• Sleep Medicine and Psychophysiology
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• v.19 no.2
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• pp.89-96
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• 2012

Objectives: Individuals differ in their biological rhythms. This study investigated the association between the morningness-eveningness and sleep patterns, daytime sleepiness and fatigue in Korean male adolescents. Methods: Participants were 501 eleventh grade male students ($16.9{\pm}0.2$ years of age) in one male high school in Seoul. Each student completed the Korean translation of composite scale (KtCS), Epworth sleepiness scale (ESS), Fatigue Severity Scale (FSS) and a questionnaire about their sleep schedule. Results: The evening group had shorter weekday sleep time than the intermediate (p<0.001) or morning group (p=0.029). The evening group had more daytime napping (16.8%, p<0.001), high rate of caffeine use (58.8%, p<0.001) and snoring (18.5%, p=0.037). The evening group showed more daytime sleepiness (8.7, SD=3.2, p<0.001) and severe fatigue (4.4, SD=1.2, p<0.001) than the intermediate or morning group. Conclusion: Adolescents with eveningness have higher problems in weekday sleep, daytime sleepiness and fatigue. An intervention program for sleep problem in these adolescents should be considered.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.185-187
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• 2013

일반적으로 사람은 육체적, 정신적 그리고 심리적 자극에 반응할 경우 스트레스(Stress)가 유발된다. 이 스트레스는 정상적인 업무수행 뿐만 아니라 건강에 악영향을 미칠 수 있고, 피로누적의 한 원인이 되기 한다. 특히 열악한 환경에서 직무를 수행하는 선원에게 있어서 스트레스는 해양사고의 직간접적인 요인이 될 수 있기 때문에 선박 인적자원관리의 한 측면으로 중요하게 다루어질 필요가 있다. 이 연구는 해운기업이 선원의 인사 및 안전관리 시스템에 활용할 수 있는 선원용 스트레스 평가도구를 개발하기 위한 것으로, 기본영역, 가족생활영역, 재정영역, 직업 및 선박생활영역에 대하여 90개의 항목으로 구성된 설문도구를 개발하여 설문조사를 수행하였고, Holmes & Rahe의 사회적응평가도구의 항목 및 평가지수와 비교분석하여 한국 선원의 문화적 차이를 고려한 설문도구를 개발하기 위한 기초적 연구를 수행하였다.

• The Journal of the Korean dental association
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• v.19 no.1 s.140
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• pp.73-80
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• 1981

치과임상에 있어서 약제, 재료, 기구 및 기타 부대시설과 치료실 환경은 오랫동안에 걸쳐 현금에 와서 놀라운 발전을 이룩하였음에도 치과의사가 시술중 받게되는 위해의 가능서은 아직도 여러곳에 상존하고 있는 실정이다. 의사가 늘 갖고 또 자신이 느껴야 되는 책임감에서 오는 긴장, 기계에서 오는 소음이 미치는 신체적영향 특히 청력과 관계되는 점 및 각종약제의 부작용 및 중독증, 그리고 치료중 예기치 않게 발생될 수 있는 환자로 부터오는 각종 감염, 도한 치과의사의 특수한 치료자세로부터 생기는 습관적인 정형외과적 문제와 정신적 육체적으로 겪게되는 격무로부터 오는 전신피로등의 문제를 어쩔수 없이 또는 치과의사 자신의 부주의로 당하고 있는 실례가 많다. 저자는 이 점에 대하여 위해가 생기는 문제를 항목별로 기술하면서 문헌적 고찰과 말레이시아의 치과의사 164명으로부터 설문을 통하여 수집한 사실의 통계를 분류하여 정리하고 그 예방 및 개선의 방법을 제시하면서 이는 치과의사뿐 아니라 종사자 전원이 숙지하여야 할 사실로 강조하였으며 가장 이상적인 치료실내의 치과의사용 의자를 고안하고 그 구조에 대하여 설명 하였다.

