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      • KCI등재

        Neurocognition of Aged Patients With Chronic Tinnitus: Focus on Mild Cognitive Impairment

        이상연,이준영,한상윤,서유주,심예지,김영호 대한이비인후과학회 2020 Clinical and Experimental Otorhinolaryngology Vol.13 No.1

        Objectives. To investigate the neurocognition of aged patients with chronic tinnitus and reveal the possible association between tinnitus severity and cognitive function, with attention to mild cognitive impairment (MCI). Methods. Fifty-eight elderly patients (≥65 years old) with chronic tinnitus (≥6 months) were prospectively enrolled in this study. All patients assessed the neurocognitive batteries including the Korean version of the patient health questionnaire-9 (K-PHQ-9), the Lawton instrumental activities of daily living scale (K-IADL), and the Montreal cognitive assessment (MoCA-K). After initial evaluation to exclude moderate or severe cognitive impairment by a psychiatrist, the patients were classified into two groups: MCI and non-MCI, according to the MoCA-K scores (cutoff value, 22/23). All patients underwent audiological examinations including psychoacoustic tests of tinnitus. Results. Of 58 patients, 10 (17.2%) met the MCI criteria. The tinnitus handicap inventory (THI) score in the MCI group was significantly higher than that in the non-MCI group. Based on multivariate regression analysis, a significant association between tinnitus severity and MoCA-K score was also detected. Specifically, bothersome tinnitus (THI score ≥30) was closely linked to the presence of MCI. Meanwhile, the impact of MCI on both K-PHQ-9 and K-IADL scores was not evident in patients with chronic tinnitus. Conclusion. Tinnitus severity appears to be a potential independent determinant for predicting the MCI, suggesting the underlying mechanism between chronic tinnitus and cognitive deficit. Given that MCI highly links to dementia, the evaluation of cognitive functions in aged patients with chronic tinnitus need to be considered at the initial assessment of tinnitus.

      • 프로축구 유소년 육성 방안 고찰

        이상연,김종환 중앙대학교 스포츠과학연구소 2002 體育硏究 Vol.- No.16

        The purpose of this study was to develop the system in order to train up youth soccer players. The study provides a great system for training skillful players. It also aims to offer the long term method for training up youth players with special needs to learn new skills, build physical fitness and self esteem. Professional teams should build up kids and youth soccer teams to produce good players. They should have more Interest in the youth soccer team which has lots of different levels according to age. The professional teams can provide an opportunity to continue development at each age group to reach the highest level possible under the guidance of highly qualified coaches. Therefore optimizing performance of the player at each level proving the highest potential in the age group(16-18). In order to produce the best young players, the youth soccer team must be managed by a professional team. The way matches are played between school teams should also be changed from tournament style play to the league system(this would put emphasis back on study). Thus I would like to suggest the following factors: First, school as well as professional teams should manage youth soccer teams. Second, at least until 16, the youth player should take part in "gular classes"ike ordinary students. They should only train after school and not in "p-Sook"intensive soccer training camp). The training camps must be established only in summer or winter vacation. Third, we should increase the number of local games and reduce national tournament games. The number of games should be evenly distributed on Saturdays or on Sundays by local leagues. Fourth, Acceptance to higher level of play such as high school or university should not depend on the winning and losing record of the team. This system must be changed to individual peformance of the player. Fifth, we have to provide more opportunities for school soccer teams to play against youth soccer teams which are managed by professional teams to raise the level of skills and competition. These factors as I mentioned can improve our school soccer system. We should form a youth soccer federation so this federation can organize matches between teams and manage them. It is helpful to the youth players to acquire new skills as well as to build their physical fitness. The league system should be formed according to the age. It is very useful to train the good young players.

      • 노년기 신체활동이 정신건강에 미치는 영향

        이상연,이명섭 중앙대학교 스포츠과학연구소 2001 體育硏究 Vol.- No.15

        The purpose of this study in to analyze hoe the physical activity of old adults influences on the mental health. The Simple Mental Testing was parcticed for the 100 of physical players and 60 of non-physical palyers, the total of 160, above 60 years old who live in the city of K. After that, we made a conclusion as the following; 1. When we compared the mental health of physical players with those of non-physical players, the physical activity of old physical players were certainly better than those of non-physical players in the field of somatization, fear, depression and anxiety. So, the physical activity had a good effect on the mental health of old adults. 2. When we analyzed the mental health according to the time of the physical activity, old physical players who exercised over 30 minutes were certainly better than those who did under 30 minutes in the field of somatization, fear, depression and anxiety. 3. When we analyzed the mental health according to the frequency in the physical activity, old physical players who exercised more than three times a week were better than those who did below three times a week in the field of somatization, depression and anxiety. 4. When we analyzed the mental health according to the period of the physical activity, old physical players who exercised over one year were better than those who did under one year in the field of somatization, fear, depression and indignation.

