• Journal of Life Science
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• v.12 no.4
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• pp.375-382
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• 2002

The purpose of this experiment was to examine influence of acute exercise on nocturnal sleep which had been disrupted by caffeine(400mg$\times$3) thought the daytime. Six healthy young males aged 21.0$\times$0.2 yr with a history of low caffeine use. Subjects completed three conditions in a within-subject. At three conditions Sleep EEG were investigated: (1) nocturnal following quiet rest, (2) nocturnal sleep following the consumption of 1200mg of caffeine (3) nocturnal sleep following cycling at 60 min of 60% V $O_{2peak}$ with 1200mg of caffeine consumption. Sleep data were calculated for REM sleep, REM latency, sleep onset latency, sleep efficiency, sleep stages, SWS. Those data were analyzed using repeated-measures ANOVA of change scores. A main effect to, drug(caffeine) indicated that caffeine elicited sleep disturbance that is, TST and sleep onset latency increase and sleep efficiency and stage 4 decrease. The effects of exercise on sleep following caffeine intake generally improve sleep that is, stage 2, 3 and SWS increase and sleep onset latency decrease. A condition effect for sleep indicated sleep improvement after exercise Therefore The data supported a restorative theory of slow-wave sleep and suggest that acute exercise may be useful in promoting sleep and reducing sleep disturbance elevated by a high dose of caffeine.

• Science of Emotion and Sensibility
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• v.2 no.1
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• pp.95-103
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• 1999

침대에서의 체압분포는 수면 안락감에 중요한 영향을 미치는 요인중의 하나로 고려되어져 왔다. 체압분포는 사람의 몸무게에 의하여 침대와 누운사람 사이의 접촉면에서 발생하는 압력의 분포를 말한다. 안락한 체압분포 패턴을 결정하기 위하여 사용자가 침대 8부분의 높이를 조절할 수 있는 가변침대를 사용하였다. 체압분포 측정은 각 수면자세(바로 누운 자세, 옆으로 누운 자세, 엎드린 자세)에서 가변침대의 초기상태와 피실험자가 편안한 체압분포 패턴을 유지하도록 높이를 조절한 상태에서 이루어졌다. 본 연구에서는 각 수면자세에서 체압비와 선호하는 체압비의 특징을 알아보았다. 본 연구의 결과를 요약하면 다음과 같다. - 각 수면자세에서 엉덩이 부분의 체압비가 가장 높았으며, 바로 누운 자세는 40% 이상의 체압비가 엉덩이에 집중한다. - 각 수면자세에서 전체적으로 머리와 다리의 높이가 다른 부분보다 높은 것을 선호하는 경향을 나타난다. - 바로 누운 자세에서는 유추를 기준으로 신체가 W형이 되도록 머리, 요추, 대퇴부분의 높이를 올리는 것을 선호한다. - 엎드린 자세는 머리와 다리부분의 높이를 증가시킴으로써 신체이 곡선이 U형이 되도록 하는 것을 선호한다.

• Cartoon and Animation Studies
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• s.24
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• pp.135-154
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• 2011

Simulacra theory as propounded by Jean Baudrillard in his seminal treatise, "Simulacra and Simulation," explores the significance of images, media and art in contemporary culture. Its central theoretical premise is the simulacrum, a sign or symbol that plays a crucial role in constructing perceived reality but which lacks a real-world referent. In Michel Gondry creates simulacra in the form of hallucinatory dream imagery by combining stop-motion animation and live-action elements. As experimental film-making that combines analog and minimum digital technologies, the result is a tour-de-force of synchronization. This study analyzes the film's technique and expressive content and, by adopting simulacra theory as a conceptual framework, aims to provide a better understanding of Gondry's work.

• The Journal of Korean society of community based occupational therapy
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• v.8 no.3
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• pp.69-76
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• 2018

Objective : The study was to investigate the neurophysiological approach to the effect of complex exercise on memory, one of brain functions, and the degree of sleep disorder using experimental animals with sleep disorders. Methods : This study carried out a complex exercise that designed in an animal laboratory for 4 days to 16 sleep - disordered model rats. After the exercise, brain function was confirmed with the changes of BDNF in the hippocampus and the change of sleep level was confirmed with the concentration of melatonin in the blood. Results : First, the effect of the complex exercise program on brain function was significantly increased in the experimental group(p<0.01). Second, the effect of complex exercise program on sleep disturbance was significantly increased in the experimental group and control group(p<0.01)(p<0.05). Conclusion : The rate of increase of the elderly in the community is rapidly increasing, and the sleep disorder of the elderly can affect the quality of life of these elderly people. Secondary memory impairment due to sleep disturbances can also be a problem. Although there are many ways to improve sleep disturbance, it has been scientifically proven through experimental animals that sleep and memory can be improved with complex exercise that is not economically, spatially burdensome.