• Journal of Preventive Medicine and Public Health
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• v.25 no.4 s.40
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• pp.374-385
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• 1992

Some circadian rhythms can become disorgnized due to rotating shift work. This lack of organization, termed desynchronization, can produce a group of symptoms such as insomnia, GI disturbance and fatigue among many rotating shift workers. The magnitude of these symptoms are influenced by personal and environmental factors and the patterns of shift work. This study was carried out to investigate the subjective symptoms related to rotational schedules of shift work after personal and environmental factors adjusted. 182 male workers in rapidly rotating shift system and 86 male workers in weekly rotating shift system were conducted the questionnaire on personal factors and subjective sleep, GI and fatigue symptoms. Major findings obtained from this study are as follows: 1. The symptoms of 'feeling tired at work' and 'being irritable' were more frequent in weekly rotating shift workers (P<0.05), and the mean of symptom score was significantly higher in weekly rotating shift workers(P<0.01). 2. According to 6 hours of sleeping which is a definite elevation point of fatigue, there was not a significant difference between two groups in sleeping hours. Among workers in rapidly rotating shift system, the mean of symptom score was significatly higher in workers of less than 6 hours of sleeping(P<0.05), but it was not different among weekly rotating shift workers. 3. The symptoms of GI disturbance were more frequent in weekly rotating shift workers but statistically not significant. 4. The positive rate of mental and physical fatigue symptoms were significantly higher in weekly rotating shift workers(P<0.01) and mental and physical fatigue symptoms were more frequent in them (P<0.01). 5. After the effect of the factors that were significantly different between two groups by $X^2-test$ were controlled, the mean score of sleep disturbance was significantly higher in weekly rotating shift workers (P<0.01) and mental physical fatigue symptoms were more frequent in them (P<0.01). Based on these study results, subjective symptoms were more common in the weekly rotating shift workers. In future, medical examination and laboratory test will be also administered to evaluate a more accurate health outcomes and the review of current shift schedules will be required.

• Journal of Yeungnam Medical Science
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• v.3 no.1
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• pp.151-160
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• 1986

The authors studied depression using Zung's Self-Rating Depression Scale(SDS), in the subjects of 3,499 male and 1,335 female college freshmen of Yeungnam University. The authors collected the reports of SDS during the periods from January to February, 1986, and applied ANOVA and t-test on depression scores in order to compare them between various psychosocial factors, and sexes. The results are as follows : There was significant difference in the mean averages of total depression scores between male and female students: male students scored 35.68+7.46, female students scored 38.93+7.26(P<0.001). The depression scores relating to the items of indecisiveness, psychomotor retardation, decreased libido, and diurnal variation were relatively higher in both groups. One hundred and sixty-one male students(4.6%) showed seriously high degree depression scores of 50 or higher, while one-hundred and seventeen female students(5.8%) showed the same scores. Female students attending in liberal arts showed higher level of depression scores(P<0.01). There was a strong tendency toward higher depression scores in the student who were dissatisfied with their home atmosphere, colleges, department and familiarity of parents, and those who had pessimistic views of self image in the past, present or future in both groups(P<0.001).

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 1999.11a
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• pp.251-255
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• 1999

현대인의 활동범위가 넓어지고 작업의 양이 많아지면서, 육체적ㆍ정신적 피로를 해결할 수 있는 쾌적환경에 대한 관심이 높아지고 있다. 쾌적감이란 인간이 쉽게 동조하고 물입할 수 있어서, 인간과 환경이 일체가 되기 쉬운 상태로서 이에 대한 연구가 활발히 진행되어오고 있다. 본 논문은 수학적으로 표현하기 어려운 인간의 쾌적감 요소이미지와 물리적 환경 요소의 구조 분석에 신경망 이론을 적용한다. 인간감성 모델과 역인간감성모델을 제안하여, 지능제어 이론인 신경망(Neural Network)이 쾌적감 요소이미지와 물리적 환경 요소의 구조 분석에 유용하게 사용될 수 있음을 보인다.

