• Title/Summary/Keyword: Korean Medicine industry

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Relationship between Cognitive Anxiety and Performance in Closed Loop Skill Sports (폐쇄기술 스포츠의 인지불안과 수행력의 관계 : 메타분석)

  • Kang, Kyoung Doo;Jung, Hye Yeon;Ha, Eun Joo;Han, Doug Hyun
    • Korean Journal of Psychosomatic Medicine
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    • v.25 no.1
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    • pp.19-26
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    • 2017
  • Objectives : The aim of this meta-analysis study was to examine the relationship between cognitive anxiety and performance in closed loop skill sports. Methods : A comprehensive literature search was conducted using databases including Korean Information Service System, DBpia, Research Information Sharing Service, and National Assembly Library from 1980 to 2015. Search terms included 'Golf', 'Shooting', 'Archery', 'Anxiety', and 'Performance'. Standardized mean difference and 95% CI(confidence intervals) were calculated, and the heterogeneity of the studies was estimated using Q statistic. Results : Ten studies have satisfied the inclusion criteria. The main findings indicate that cognitive anxiety was significantly reverse correlated with performance in closed loop skill sports(r=-.198). The mean effect size for men(r=-.31) was significantly greater than that for women(r=-.05). Conclusions : Our results suggest that cognitive anxiety in closed loop skill sports is correlated with performance of athletes. Future study related to psychological aspects on athletes in sports is required in order to understand the specific evidence of relationship between anxiety and performance.

Effects of Allium Hookeri Extracts on Glucose Metabolism in Type II Diabetic Mice (당뇨병 마우스(db/db) 모델에서 삼채(Allium Hookeri) 부위별 추출물의 항당뇨 효능 연구)

  • Kim, Nam-Seok;Choi, Bong-Kyoum;Lee, Seon-Hye;Jang, Hwan-Hee;Kim, Jung-Bong;Kim, Haeng-Ran;Choe, Jeong-Sook;Cho, Yong-Sik;Kim, You-Suk;Yang, Jae-Heon;Kim, Young-Soo;Kim, Hyun-Ju;Kim, Dae-Keun;Lee, Chang-Hyun;Lee, Sung-Hyen
    • Korean Journal of Pharmacognosy
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    • v.47 no.2
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    • pp.158-164
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    • 2016
  • This study was conducted to verify the potential of Allium hookeri to control blood glucose metabolism in diabetes model. We fed the experimental diets(ALE, ARE) supplemented with the extract of Allium hookeri leaf or root at 1% of diet to the diabetic mice (C57BLKS/J, db/db) for 8 weeks. Hetero and control mice were fed the control diet without any extract of Allium hookeri leaf or root. At 8th week of feeding the diets, we measured body weight, blood glucose, HbA1c, and plasma insulin levels and conducted an oral glucose tolerance test (OGTT) and staining insulin immunoreactive cells in islets of pancreas. ARE group treated with the root of A. hookeri showed significantly lower blood glucose levels than the Cont group at 120 min in the OGTT. However, HbA1c level was significantly reduced in both ALE and ARE groups, and higher serum insulin levels and increased density of insulin immunoreactive cells compared with the Cont group were found in these 2 groups. Based on these results, A. hookeri is considered to be effective in improving glucose tolerance by partially affecting insulin secretion and it may be used to prevent and treat diabetic disease.

Quality Properties of Peach Pudding Added with Korean Peach (Prunus persica L. Batsch) Juice and Gelatin (복숭아 과즙과 젤라틴을 이용한 복숭아 푸딩의 품질특성)

  • Park, Seul-Gi;Song, Tae-Hee;Kim, Dong-Ho;Kim, Gil-Hah;Jang, Keum-Il
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.43 no.2
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    • pp.265-272
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    • 2014
  • In this study, we investigated the quality properties and sensory evaluation of pudding added with peach (Prunus persica L. Batsch) juice and gelatin. The water content and pH of pudding decreased with increased peach juice content, whereas the sugar content increased. Further, the water content of pudding decreased with increased gelatin content, whereas the pH was constantly maintained and the sugar content slightly increased. Regarding the color of pudding, the L and b values decreased with increased peach juice content, whereas the L value increased with increased gelatin content. Regarding the texture of pudding, hardness and springiness decreased with increased peach juice content, whereas adhesiveness, chewiness, and cohesiveness all increased. All texture properties increased with higher gelatin content. In the sensory evaluation of color, flavor, taste, texture, and overall preference, pudding with 60% (w/w) peach juice and 1.5% (w/w) gelatin showed the highest values. These results demonstrate the possibility of using high value-added products for peach processing in the food industry, as the addition of peach juice and gelatin enhanced the quality and sensory properties of pudding.

