• 보건세계
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• v.53 no.6 s.598
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• pp.50-51
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• 2006

40대에 들어서면 자신도 모르게 달라진 체력에 서글퍼진다. "어, 몸이 옛날 같지 않네" 체력하나 믿고 20~30대를 달려와 40대에 들어선 직장인들은 어느 날 갑자기 당뇨, 고혈압, 비만 진단을 받고 적잖이 놀라는 일이 많다. 건강에 적신호 켜진 40대의 건강관리, 과연 어떻게 하면 좋을까?

• Journal of Korean Ophthalmic Optics Society
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• v.17 no.3
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• pp.273-278
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• 2012

Purpose: Average of the maximum accommodation amplitude of myopia in different generation, early 20's and early 40's were compared according to gender, degree of myopia. Methods: Maximum amplitude of accommodation for each 100 patients of early 20's and 40's were measured with push-up method. Maximum amplitude of accommodation expectations based on Hofstetter formula were classified into three groups of under, normal and excess. Results: The average of amplitude of accommodation was 9.77~11.64 D $(10.77{\pm}2.49D)$ in early 20's and 4.67~6.21 D $(5.34{\pm}1.28D)$ in early 40's. In early 20's, minimum expectations of amplitude of accommodation for under, normal and excess groups were 20%, 75%, and 5%, repectively. In early 40's, excess and under groups were 5% and 18%, repectively, but there was no excess group. Conclusions: According to increasing age, amplitude of accommodation of both age groups showed decreased, and no significant difference was found in degree of myopia with gender. Difference between mean of expected accommodation amplitude and maximum of accommodation amplitude was compared, and it was found that maximum of accommodation amplitude of 20's was smaller than mean of expected accommodation. From the result, it was expected that people in early 20's who have more working times might have festinated accommodative insufficiency than 40's.

• KOREAN POULTRY JOURNAL
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• v.42 no.10
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• pp.96-100
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• 2010

본 설문은 지난 7월에 개최된 농어촌산업박람회에서 소비자를 대상으로 계란과 닭고기에 대한 소비경향을 조사한 것이다. 이번에 참여한 소비자들은 계란분야에 347명(남성 47.3%, 여성 52.7%), 닭고기 분야에 237명(남성 46%, 여성 54%)이 설문에 참여하였다. 참여 연령층을 보면 계란분야는 20대(5.8%), 30대(14.2%), 40대(17.1%), 50대(31.5%), 60대(22.8%), 70대 이상(8.7%)로 나타났으며, 닭고기분야는 20대(4.7%), 30대(9.8%), 40대( 19.1%), 50대(26.4%), 60대(27.2%), 70대(12.8%)로 4,50대 소비자들의 참여비중이 높았다.

• Korea journal of population studies
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• v.34 no.3
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• pp.55-84
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• 2011

This study initiated with the intention to reveal the social consultations and fissures through a comparative analysis on generational characteristics by indicating occupation-related identities with the concept of social identity supported by theoretical resources. According to the three dimensions of social identity which are evaluation, potency and activity, there was more generational agreement rather than difference toward occupation-related identities. Among the 44 identities, only evaluation dimensions on minister, congressman, plane captain, farmer and potency dimensions on CEO of a major companies, professor, medical doctor, nurse, celebrity, shaman, unemployed person were statistically significant. For 'Leader and Professional', the respondents in their 50's gave high scores in both evaluation and potency dimensions. On the other side, the 30's had negative viewpoints while the 20's and 40's had neutral perspectives. For the potency dimension, the age groups were divided into the 20's, 30's and 40's, 50's; having the younger generations underestimate the potency dimension of such categories. Also for the 'General Occupation', 20's and the 30's relatively devaluated with more distinctive degree toward evaluation dimensions. For religion, 20's and 30's were positive toward buddhist monks while the 40's and 50's were more favorable with priests. For the non-economically active population, the lifetime cycle influenced each generations. When performing a two dimensional analysis toward the 'Leader and Professional' with evaluation and potency on each axis, the 50's highly evaluated both evaluation and potency dimension of such identities. However, for the 40's, 30's and 20's, the average value fell while the focus of the distribution deepened. The 30's had negative perspective toward the evaluation dimension while the 20's reflected critical attitude toward the potency dimension.

