• 한국학교보건학회지
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• 제34권2호
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• pp.107-114
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• 2021

Purpose: The aim of this study was to investigate the factors influencing eating attitudes in female nursing students. Methods: A cross-sectional study was conducted on 121 university students in 2016. Data was collected using self reported questionnaires asking about circadian rhythm (Morningness-Eveningness Questionnaire), daytime sleepiness (Epworth Sleepiness Scale), sleep quality (Pittsburgh Sleep Quality Index), and eating attitudes (Eating Attitudes Test-26). Stress resistance was measured with a brain quotient test. The data were analyzed with a t-test, ANOVA, Pearson's correlation analysis and linear regression using SPSS 22.0. Results: Eating attitudes were associated with daytime sleepiness, sleep quality, and stress resistance of the right hemisphere. Among these, daytime sleepiness and sleep quality had a significant effect on eating attitudes. Conclusion: The results of this study suggest that sleep should be taken into account when developing interventions for preventing eating disorders in female nursing students.

• 한국산학기술학회논문지
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• 제17권5호
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• pp.243-250
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• 2016

노화로 인한 신체조성과 혈관탄성의 변화는 심혈관질환에 위험을 증가시킨다. 하지만 리듬운동은 노인들이 쉽고 재미있게 할 수 있는 유산소 운동으로 신체조성과 혈관탄성에 긍정적인 영향을 미칠 수 있을 것이다. 그리하여 본 연구는 고령여성 (>65 years) 대상으로 12주간 리듬운동을 실시한 후 신체조성 및 혈관탄성에 어떠한 효과를 미치는지에 관한 연구이다. 실험 참가자들 (n=20)은 무선할당 방식으로 운동집단 (n=10)과 통제집단 (n=10)으로 나누었다. 12주간에 리듬운동은 주3회 한 회당 60분으로 구성되었고 운동강도는 Borg의 운동자각도(6 - 20)에서 11-14로 설정되었다. 신체조성(근육량과 체지방량), 혈관탄성(맥파속도 (Pulse wave velocity (PWV))은 훈련 전과 후에 측정이 되었다. 연구 결과는 신체조성에서 운동집단의 골격근량 (p=0.04)이 유의하게 증가하였고 혈관탄성인 PWV에 오른쪽 (p=0.002)과 왼쪽 (p=0.02)모두 유의하게 감소하였지만 통제집단에서 골격근량과 맥파속도 (오른쪽과 왼쪽)에 유의한 변화가 없었다. 이러한 변화를 분석한 결과를 통하여 볼 때 여성노인들이 흥미를 가지고 쉽게 따라할 수 있는 리듬운동은 근육량을 증가시키고 혈관탄성에 긍정적인 효과를 주어서 근감소증의 예방과 지연 그리고 심혈관 질환의 위험성을 낮출 수 있는 매우 효과적인 운동이라 할 수 있다.

• Journal of the Korean Data and Information Science Society
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• 제26권1호
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• pp.55-64
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• 2015

학습감각과 뇌 활동의 관계를 규명하기 위해 학습자의 학습감각 유형과 뇌의 분화성 및 통합성에 따른 뇌파 지표에 따라 상호관계성을 규명하였다. 학습자는 시각, 청각, 운동감각을 통해서 정보를 습득한다. 이러한 뇌에 반영되는 학습 감각은 다양한 학습감각의 조합으로 나타나는데 뇌의 분화성과 통합성에 관여하는 학습감각의 유형을 측정하기 위해서는 관련된 학습양식을 규명하는 것이 요구된다. 또한 학습감각에 포함된 자기 주도적 학습은 뇌의 기능에 연계된 문제 중심학습이 통합 뇌로 알려진 균형적인 뇌의 활용을 강조하는 것과 관련이 있다는 것을 보여주고 있다. 본 연구결과는 감각운동리듬 (SMR) 뇌파에서 효과적인 통합뇌 학습이 높은 청각학습과 시각학습에 밀접하게 관련되어 있다는 것을 보여주며 베타파에서는 효과적인 통합뇌 학습이 높은 운동감각과 시각 학습에 밀접하게 관련되어 있다는 것을 보여주었다.

