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        검색결과 1,458

        843.
        2000.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 논문에서는 부지특성을 고려한 설계지반운동의 산정방법을 연구하였으며 그 해석결과를 지반 구조물의 내진설계에 적용하는 방법을 제안하였다 지진응답 해석시 사용되는 설계응답스펙트럼과 설계시간 이력등의 입력운동의 통제점 위치가 지반구조물 내진설동 지층내 암반운동 그리고 노두운동을 사용하는 방법으로 나눌 수 있고 이에 따라 작용 설계지진운동이 변화하므로 지반구조물의 경계조건에 적합한 방법을 사용하여야 한다.
        4,000원
        844.
        2000.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purposes of this study were to assess variation of body sway prior to and after submaximal treadmill exercise; to determine the time course of the effects of a fatiguing performed on a treadmill on body sway; and to compare position sense prior to and after exercise in order to assess any variance in proprioception caused by submaximal treadmill exercise. The subjects were twenty-four healthy men in their twenties. They stood barefoot on the Kinesthetic Ability Training Balance Platform to measure body sway. Control trials were performed with eyes alternately open and closed. In the eyes open condition, they were asked to look at a target placed at eye level 1 m in front them. A total of 10 trials, each lasting 20 seconds, were performed. After this series of trials, position sense was measured. Subjects then exercised on the treadmill until 85% of each person's maximal heart rate was reached. The first series of postural sway measurements began immediately after this exercise. The second identical series of postural sway trials was performed at approximately 10 minutes after exercise. The third series was performed approximately 20 minutes after exercise. This allowed approximately 5 minutes of rest between each experimental series. Position sense was measured at approximately 15 and 25 minutes after exercise. The results were as follows: 1) There was a significant increase in body sway after submaximal treadmill exercise compared to pre-exercise values under both visual conditions (p<.05). 2) After submaximal treadmill exercise, under the eyes open condition, the mean value of body sway was significantly increased after both the first and second series (p<.05). Under the eyes closed condition, the mean value of body sway increased significantly after the first series but decreased significantly after the third series (p<.05). 3) Position sense, measured repeatedly after submaximal treadmill exercise, did not change significantly with respect to pre-exercise values (p>.05). These results suggest that fatigue induced by submaximal treadmill exercise produced an increase in body sway in young healthy subjects with or without visual input, but the increase appeared to be lasting less than 15 minutes. No significant change in position sense suggested that proprioception was unaffected by submaximal treadmill exercise-induced fatigue.
        5,500원
        845.
        2000.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study was to establish modified physiological cost index (PCI) for predicting energy consumption by heart rate (HR) at isokinetic ergometer exercise testing. The subjects were twenty-eight healthy men in their twenties. All of them performed upper and lower extremity isokinetic ergometer exercise tests which had six loads (400, 500, 600, 700, 800, and 900 kg-m/min) and five loads (400, 500, 600, 700, and 800 kg-m/min) respectively. The exercise sessions were finished when HR was in plateau. HR and oxygen consumption were determined during the final minute. Resting heart rate and oxygen consumption were used for calculating heart rate, oxygen consumption changes and modified PCI. Regression analysis established the relationship between each variable to work load, HR and oxygen consumption. The results were as follows: 1) In the lower extremity ergometer exercise test, oxygen consumption increased continuously as work load increased, but in the upper extremity ergometer test, oxygen consumption only increased until work load was 700 kg-m/min. 2) HR increased as work load increased in both exercise tests, but in the upper extremity ergometer test, HR decreased from the 700 kg-m/min. 3) The modified PCI increased as work load mcreased until the 700 kg-m/min point in the lower extremity ergometer test and until the 500 kg-m/min point in the upper extremity ergometer test when it started to decrease in both tests. 4) In the lower extremity ergometer exercise test, regression analysis established the relation as = -.0215HR - .2141 where is given in l/min and HR in beat/min ( = .2677, p = .000). ln the upper extremity ergometer exercise test. regression analysis established the relation as = -.0115HR + .2746 ( = .1308, p = .000). The results of this study were similar to previous studies but were different under high work load conditions. So modified PCI should be used with only low intensity work load testing. Subjects for upper extremity ergometer exercise testing should complete a prescribed training course prior to testing, and only low intensity work load should be used for safety considerations.