• The Journal of the Korea Contents Association
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• v.11 no.6
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• pp.270-278
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• 2011

The purpose of this study was to compare acute and chronic LBP patient in twenties and forties, respectively by size measure paraspinal muscle (cross-sectional area; CSA). CSA of paraspinal muscle (psoas, multifidus, erector muscle) size was measured by free-handling technique of the picture archiving and communication system(PACS) using MRI at the level(lower end-plate of L4) in twenties(9 males, 10 females) and forties(9 males, 8 females) in acute and chronic LBP patient. The results of this study showed no significantly difference between acute and chronic LBP (p>0.05) in twenties patients. However, there was significant difference between acute and chronic LBP (p<0.05) in forties patients. Also, there was significant difference in paraspinal muscle CSA between chronic LBP patients in twenties and chronic LBP patients in forties (p<0.05). This study showed that paraspinal muscle atrophy was observed in forties with various cause, but Not chronic LBP patients in twenties. Accordingly it is required for chronic LBP patients in forties to minimize trunk muscle atrophy through immediate back muscle dynamic exercise and early functional activity.

• Journal of the Korean Society of Radiology
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• v.5 no.4
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• pp.189-194
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• 2011

This study used magnetic resonance diffusion tensor imaging (DTI) to quantitatively analyze the neural fiber tractography according to the age of normal corpus callosum and to evaluate of usefulness. The research was intended for the applicants of 60 persons that was in a good state of health with not brain or other disease. The test parameters were TR: 6650 ms, TE: 66 ms, FA: $90^{\circ}$, NEX: 2, thickness: 2 mm, no gap, FOV: 220 mm, b-value: $800s/mm^2$, sense factor: 2, acquisition matrix size: $2{\times}2{\times}2mm^3$, and the test time was 3 minutes 46 seconds. The evaluation method was constructed the color-cored FA map include to the skull vertex from the skull base in scan range. We set up the five ROI of corpus callosum of genu, anterior-mid body, posterior-mid body, isthmus, and splenium, tracking, respectively, and to quantitatively measured the length of neural fiber. As a result, the length of neural fiber, for the corpus callosum of genu was 20's: $61.8{\pm}6.8$, 30's: $63.9{\pm}3.8$, 40's: $65.5{\pm}6.4$, 50's: $57.8{\pm}6.0$, 60's: $58.9{\pm}4.5$, more than 70's: $54.1{\pm}8.1mm$, for the anterior-mid body was 20's: $54.8{\pm}8.8$, 30's: $58.5{\pm}7.9$, 40's: $54.8{\pm}7.8$, 50's: $56.1{\pm}10.2$, 60's: $48.5{\pm}6.2$, more than 70's: $48.6{\pm}8.3mm$, for the posterior-mid body was 20's: $72.7{\pm}9.1$, 30's: $61.6{\pm}9.1$, 40's: $60.9{\pm}10.5$, 50's: $61.4{\pm}11.7$, 60's: $54.9{\pm}10.0$, more than 70's: $53.1{\pm}10.5mm$, for the isthmus was 20's: $71.5{\pm}17.4$, 30's: $74.1{\pm}14.9$, 40's: $73.6{\pm}14.2$, 50's: $66.3{\pm}12.9$, 60's: $56.5{\pm}11.2$, more than 70's: $56.8{\pm}11.3mm$, and for the splenium was 20's: $82.6{\pm}6.8$, 30's: $86.9{\pm}6.4$, 40's: $83.1{\pm}7.1$, 50's: $81.5{\pm}7.4$, 60's: $78.6{\pm}6.0$, more than 70's: $80.55{\pm}8.6mm$. The length of neural fiber for normal corpus callosum were statistically significant in the genu(P=0.001), posterior-mid body(P=0.009), and istumus(P=0.012) of corpus callosum. In order of age, the length of neural fiber increased from 30s to 40s, as one grows older tended to decrease. For this reason, the nerve cells of brain could be confirmed through the neural fiber tractography to progress actively in middle age.

