic blood pressure (17.3~21.0%) in those older than 40 years in men. In women, the systolic blood pressure (56.2~40.5%) was the main contributor to the risk factors, followed by age (24.0%) in their 30s and diabetes (13.6~32.6%) in those older than 40 years. The contribution of the income level was similar. Therefore, to prevent cardiovascular disease, various programs that reflect the contributions of the risk factors should be developed. Moreover, it is recommended to use the results shown in this study as basic data.

• Journal of the Korean Society of Costume
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• v.64 no.8
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• pp.1-19
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• 2014

The purpose of this study is to do an in-depth examination of Korean women in their 30's on the characteristics of their online fashion shopping, clothes-wearing, and presentation. In-depth interview and quantitative analysis were conducted as study methods. Results of this in-depth analysis showed that the factor with the most significant influence in their lifestyle was "childbirth." Childbirth was a major factor during fashion shopping and clothes-wearing. Also the results showed that the reason they used online shopping was for convenience, efficiency, rationality, pursuit of information, variety, and hedonism. In particular, women in their 30's had a higher motivation for efficiency and rationality compared to those in their 20's, and of those women, married working women showed the highest preference for fashion soho malls. Meanwhile, full-time homemakers, who pursued rationality, used open markets to search for fashion items based on price. Furthermore, the factors that women in their 30's considered during online shopping were price, design, purpose or situation for wearing the clothing, respectively. Compared to the women in their 20's, they emphasized recommendation, product properties, credibility, economy more than women in their 20's. Factors such as marriage and childbirth were more influential than occupation. Meanwhile, the factors that women in their 30's considered for wearing and presentation were time, place, and occasion(TPO), which all showed high importance in in-depth interview and quantitative analysis. Other factors were 'suitable image to self' and 'covering up body figure.'

• Journal of Preventive Medicine and Public Health
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• v.19 no.1 s.19
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• pp.45-55
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• 1986

It is well known that Korea is one of the endemic area for type B viral hepatitis. A screening test for HBsAg by RPHA method was performed to evaluate the prevalence of HBsAg among urban, rural and coastal area population during the period between Jan. 1985 and Aug. 1985. The results obtained are as follows; 1) The HBsAg was detected in 242 among 2,849 with positive rate of 8.49%. The positive rate by sex showed higher rate in males(9.07%) than females(6.79%) for HBsAg. But these differences by sen were not statistically significant. 2) By living area, the positivity of HBsAg was 8.67% in urban, 7.43% in rural and 8.37% in coastal area. But the differences were not statistically significant. 3) The positivity differences of HBsAg were significantly observed between male(9.26%) and female(6.44%) in urban area. But there was not in rural and coastal area. 4) The positivity was the highest in 4th decade in urban area. But 6th decade in rural and 4th and 5th decade in coastal area. Generally the positivity of HBsAg was more prevalent in young age and decreasing by the age increasing in the male. But in the female it was most common in 6th decade. 5) Elevated SGOT(>40 Unit) was significantly higher in HBsAg positive group(13.6%) than in HBsAg negative group(3.4%).

• The Korean Journal of Food And Nutrition
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• v.33 no.3
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• pp.237-250
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• 2020

In this study, the Korea National Health and Nutrition Examination Survey in 2016 examined the nutrient and food intake of women in their 20s and 30s according to the number of meals a day, and the results were as follows: The study included 256 women in their 20s and 474 women in their 30s. Women in their 20s and 30s ate two meals a day, indicating that the notion of three meals a day was gradually changing to two to three meals a day. Those in their 20s and 30s who eat one, two or three meals a day were consuming less than the estimated energy requirement of the DRI for Koreans 2015. The vitamin A and C were eating less than the recommended intake in all meals. In the case of minerals, calcium was taken less than the recommended intake in all meals, but sodium was taken above the goal intake in all groups. Women in their 20s and 30s must reduce their intake of saturated fatty acids and sodium, and increase their intake of vitamins A, C, calcium, and potassium. Women in their 20s and 30s drank a lot of coffee, ate baechu-kimchi and rice frequently per week.

• Journal of the Korea Convergence Society
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• v.10 no.6
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• pp.95-101
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• 2019

The purpose of this study was to determine whether PNF respiratory convergence exercise increases the pulmonary function of normal adults by $45^{\circ}$ leaning sitting position. Twenty normal adults in their 20s were randomly assigned to an experimental group (n=10) or control group (n=10). Over the course of four weeks, the experimental group participated in PNF respiration exercises by $45^{\circ}$ leaning position for 30 minutes three per week. And the control group participated in PNF respiration exercises by supine position for 30 minutes three times per week. Subjects were assessed pre-test and post-test by measurement of pulmonary function. Our findings show that the experimental group had significant improvements in expiratoy reserve volume and vital capacity, maximal voluntary volume. In this study, the experimental group showed greater improvement in pulmonary function than the control group, which indicates that the PNF respiratory exercise by $45^{\circ}$ leaning sitting position is effective at increasing the pulmonary function of normal adults.

• Journal of the Korean Society of Costume
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• v.67 no.1
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• pp.95-109
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• 2017

The objectives of this study are to develop a cosmetic involvement scale focusing on Korean men in their 20s and 30s, verify its validity and examine the characteristics of this group. The results of this study's analyses showed that cosmetic involvement scale could be classified into 5 factors: 'trend & interest involvement', 'prestige sensitivity involvement', 'price and value involvement', 'skin involvement,' and 'obligatory involvement'. Also the cosmetic involvement of the target group was classified into 'amusing high-involvement group', 'rational low-involvement group', and 'obligatory high-involvement group'. This study has significance in showing differences of cosmetic involvement factors by gender and proposing a cosmetic involvement scale of Korean men in their 20s and 30s, which has taken men's distinctiveness into consideration.

• Proceedings of the Korea Society of Costume Conference
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• 2005.05a
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• pp.78-78
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• 2005

• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.12 s.138
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• pp.1632-1643
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• 2004

The competitiveness of the domestic cosmetics market will improve more rapidly when efficient market segmentation is secured, qualitative information about each of the segmented markets is gathered, and adequate marketing strategies to meet the demands of each segmented markets is established. Therefore, continuous studies are needed to secure qualitative information for market segmentation. In order to find out whether the domestic cosmetics market could be segmented according to consumers' shopping orientation, the present study analyzed cosmetics purchasing behavior, complaint behavior, and demographic characteristics of each consumer group classified according to their shopping orientation. The study was implemented by a normative-descriptive survey method using a questionnaire. Three groups of consumers were identified according to their shopping orientation: price-oriented group, information-oriented group, and brand-oriented group. It was confirmed that the groups, classified according to shopping orientation, have significantly different demographic, purchasing, and complaint behavior. Therefore, shopping orientation should be carefully considered in the segmentation of the cosmetics market.