• Journal of the Korean Applied Science and Technology
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• v.39 no.1
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• pp.74-83
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• 2022

The purpose of this study was to investigate the effects of dysmenorrhea and stress on quality of sleep in nursing students. The subjects of this study were 248 nursing students and data collection was from April 20 to May 18, 2021. Data was analyzed using the SPSS/WIN 24.0 program by descriptive statistics, Pearson's correlation, multiple regression analysis. There was a positive correlation between dysmenorrhea(r=.20, p<.001) and stress(r=.24, p<.001). Grade, stress and dysmenorrhea were found to be factors influencing quality of sleep among nursing students. The results of this study suggest that it is necessary to develop some programs that include factors such as grade, stress and dysmenorrhea for nursing students' quality of sleep.

• Journal of the korean academy of Pediatric Dentistry
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• v.46 no.1
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• pp.38-47
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• 2019

The most common cause of mouth breathing is obstacles caused by mechanical factors in upper airway. Mouth breathing could be consequently pathological cause of sleep-disordered breathing. Sleep-disordered breathing in children can cause growth disorders and behavioral disorders. The purpose of this study was to investigate relationship between upper airway and sleep-disordered breathing in children with mouth breathing. Twenty boys between 7 - 9 years old who reported to have mouth breathing in questionnaire were evaluated with clinical examination, questionnaires, lateral cephalometric radiographs, and portable sleep testing. This study assessed apnea-hypopnea index (AHI) and oxygen desaturation index (ODI) for the evaluation of sleep-disordered breathing and was done to investigate the correlation between these values and the upper airway width measured by lateral cephalometric radiographs. There was no significant correlation with the size of the tonsils (p = 0.921), but the adenoid hypertrophy was higher in the abnormal group than in the normal group (p = 0.008). In the classification according to AHI and ODI, retropalatal and retroglossal distance showed a statistically significant decrease in the abnormal group compared to the normal group (p = 0.002, p = 0.001). As AHI and ODI increased, upper airway width tended to be narrower. This indicates that mouth breathing could affect the upper airway, which is related to sleep quality.

• Sleep Medicine and Psychophysiology
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• v.28 no.1
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• pp.18-26
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• 2021

Sleep is essential to brain function and mental health. Insomnia and obstructive sleep apnea (OSA) are the two most common sleep disorders, and are major public health concerns. Proton magnetic resonance spectroscopy (¹H-MRS) is a non-invasive method of quantifying neurometabolite concentrations. Therefore, ¹H-MRS studies on individuals with sleep disorders may enhance our understanding of the pathophysiology of these disorders. In this article, we reviewed ¹H-MRS studies in insomnia and OSA that reported changes in neurometabolite concentrations. Previous studies have consistently reported insomnia-related reductions in γ-aminobutyric acid (GABA) levels in the frontal and occipital regions, which suggest that changes in GABA are important to the etiology of insomnia. These results may support the hyperarousal theory that insomnia is associated with increased cognitive and physiological arousal. In addition, the severity of insomnia was associated with low glutamate and glutamine levels. Previous studies of OSA have consistently reported reduced N-acetylaspartate (NAA) levels in the frontal, parieto-occipital, and temporal regions. In addition, OSA was associated with increased myo-inositol levels. These results may provide evidence that intermittent hypoxia induced by OSA may result in neuronal damage in the brain, which can be related to neurocognitive dysfunction in patients with OSA. The current review summarizes findings related to neurochemical changes in insomnia and OSA. Future well-designed studies using ¹H-MRS have the potential to enhance our understanding of the pathophysiology of sleep disorders including insomnia and OSA.

• Science of Emotion and Sensibility
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• v.3 no.2
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• pp.75-84
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• 2000