• Korean journal of food and cookery science
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• v.18 no.4
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• pp.399-406
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• 2002

Steam cakes were prepared with the addition of pine needle powder(Pinus densiflora Seib. et Zucc) at 0%, 1%, 2%, 3%, 4%, and their sensory quality and mechanical characteristics were compared. Sensory evaluation was performed and compared between the subjects in twenties and forties of age. As a result of the sensory evaluation in forties, steam cake with 3% pine needle powder showed the highest score in overall acceptability; however, in the group of twenties, control cake with no pine needle powder showed the highest score. In the measurement of color changes, L value(lightness) was decreased, but a value(redness) and b value(yellowness) were increased as the addition of pine needle powder increased. In textural characteristics, the hardness, springiness, gumminess and brittleness of steam cake were decreased by the increase of pine needle powder. The hardness and brittleness were increased as the storage time increased.

• Proceedings of the Korea Fashion and Costume Design Association Conference
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• 2004.06a
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• pp.65-67
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• 2004

해외 거주 한국인은 동일한 한민족임에도 불구하고 사회 문화적 환경, 생활여건, 경제 수준아 다름에 따라 서로 다른 신체적 특성이 나타날 것이다. 본 연구는 해외 거주 한국인 중 가장 많은 수를 차지하고 있는 중국 연변과 하얼빈에 거주하는 조선족 20대와 40대 여성의 체형 분석을 목적으로 한다. (중략)

• Culinary science and hospitality research
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• v.22 no.5
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• pp.313-324
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• 2016

The purpose of this study was to investigate in the Age-Specific Choice Attributes of Bakery Product Purchasers on Gyeongbuk. The results were as follows : The findings of survey showed that in general characteristics of respondents, the number of males was 194(33.4%) and females 387(66.6%), so the number of females was slightly higher than that of males. On the matter of bakery purchase attributes, in the case of food life by ages, the 20s belonged to more 'taste-interest type'(44.7%) and the 30s~50s were more 'health-interest type'(p<0.001). When purchasing bakery products, consumers had different importance factors such as taste 61.8%, nutrition 17.6%, price 9.1%. In terms of taste, by ages the 20s were 73.9%, the 30s 65.8%, the 40s 55.8% and the 50s 46.0%(p<0.001). In bakery-using type, franchise bakery was 70.4%, window bakery 16.0%, in the case of franchise bakery by ages, the 20s were 70.2%, the 30s 78.1%, the 40s 72.1% and the 50s 56.0%(p<0.001). In their preference of bakery products, various kinds of sandwich the 20s liked by 37.3%, the 50s by 12.0%(p<0.001). Natural fermented bread accounted for 14.9% in the 20s and 37.0% in the 50s(p<0.001).

• Science of Emotion and Sensibility
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• v.13 no.3
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• pp.485-492
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• 2010

This thesis analyzes the proportion and disproportion of faces through visual analysis and measured value for women faces in 20s and 60s.. The proportion of bizygion breadth and face height is 1 : 1.34 in 20s and 1 : 1.39 in 60s which shows face height is ling in 60s, and 0.85 : 1 : 1 for upper face length, middle face length and lower face length in 20s which shows the proportion of upper face length and lower face length are long while they are 0.84 : 1 : 1.06 in 60s which shows lower face length is long and upper face length is short. If the proportion of the face is more than $2^{\circ}$ which is severe imbalance, angle of eyes is 8% in 20s, 13% in 60s, and angle of nasal is 11% in 20s, 29% in 60s, angle of mouse is 11% in 20s and 40% in 60s, showing imbalance of 60s is severe. As above, It shows that face height is longer in 60s than in 20s and lower face is long among others because face's change due to aging. Also, We able to know that face's imbalance is severer in 60s than in 20s.