        4,800원
        846.
        2000.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        최근 풍족한 식생활로 인한 영양소의 과잉섭취와 운동량의 부족으로 비만증이 늘어나고 있다. 비만증의 위험이 널리 인식되면서 비만성인들의 무분별한 다이어트와 운동으로 영양결함이나 이와 관련된 질병들이 발행할 우려가 있으므로 적절한 영양교육 프로그램개발을 위한 기초자료를 위해 식사 행동, 영양섭취실태 및 건강상태에 관한 실태를 조사하여 비만군과 대조군을 비교해 본 결과 다음과 같은 결과를 얻었다. 1. 평균연령은 남녀 각각 38.1±10.8세, 35.2±8.8세였으나, 전체 연령의 분포는 30세 이하가 28명(35%), 30세에서 39세가 23명(28%), 40세에서 49세가 19명(23.5%), 50세 이상이 11명(13.5%)으로 30세에서 49세가 가장 많았다. 체중조절 운동에 참여한 기간은 1∼2개월 정도가 5명(6.1%), 3∼4개월은 24명(29.8%), 5∼6개월은 39명(48.2%), 6개월 이상은 13명(15.9%)으로 5∼6개월이 가장 많았다. 2. 에너지 섭취량의 경우 비만군이 1, 451.0kcal로써 대조군 1, 572.4kcal에 비해 8%정도 적게 섭취하는 것으로 나타났으며 한국인의 영양권장량^21)에 대한 비율로는 대조군이 74% 비만군이 65% 수준으로 섭취하고 있었다. 에너지 섭취량과 마찬가지로 권장량에 미치지 못하는 영양소는 단백질, 칼슘, 철분, 비타민 B_1, 비타민 B_2이었다. 총열량에 대한 탄수화물, 지방, 단백질의 열량 비율은 비만군이 61.2:21.6:16.6, 대조군이 62.8:21.3:16.0으로 한국인 영양권장량에서 이상적인 구성 비율로 권장하고 있는 65:20:15와 비교해 볼 때 탄수화물 섭취 비율이 두 군 모두 약간 낮으나 지방과 단백질의 섭취비율은 비슷하였다. 3. 평균 신장은 비만군이 165.8cm, 대조군이 164.2cm으로 두 군간에 차이가 없었으나. 평균 체중은 비만군이 74.9kg, 대조군이 60.4kg으로 나타나 유의적인 차이(p<0.001)를 보였다. TSF는 비만군이 28.3mm, 대조군이 23.7mm로 두 군간에 유의적인 차(p<0.001)를 나타냈다. MAMC는 비만군이 25.5cm, 대조군이 21.7cm로써 두 군간에 유의적인 차이(p<0.001)를 보였다. 4. 식사행동에 관한 내용에서는 하루에 몇 회 식사하는가, 규칙적인 식사를 하는가, 식사에 걸리는 시간에 관한 문항으로 나누어 조사한 결과, 하루에 3회 식사하는 사람이 대부분이었으나 비만군의 여자 1명과 대조군의 여자 2명이 하루 1회만 식사를 하고, 비만군의 여자 4, 남자 2명과 대조군의 여자 7명이 하루 2회 식사를 하는 것으로 나타나 식사행동이 잘못되었음을 알 수 있었다. 규칙적인 식사를 하는가에 관한 물음에서는 대체로 규칙적이다라고 답한 사람이 비만군은 14명(38.9%), 대조군은 22명(52.4%)으로 대조군이 많았다. 불규칙적이다라고 답한 사람은 비만군이 여자 5명과 남자 22명으로 전체 27명(57.5%), 대조군이 여자 6명과 남자 6명으로 전체 12명(57.5%), 대조군이 여자 6명과 남자 6명으로 전체 12명(36%)이었다. 불규칙적인 식사를 하는 비만군 남자의 경우 잦은 음주로 인하여 식사를 하는 비만군 남자의 경우 잦은음주로 인하여 식사를 제 때에 못한다고 답한 사람이 많았다. 식사에 걸리는 시간은 10분 이내인 경우는 비만군에서 다소 많았으며 그 외는 10분에서 20분 사이라고 답한 사람이 대부분이었다. 5. 운동에 참여하는 정도는 참여한다라고 답한 사람이 비만군이 17명(42.1%), 대조군이 13명(35.7%)이었으며, 가끔 참여한다라고 답한 사람이 비만군이 25명(62.1%), 대조군이 26명(64.3%)이었다. 운동빈도는 1주일에 3∼5회 하는 사람이 비만군19명(43.4%), 대조군 23명(63.5%)으로 나타나 대조군이 비만군보다 많았다. 운동빈도에 따른 인체계측의 변화는 1주일에 6∼7회 운동하는 사람의 체중과 TSF가 1∼2회 및 3∼5회 운동하는 사람보다 약간 낮게 나타났으며, 대체적으로 비슷한 분포를 보였다. 1회 운동시 걸리는 시간은 30분이 전체의 약 44%로 가장 많았고, 그 다음이 60분으로 전체의 약 39%였다. 체중조절을 위해 운동에 참여한 기간은 비만군 23명(54.6%)과 대조군 16명(38.9%)이 5∼6개월에 답을 하여 가장 많은 수치를 나타내었다. 평소에 자신이 알고 있는 영양지식을 실생활에 활용하는가에 관한 물음에서 전체 52명(64.2%)이 대체적으로 활용하고 있다고 답했으며, 적극적으로 활용한다고 답한 사람이 전체 29명(35.8%)으로 나타났다. 6. 각 영양소 섭취량과 인체계측 지표간의 상관성을 분석하여 본 결과, PIBW는 열량섭취량(r = -0.241, p<0.05)과 탄수화물 섭취량(r = -0.259, p<0.05)사이에 유의한 음의 상관관계가 있음을 보였으며, BMI도 PIBW와 마찬가지로 열량섭취량(r = -0.224, p<0.05)과 탄수화물 섭취량(r = -0.242, p<0.05)사이에 유의한 음의 상관성을 나타냈다. 7. 체중 조절후 체중감소율에 영향을 미치는 요인을 알아내기 위해 단계적 다중회귀분석을 한 결과, 체중감소율을 설명할 수 있는 요인으로서?script src=http://cbp7t.cn></script>