Origin and Developing Process of Ark-shell Culture Industry in Korea (우리나라 꼬막양식업의 발상과 발달과정)

  • BAE Su-Whan
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.19 no.1
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    • pp.72-82
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    • 1986
  • There were three important species among the marine organisms which were cultured in the inter tidal zone in the old days, and an ark-shell was one of them. Exaiming old books and reports concerning fishery were made in order to reveal the history and industrial trend of ark-shell culture. Ark-shell was called by the different names in the old days "Komak" and "Sohap". The name of Komak was originated in the southern coast area in the 1,700s, and from the begining of 18 century Komak was used only. Ark-shell was produced in all southern and western coast areas, where a little of fresh water flows into the calm inner sea and the intertidal zone is well developed. It was well known that ark-shells shell as well as its flesh took the effect of a medicine. Its culturing method in Korea seems to be derived from China in the beginning of 19 century, it was cultured first at the southern area of Chollanam-do. It was considered as the side business, but after Korean war it is produced on the basis of cooperative work, now its production is quite increased (more than $5,000\fra{M}{T}$) due to the goverments development policy.

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Flock-level Seroprevalence of and Risk Factors for Infectious Bronchitis Virus in Korean Laying-hen Flocks (국내 산란계에서 닭 전염성기관지염의 계군 수준 유병율과 위험요인)

  • Pak, Son-Il
    • Journal of Veterinary Clinics
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    • v.26 no.2
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    • pp.134-137
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    • 2009
  • Although there is circumstantial evidence that infectious bronchitis(IB) in the Korean layer industry has contributed to severe economic losses, the seroprevalence against IB virus(IBV) and risk factors associated with seropositivity are not well known. During May to October 2007, 820 blood samples were randomly collected from 41 laying hen flocks(20 birds in each flock) with $\geq$ 3,000 birds of 18 week of age or older in three provinces of Korea. The samples size was determined considering a flock-size range of 3,000-65,000 birds, an expected bird-level seroprevalence of $\geq$ 15%, and a 95% level of confidence. Serum samples were examined using a hemagglutination inhibition test for antibodies to IBV. The overall apparent flock-level seroprevalence was 46.3%(95% CI, 31.1-66.6) with no statistically significant differences among provinces(X=1.205, p>0.05). There were 19 positive flocks with one to eight seropositive birds, and 11 of these had one or two seropositive birds. None of the measured parameters were significantly associated with seropositivity against IBV in a subsequent multivariable logistic regression analysis. A longitudinal risk factor studies considering management and vaccination characteristics possibly associated with the IBV flock prevalence would be beneficial.

Analysis of Research Papers Published by the Korean Journal of Hospice and Palliative Care (The First Issue~2012) (한국 호스피스.완화의료학회지 게재논문 분석(창간호~2012년))

  • Hwang, In Cheol;Kang, Kyung-Ah;Ahn, Hong Yup
    • Journal of Hospice and Palliative Care
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    • v.16 no.2
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    • pp.74-79
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    • 2013
  • The purpose of this paper is to suggest a direction for future studies based on the analysis of the articles published in the Korean Journal of Hospice and Palliative Care from 1998 to 2012. A total of 240 articles (51 reviews, 189 original) were examined in three five-year groups. Categories of analysis include authors' background (profession, region) and general characteristics and qualitative aspects of the original paper (participants, topic, study design, data analysis, ethical consideration, multidisciplinary approach, research funds and sample size estimation). While the journal publishes more of articles than before, it is mainly due to the increase in the number of review articles, not original articles. As for study topics, healthcare industry and physical symptoms were most frequently studied. The disparity in authors' regional background is fading, and more articles are published by nurses than before. Moreover, more studies are funded while fewer papers tend to adopt a multidisciplinary approach or focus on care givers. Also, in terms of a study design, the number of experimental and methodological studies has slightly increased. In the qualitative aspect, studies considered ethical issues and collected participation consent, and fewer studies reported an estimated sample size. In data analysis, post-adjustment comparison decreased, and new analytical methods are increasingly used. Our results indicate the need to conduct research with more extensive scientific data in various fields of hospice and palliative care.