      • KCI등재
      • KCI등재

        전산유체역학을 통한 간척지 내 벤로형 온실의 자연환기량 분석

        이상연,이인복,권경석,하태환,여욱현,박세준,김락우,조예슬,이승노,Lee, Sang-Yeon,Lee, In-Bok,Kwon, Kyeong-Seok,Ha, Tae-Hwan,Yeo, Uk-Hyeon,Park, Se-Jun,Kim, Rack-Woo,Jo, Ye-Seul,Lee, Seung-No 한국농공학회 2015 한국농공학회논문집 Vol.57 No.6

        Recently, the Korean government announced a new development plan for a large-scale greenhouse complex in reclaimed lands. Wind environments of reclaimed land are entirely different from those of inland. Many standard books for ventilation design didn't include qualitative standard for natural ventilation. In this study, natural ventilation rates were analyzed to suggest standard for ventilation design of venlo type greenhouse built on reclaimed land. CFD (Computational Fluid Dynamics) simulation models were designed according to the number of spans, wind conditions and vent openings. The wind profile at a reclaimed land was designed using ESDU (Engineering Sciences Data Unit) code. Using the designed CFD simulation model, ventilation rates were computed using mass flow rate and tracer gas decay method. Additionally computed natural ventilation rates were evaluated by comparing with ventilation requirements. As a result of this study, ventilation rates were decreased with increasing of the number of spans. Ventilation rates were linearly increased with increasing of wind speed. When the wind speed was $1.0\;m{\cdot}s^{-1}$, only side vent was open and wind direction was $45^{\circ}$, homogeneity of ventilation rate at 0~1 m height is the worst. Finally, chart for computing natural ventilation rate was suggested. The chart was expected to be used for establishing standard of ventilation design.

      • KCI등재

        慶尙南道 咸陽地方에서의 主要精神疾患에 대한 疫學調査

        李祥淵 大韓神經精神醫學會 1975 신경정신의학 Vol.14 No.2

        The author studied the prevalence of major mental disorders (Schizophrenia, Manic depressive illness, Epilepsy, General paresis, Mental retardation and others) in Byung-Gock and Back-Jeon Myun, Ham-Yang Kun, Kyung-Nam, Korea which were populated by 12,466 persons, by the Intensive Census Visit Method from Jul. 1st, 1974 to 30th, 1974. The results were as follows; 1. The general prevalences were 0.26% for schizophrenia, 0.02% for manic depressive illness, 0.15% for epilepsy, 0.08% for mental retardation, 0.02% for others and 0.53% for all mental major disorders. 2. The age of onset of each disorder was largely coincident with the range of age of suspectibility suggested previously in other countries. 3. The correlated prevalences obtained from Weinberg's abridged method were 0.67%(the range of susceptibility; 16-40) for schizophrenia, 0.05%(the range of susceptibility: 16-50 or 21-50) for manic depressixe illness, 0.25% (the range of susceptibility: 5-30) for epilepsy. 4. The duration of disorders are more than 5 years in 66.67% of major psychoses. 5. Family mental illness history was revealed in 30.30% of all these patients. 6. Premorbid personality deviation was confirmed in 37.88% of them. 7. The kinds of treatments received by the most of all patients were either superstitious, shamanistic or herb drugs and only 21.21% of the patients has treated at general practitioners' clinic. Only one of them had history of psychiatric specialist's therapy.8. Education level, marital status and religious state does not seen any relationship with the precipitating causes of this major mental disorders.

      • KCI등재

        번식기 유부도 일대에 서식하는 검은머리물떼새(Haematopus ostralegus osculans) 성체와 미성체의 섭식 능력 비교

        이상연,유영한,정길상,최유성,주성배 한국환경생물학회 2019 환경생물 : 환경생물학회지 Vol.37 No.4

        During the breeding season, both adults and immature Eurasian Oystercatchers (Haematopus ostralegus osculans) were observed to feed on prey, such as gastropods (Umbonium thomasi) and bivalves, at the tide water line around Yubu island in Korea. To determine differences in the foraging efficiency between the adult and immature birds, we recorded the feeding behavior using digiscoping with a telescope and a smartphone. We compared the pace, the prey search rate, the proportion of prey search techniques, the feeding success rate, the handling time, and the heads-up rate between the adult and immature birds. There were significant differences in the proportion of prey search techniques when gastropods were consumed and in the prey search rate and heads-up rate when bivalves were consumed but there were no significant differences in feeding success rates. Therefore, although the immature birds on Yubu Island were inferior to adults during the breeding season and they lacked the proficiency to locate prey, their overall foraging efficiency was similar to adults. This was considered to be due to the continuous eating of bivalves during the wintering season, which requires a high level of foraging efficiency. 번식기 유부도 일대의 조수 경계부에서는 검은머리물떼새(Haematopus ostralegus osculans) 성체와 미성체가 한데 모여 복족류(서해비단고둥, Umbonium thomasi)와 이매패류를 섭식하는 것이 관찰된다. 본 연구는 성체와 미성체 간의 섭식 능력에 차이가 있는지 알아보고자 해당 먹이원을 섭식하는 개체들의 행동을 영상으로 녹화한 후 성체와 미성체로 구분하여 단위 시간당 걸음수, 먹이원 탐색시도횟수 및 탐색방법 구성비율, 섭식성공횟수, 조작시간, 머리 들어 올리기횟수를 비교하였다. 서해비단고둥을 섭식할 때 먹이원 탐색방법의 구성 비율, 이매패류를 섭식할 때 먹이원 탐색시도횟수와 머리 들어올리기횟수에서 유의한 차이를 나타냈으나, 단위 시간당 걸음수, 탐색시도횟수, 섭식성공횟수는 차이가 없었다. 결과적으로 번식기 유부도 일대에 서식하는 검은머리물떼새 미성체가 성체에 비해 비록 열세이고, 먹이원의 위치를 파악하는 능력이 부족하지만, 전반적인 섭식 능력은 성체와 유사한 수준임을 의미한다. 월동기간 동안 고도의 섭식 능력을 갖추어야 섭식이 가능한 이매패류를 지속적으로 섭식한 것에 기인한 것으로 판단된다.

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