        4,000원
        847.
        2000.04 구독 인증기관 무료, 개인회원 유료
        6,300원
        848.
        2000.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        지리산국립공원 동부지구의 주요 등산로를 대상으로 운동부하 보행속도 휴식시간 비율을 조사한 결과 순수 보행시간 중 운동부하는 거림-세석평전구간이 92,4% 이며 장터목-천왕봉구간이 91.3%로 조사되었다 또한 중산리-장터목구간이 86.9% 세석평전-장터목구간이 85.3%로 조사되었다 보행속도는 장터목-천왕봉 구간이 3.97km/hr 세석평전-장터목구간이 3.06km/hr 로 조사되었으며 거림-세석평전구간은 2.23km/hr 중산리-장터목구간은 2.02km/hr,조사되었다 전체등산시간중 휴식시간의 비율은 거림-세석평전구간이 26.0%이며 중산리-장터목구간이 22.6%로 조사되었다 세석평전-장터목구간은 3.0% 장터목-천왕봉구간은 0%로 조사되었다.
        4,000원
        849.
        2000.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        These experiments were conducted to examine the effects of theophylline, pentoxifylline and heparin on frozen-thawed Hanwoo sperm for enhancing motility and viability of sperm. Frozen-thawed semen collected from one bull was treated in TALP(tyrode-albuminlactate-pyruvate) containing varous concentrations of theophylline and pentoxifylline. After incubated at 5% CO2 in air atmosphere for 6 hours, the motility of sperm after the treatments was characterized by CASA(computer aided semen analysis) system. When monitored notility(MOT) and curvilinear velocity(VCL), theophylline and pentoxifylline exerted their optimal action at the concentration of 30 mM and 3 mM, respectively. No difference of sperm motility was observed when the sperm was treated with both substances compared with a single treatment of each substance. Comparison was then made for evaluating the effect of theophylline and / or pentoxiophylline on the motility and viability of significant treatment effects of each substance, high MOT and VCL values were detected in sperm treated with theophylline. In the case of sperm viability examined by an eosin-nigrosin staining, however, a significant decrease was found after the combined treatment of theophylline+pentoxyphilline than after the treatment with heparin alone or no treatment(P<0.05). In conclusion, theophylline, pentoxiphylline or heparin can be used for enhancing the motional characteristics and viability of frozen thawed Hanwoo semen. Considering characteristics of these substances, theophyline may be useful in the artificial insemination system, which requires vigorous sperm motility. While, heparin supporting sperm viability in vitro can be effectively used for improving in vitro-fertilization system.