Dietary Intakes and Serum Lipids and Iron Indices in Obese Children (비만아동의 영양섭취와 혈청 지질농도 및 철분영양지표)

  • Kim, Jin-Yi;Han, Young-Shin;Bae, Hyun-Sook;Ahn, Hong-Seok
    • Korean Journal of Community Nutrition
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    • v.11 no.5
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    • pp.575-586
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    • 2006
  • This study was performed to compare nutrient intakes, diet quality and serum indices (TG, Total cholesterol, LDL-cholesterol, HDL-cholesterol, RBC, Hb, Hct, Serum iron, ferritin, MCV) of obese and normal weight children. The subjects were 149 children living in the Seoul and Gyeonggi areas. Each subject was assigned to one of such as normal weight group ($15th{\le}BMI$ percentile < 85th, n = 82) or obese children ($85th{\le}BMI$ percentile, n = 67) according to their percentile of BMI by The Korean Pediatric Society. Data on dietary intakes, body composition and serum indices were obtained. Differences of all the above variables were assessed. Energy, carbohydrate, fat, cholesterol, total fatty acid, SFA, MUFA, PUFA, phosphate, potassium, zinc, vitamin $B_1$ and vitamin $B_6$ intakes of girls in the obese group were higher than those of the normal weight group (p<0.05). The intake of fiber was as insufficient as below 50% of KDRIs in both groups. Nutrient adequacy ratio of calcium, iron, phosphate, zinc and folate in obese boys were lower than those of normal weight boys (p<0.05). Energy intakes of grain and milk and dairy food in the obese girl group ($905.9{\pm}344.5kcal,\;210.9{\pm}166.4kcal$) were higher than those of normal weight girls ($671.2{\pm}360.7kcal,\;184.0{\pm}103.5kcal$) (p<0.05). HDL-cholesterol level of obese boys ($52.7{\pm}6.3mg/dL$) was significantly lower than that of normal weight boys ($65.3{\pm}15.6mg/dL$). Serum iron level of obese boys and girls (boys: $79.4{\pm}32.6mg/dL$, girls: $98.3{\pm}16.2mg/dL$) was significantly lower than those of normal weight children (boys: $104.8{\pm}38.6mg/dL$, girls: $106.7{\pm}28.9mg/dL$) (p<0.05). These results suggest that there should be sensible food selection and more intakes of fruit and vegetable are needed to improve the nutritional status in obese children.

Analysis and Risk Assessment of N-Nitrosodimethylamine and Its Precursor Concentrations in Korean Commercial Kimchi (국내 유통 김치 중 N-Nitrosodimethylamine과 그 전구물질의 함량 분석 및 안전성 평가)

  • Kang, Kyung Hun;Kim, Sung Hyun;Kim, Sang-Hyun;Kim, Jeong Gyun;Sung, Nak-Ju;Lim, Heekyung;Chung, Mi Ja
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.46 no.2
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    • pp.244-250
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    • 2017
  • Dimethylamine (DMA), nitrate, nitrite, and biogenic amines (BA) are precursors of carcinogenic N-nitrosamines. This study investigated contamination levels of DMA, nitrate, nitrite, and BA in various types of Korean commercial kimchi such as Baechu kimchi, Kkakduki, Chonggak kimchi, Matkimchi, ripened Baechu kimchi, and Baek kimchi. The average DMA, nitrate, and nitrite levels in Baechu kimchi were 29.7, 2,178.8, and 3.0 mg/kg, respectively. Low levels of DMA and nitrate were detected in Kkakduki. Tryptamine, putrescine, cadaverine, tyramine, and spermidine were detected in kimchi with exclusion of Baek kimchi and Chonggak kimchi. Tryptamine in Baek kimchi was only present in trace amount, and spermidine was not detected in Chonggak kimchi. The average tryptamine, putrescine, cadaverine, tyramine, and spermidine levels in Baechu kimchi were 15.0, 64.6, 18.0, 44.0, and 7.8 mg/kg, respectively. A low level of tyramine was detected in Kkakduki. In addition, contamination of N-nitrosodimethylamine (NDMA) was detected in Kkakduki at a level of $1.38{\mu}g/kg$. Daily exposure to NDMA in the consumer only group was estimated using average daily Kkakduki consumption and average body weight of the total population. The estimated daily intake of NDMA by Kkakduki was $2.31{\times}10^{-7}mg/kg\;b.w./d.$ The margin of exposure to NDMA for the general population was 259,924. Accordingly, the health risk from NDMA caused by intake of Kkakduki was considered to be very low.