문명의 발달과 함께 수면부족으로 인한 여러 가지 스트레스와 질환이 증가하게 되어 최근 수면연구에 대한 관심이 증가하고 있다. 본 연구는 다양한 온열환경 조건에서의 쾌적한 수면을 위한 온열환경을 제시하기 위해, 5명의 여성 피험자를 대상으로 22$^{\circ}C$, 26$^{\circ}C$, 3$0^{\circ}C$의 일정온도 조건과 $25^{\circ}C$에서 1시간 후와 2시간 후에 각각 1, 2$^{\circ}C$를 상승시켜주는 변동온도 조건하에서 수면생리신호를 측정하였다. 그리고, 수면단계 평가를 이용하여 총 수면시간, 깊은 수면의 비율, 그리고 최초 수면시작 시간에서 최초의 서파 수면이 나타나기까지의 지연시간 등의 수면효율을 평가하였다. 그 결과, 일정온도 조건에서는 26$^{\circ}C$에서 총 수면시간(466.7$\pm$10.25분)과 깊은 수면의 비율(33.1$\pm$4.95%)은 타 조건에 비해 높게 나타났고, 최초 서파수면까지의 지연시간(9.8$\pm$3.33분)은 타 조건에 비해 낮게 나타나 쾌적한 수면을 위한 가장 적절한 온열조건임을 관찰할 수 있었다. 그리고 변동온도 조건에서는 4가지 온열조건간에는 큰 차이가 나타나지 않았지만, 모든 조건에서 일정온도 조건보다는 좋은 결과를 나타내었다. 또한 수면 중 신체 움직임과 설문 분석에서도 동일한 결과를 보였다. 본 연구를 통해, 수면생리신호를 이용한 수면 쾌적성 분석은 수면의 질적인 상태를 관찰하는데 매우 적합한 파라메터를 도출할 수 있으며, 여러 가지 수면환경 조건을 평가하는데 매우 유용한 지표가 될 수 있음을 보였다.e results suggest that hCG treatment at 7 days after insemination could be used to increase the pregnancy rate of embryo transfer, and transfer, and only the recipients with PUN concentration of <12 mg/dl were influenced by treatment with hCG./TEX>이었으며, 이는 화성 기원을 지시한다.sucrose를 이용한 2단계 희석이 수정란의 생존성을 향상시키는 것으로 나타났다. 또한 발육 단계별 생존성에 있어서는 발육이 진전된 확장배 반포 시에 동결하는 것이 배반포기에 동결하는 것 보다 유리한 것으로 나타났다.ody를 사용하여 flow cytometery해석을 실시하는 한편 125I-hGH binding assay에 의하여 hGH binding activity를 측정하였다. 최종적으로 GH signal transduction의 target genedf으로 알려져 있는 serine protease inhibitor 2.1(Spi 2.1) gene의 promotor activity를 검토한 결과 hGHR을 transfect한 CHO Cell에 있어서 hGH의 농도에 의존적으로 증가되었다. 따라서 본 실험에서 cloning한 cDNA hGHR는 native hGHR와 같은 기능을 가지는 것으로 판명되었다.것으로 판명되었다..ments of that period left both in Japan and Korea. "Hyojedo" in Korea is supposed to have been influenced by the letter design. Asite- is also considered to

• Korean Journal of Clinical Laboratory Science
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• v.47 no.3
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• pp.97-104
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• 2015

Sleep is not only an essential physiological function, but also serves important roles in promoting growth, maturation, and overall health of humans. There is increasing interest regarding the impact of sleep and its disorders on the regulation of inflammatory processes and end-organ morbidities, particularly in the context of metabolic and cardiovascular diseases (CVD) and their complications. Obstructive sleep apnea syndrome (OSAS) is an increasingly common health problem in children. In the last decade, the emergence of increasing obesity rates has further led to remarkable increases in the prevalence of OSAS, along with more prominent neurocognitive, behavioral, cardiovascular and metabolic morbidities. Although the underlying mechanisms leading to OSAS-induced morbidities are likely multifactorial and remain to be fully elucidated, activation of inflammatory pathways by OSAS has emerged as an important pathophysiological component of the end-organ injury associated with this disorder. To this effect, it would appear that OSAS could be viewed as a chronic, low-grade inflammatory disorder. Furthermore, the concurrent presence of obesity and OSAS poses a theoretically increased risk of OSAS-related complications. In this study, we will critically review the current state of research regarding the impact of insufficient and disrupted sleep and OSAS on the immune processes and inflammatory pathways that underlie childhood OSAS as a distinctive systemic inflammatory condition in children, and will explore potential interactions between OSAS and obesity.

• Journal of Korea Entertainment Industry Association
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• v.15 no.7
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• pp.159-168
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• 2021

The purpose of this study was to analyze the effects for lifestyle, stress and life satisfaction on sleep quality in university students. The participants were 46 university students attending the department of occupational therapy. Participants responded to responses to the lifestyle questionnaire and Morning and Evening Questionnaire-Korean version(MEQ-K). The levels of stress and life satisfaction reported by participants were obtained using the Korean version of Perceive Stress Test-4(K-PSS-4) and Korean version of Satisfaction With Life Scale(K-SWLS). The quality of sleep was assessed using Korean Modified Leeds Evaluation Questionnaire(KMLSEQ). An independent t-test, Pearson correlation analysis, and multiple regression analysis were performed to investigate factors related to quality of sleep. The analysis of correlations between health status, morning type of chronotype, and life satisfaction showed a significant positive correlation between quality of sleep. As a result of analyzing the quality of sleep according to the chronotype, the main family house and dormitory group showed higher sleep quality than the boarding group. As a result of the multiple regression analysis, the chronotype predicts quality of sleep. This study could provide information to improve the quality of sleep for university students by identify factors affecting sleep for university students in occupational therapy.