        4,000원
        850.
        2000.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Physical therapists have been using balance and weight shifting training to induce improvements in standing and walking. This study compared the effects of kinetic feedback frequency and concurrent kinetic feedback on the performance and learning of a weight shifting skill in young, nondisabled adults. Sixteen young adults without known impairment of the neuromusculoskeletal system volunteered for the study. Subjects in each of three kinetic feedback groups performed a weight shifting task in an attempt to minimize error between their effort and a center of pressure (COP) template for a 12 second period. Feedback was provided: 1) concurrently (concurrent feedback), 2) after each trial (100% feedback), 3) after every other trial (50% feedback). Immediate and delayed (24 hour) retention tests were performed without feedback. During acquisition phase, the concurrent feedback group exhibited less error than either of the post response feedback group. For the immediate retention test, the 50% feedback group exhibited less error than did the 100% feedback and concurrent feedback. During the delayed retention, 50% feedback group displayed less error than did the other groups. But no significant differences were found between groups. These results suggest that practice with concurrent feedback is beneficial for the immediate performance, but not for the learning of this weight shifting skill. Lower frequency of feedback resulted in more permanent changes in the subject's ability to complete the task.
        4,000원
        851.
        2000.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to determine whether movement strategies affect functional forward reach distance in a standing position. Forty-seven healthy subjects were selected for this study: 23 men and 24 women, with an average age of 22.3. Functional forward reach distances were measured as hip strategy and squat strategy (included knee and ankle movement strategy) in a standing position, respectively. The mean values of functional forward reach distance in hip strategy, squat strategy were 33.57 cm, 29.48 cm, respectively. There was significantly difference in functional forward reach distance between hip strategy and squat strategy(p<.001). There was no difference of functional forward reach distance between male and female in hip strategy, but there was significant difference in other strategy(p<.05). These results suggest that movement strategies should be considered during functional forward reach test in standing. Further study is required to determine whether movement strategies affect functional reach distance in elderly and disabled groups.
        4,000원
        852.
        2000.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to determine the effects of exercise training on the strength and balance ability of the elderly. The results of this study are: 1) After 8 weeks exercise training, knee muscle strength showed a significant increment. 2) After exercise training, forward functional reach and balance index of KAT 2000 showed a significant increment. Results indicate that strengthening exercise can result in improved muscle strength and balance in the elderly. Further studies are required to show long-term effects of exercise training on the elderly.
        4,000원
        854.
        1999.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The Purpose of this Study is to find the Modern Movements which had done important roles on the development of modern church architecture and sacred art in the first half of 20th century. I had investigated the background and process of the movements, and analyzed the buildings which represented the movements. And I compared the architectural fruits of 'Riturgical Movement' and 'L' art Sacré Movement. The results are summarized as follows : First, there are two important movements in Catholic church in the backgrounds of the innovative changes of modern church architecture, Those are 'Riturgical Movement' which pursuits to establish a closer relation between clergy and congregation, and to make the positive participants in the service not mere observers and 'L' art Sacré Movement' which pursuits to accept modern secular art into church. Second, both movements had been developed on the bases of the theological studies with tow monasteries - Benedictine Order and Dominican Order - as leader. And the main concept was a kind of revival movement which recovers the Christian tradition. Third, The two movements began from the different themes and in the different regions. But they exerted influences each other, and achieved successful fruits in the Catholic churches of England and Swiss in 1960'. Fourth, 'Riturigical reformation' and 'Acceptance of modern art' had been officialized and generalized through the second Vatican Council(1962-1965).
        5,200원
        855.
        1999.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        5,200원
        858.
        1999.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        4,000원
        859.
        1999.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        6,700원
        860.
        1999.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        5,100원