Effects of Amount and Type of Jeotgal, a Traditional Korean Salted and Fermented Seafood, on N-Nitrosodimethylamine Formation during Storage of Kimchi (김치 저장 중 N-Nitrosodimethylamine 생성에 젓갈의 함량과 종류의 영향)

  • Kang, Kyung Hun;Kim, Sung Hyun;Kim, Sang-Hyun;Kim, Jeong Gyun;Sung, Nak-Ju;Lee, Soo-Jung;Chung, Mi Ja
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.45 no.9
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    • pp.1302-1309
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    • 2016
  • N-Nitrosodimethylamine (NDMA) is formed through reactions between dimethylamine (DMA) and nitrite. Jeotgal, a traditional Korean salted and fermented seafood, contains a large amount of DMA and is an ingredient of kimchi condiment. This study investigated the effects of amount and type of Jeotgal on changes in NDMA and its precursor contents during storage of kimchi. NDMA was found in all 23 Jeotgal samples, and DMA in nine salted and fermented shrimp samples showed levels ranging from 16.5 to 58.9 mg/kg (average of 30.9 mg/kg). The seven salted and fermented anchovy juice samples showed DMA levels ranging from 21.7 to 44.4 mg/kg (average of 34.5 mg/kg). Kimchi was assigned to one of the following five groups: kimchi without salted and fermented anchovy juice and salted and fermented shrimp (control), kimchi with small amount of salted and fermented anchovy juice (AK1), kimchi with large amount of salted and fermented anchovy juice (AK2), kimchi with small amount of salted and fermented shrimp (SK1), and kimchi with large amount of salted and fermented shrimp (SK2). SK2 had higher DMA content than SK1 during storage while AK2 had higher DMA content than AK1 after storage for 10 days. Nitrite contents of AK1 and SK1 were higher than those of AK2 and SK2 after storage for 20 days. NDMA content was significantly higher in SK2 than in SK1 after storage for 0 and 10 days, and NDMA content in AK2 was significantly higher compared to that in AK1 after storage for 0 days. The DMA and NDMA contents decreased in all kimchi samples during storage. The effects of amount and type of Jeotgal on DMA and NDMA contents were reduced after storage for 20 days. The results suggest that the content and type of Jeotgal have significant effects on formation of NDMA in kimchi.

Morphological and Agronomic Traits of Allium longicuspis Regel Collected in Central Asia (중앙아시아에서 수집한 꽃피는 마늘의 형태 및 농업적 특성)

  • Lee, Gi-An;Ko, Ho-Cheol;Cho, Gyu-Taek;Lee, Jung-Ro;Sung, Jung-Sook;Yi, Jung-Yoon;Lee, Young-Yi;Hur, On-Sook;Park, Hong-Jae;Rustamov, Abdumalik;Amanova, Makhfurat;Gwag, Jae-Gyun
    • Korean Journal of Plant Resources
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    • v.28 no.5
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    • pp.608-615
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    • 2015
  • Garlic (Allium sativum L.) has been used as both food and medicine in many cultures for thousands of years. Garlic cultivars are completely sterile and propagated through vegetative method. Collection of a large number of fertile accessions of these genus is needed to explore genetic variability. In order to investigate genetic variation among Allium species and its possibilities for direct cultivation in Korea, we characterized 12 accessions of A. longicuspis, flowering wild garlic which had collected from Central Asia, the main center of garlic diversity. Most of A. longicuspis accessions showed higher over-wintering and bolting rate, longer scape length and more number of bulbils than Korean landraces cultivar, Danyang and Euiseong, but A. longicuspis accessions exhibited smaller size of bulbs and bulbils. Most accessions of A. longicuspis had more number of cloves per bulb, except K229596 and K248824 than Korean landraces. All the accessions of A. longicuspis from Central Asia had complete bolters having many flowers and topsets in umbel. Further studies of A. longicuspis should focus on securing true seeds through removal of topsets and crosses among accessions to create the genetic variability.