• Advanced Industrial SCIence
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• v.1 no.2
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• pp.9-16
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• 2022

This study was a randomized before-and-after design of 17 subjects in the experimental group and 17 subjects in the control group to investigate the effects of listening to relaxing music on the mood state and autonomic nervous system, that is, heart rate of hospitalized patients with mental illness. The collected data were analyzed with SPSS V15.0. There was a statistically significant difference between the two groups in mood state and autonomic nervous system, that is heart rate and the effect of listening to relaxation music was objectively verified(<.05). among the subdomains of mood states, tension(<.00), depression (<.00), vitality (<.03), fatigue () <.01), excluding anger (>.39) and confusion (>.33) showed a significant difference, proving that it is an effective intervention method applied to hospitalized mentally ill patients. In the future, we would like to suggest long-term intervention research and development and application, and research on the effect of mood change and heart rate using individual preferred music.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.12
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• pp.8525-8534
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• 2015

The purpose of this study was to investigate relations among the Health Promotion Behavior, Physically, Psychological, and Social factors of the stroke patients. The subjects include the patients that were Stroke was diagnosed and being admitted to hospital. The data of total 223 stroke patients were used in analysis. Collected data were analyzed with descriptive statistics, t-test, ANOVA, Pearson correlation, and Structural Equation Analysis. As a result, The higher medical support health promotion behavior scores were higher. Health Promotion Behavior had correlations with the subjective health state(r=.56, p=.000), family support (r=.68, p=.000), medical support(r=.65, p=.000), Fatigue(r=.27, p=.004), and behavioral intentions(r=.75, p=.000). Factors Affecting Health Promotion Behaviors of the Stroke patients Physically factors of(${\beta}$=-.156, p=.014), Psychological factors of subjective health(${\beta}$ =.283, p=.001), behavioral intentions((${\beta}$=.362, p=.000), Social factors such as family support(${\beta}$=.219, p=.010), the medical support(${\beta}$=.246, p=.004) was found to be significant influence factors. In conclusion, health promotion behavior in stroke patients is subjective health, behavioral intentions, a family support. The higher medical support health promoting behavior appears score was found to be highly Psychological factors and social factors are important factors in promoting healthy behavior. Therefore, psychosocial personalized approach to maintaining the stroke health promotion, health promotion action program itdaneunde be used as basis for relapse prevention is significant.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1994.04a
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• pp.385-393
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• 1994

고지대에서 개최되는 국제운동경기의 경우에 선수들의 고지대 적응이 경기 력에 큰 영향을 미치는 경우가 많다. 고지대에서의 경기는 선수들에게 현기 증을 일으키고 호흡, 순환계의 곤란을 유발시키며, 피로감을 증대시킨다. 국 내에서는 1983년 멕시코 세계 청소년 축구대회 당시 고지적응훈련의 일환으 로, 국내에서 마스크를 착용하고 연습한 사례가 있었다. 이 훈련방법은 정신 력 강화라는 심리적 측면에서 효과가 있을 수 있으나, 일반적으로 고지에서 2-3주간을 지속적으로 체류한 후에 순응이 일어난다는 사실과, 순응된 기능 이 저지대로 돌아올 경우 단시간내에 회복된다는 점을 감안할 때, 연습 시에 는 마스크를 착용하는 훈련방법이 동정맥산소교차의 감소로 저산소증을 유 발하는 고지상황에서의 호흡문제를 해결하는 데는 유효하지 않은 것으로 판 단되었다. 따라서 효과적이고 경제적인 고지적응 훈련은 인간기능에 관련된 변수들의 연관관계를 체계적으로 파악하고, 이 변수들을 효과적으로 조절하 여야만 가능할 것으로 평가되었다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2011.11a
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• pp.342-343
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• 2011

미디어 디지털컨버전스 환경에서 교육을 수용하는 도구로서 e-Book은 향후 더 많은 확산이 기대되어진다. 본 연구에서는 학습자의 학습도구로서 e-Book과 종이책의 수용 의도를 뇌파를 분석(자기조절지수, 기초율동지수, 주의지수, 활성지수, 정서지수, 항스트레스지수, 좌우뇌균형지수, 브레인지수 분석)하여 실험하였으며, e-Book을 사용후, 성별에 상관없이 내외적 환경 요인으로 인한 육체적, 정신적 피로도에 대한 저항력을 나타내는 항스트레스 지수가 낮아지는 결과를 얻었다. 향후, 본 연구를 기반으로 개선방향을 찾을 필요가 있다.