• 수면정신생리
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• 제7권2호
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• pp.115-119
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• 2000

목 적 : 십년 이상 각성장애를 보인 20세 남자환자를 분석하였다. 환자는 두통, 만성피로, 경한 주간졸리움증을 호소하였으나 조절할 수 없는 수면발작, 탈력발작, 입면시 환각이나 수면마비의 병력은 없었다. 방 법 : 야간 수면다원검사 (PSG), 반복적 수면잠복기 검사 (MSLT) 및 조직적합성 유전자검사 (HLA-typing)를 시행 하였다. 결 과 : PSG상 수면잠복기가 짧고 (4분), 렘수면잠복기도 감소하였고 (2.5분), 각성지표 (arousal index)가 시간당 15.7로 약간 증가되었으며, 수면 중 주기적 사지운동지표 (PLMS index)가 시간당 8.1로 관찰되었으나 운동과 연관된 각성지표 (movement arousal index)는 시간당 2.1로 높지 않았다. 잠효율은 (sleep efficiency)는 97.5%로 정상이었다. MSLT상 수면잠복기는 15분 21초로 정상이었으나 sleep-onset REM (SOREM)은 5회의 낮잠 시도 중 4회에서 관찰되었다. HLA-typing에서 DQ6-양성이었는데, 이는 기면증 환자에서 대개 관찰되는 유전자 위치인 DQB1*0602, DQA1*0102와는 다른 DQB1*0601 부위에 상응하였다. 결 론 : 일차성 각성장애의 원인이 되는 여러 질환 특히 일주기리듬장애나 기면증, 원발성 다면증과의 감별진단이 필요하며, 수면검사와 유전자검사 상 기면증의 새로운 변종일 가능성을 배제할 수 없다.

• 말소리와 음성과학
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• 제5권3호
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• pp.3-10
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• 2013

This study investigated the rhythmic accommodation of Korean English learners' interlanguage talk. Twelve Korean speakers, 6 native English speakers and 6 non-native English speakers in London participated in multiple conversations on different topics which produced 36 conversational data in interlanguage talk (ILT) settings. 190 utterances from the 36 conversational data were analyzed to investigate the rhythmic patterns of Korean English learners when they communicated with English speakers with different language backgrounds. Save for the final-syllable, the normalized duration of consecutive syllables was compared in order to derive a variability index (VI). It was found that there was no significant variability in the measurement of the syllable-to-syllable duration for the utterances of Korean English learners, regardless of their interlocutor's language background. Conversely, it was found that there was evidence that Korean English learners showed rhythmic accommodation in ILT when they conversed with non-native English speakers. The speaking rate became significantly slower when Korean English learners talked to non-native English speakers, than when they talked to other Korean English learners. Furthermore, there was a negative correlation between speaking rate and the VI in the utterances of Korean English learners in ILT.

• 한국직업건강간호학회지
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• 제18권1호
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• pp.14-21
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• 2009

Purpose: This study was performed to investigate the effect of shift work on diurnal blood pressure (BP) pattern in nurses. Method: We studied 20 healthy nurses engaged in 3 shift work. 24-hour ambulatory BP monitoring was performed to each nurse two times during the day and night shift. Five nurses were excluded because of inadequate BP measurement. Results: All subjects were female. The mean age was 27.4 years (range: 23-33 years) and mean body mass index was 19.7 Kg/$m^2$ (range: 18.0-21.2 Kg/$m^2$). The changes of systolic BP ($17.8{\pm}9.1$ vs. $13.2{\pm}4.7%$, p=0.031), diastolic BP ($22.3{\pm}8.7$ vs. $17.3{\pm}9.0%$, p=0.061), and heart rate ($25.2{\pm}5.2$ vs. $12.5{\pm}8.7%$, p=0.001) during the sleeping period were decreased after a night shift compared with day shift. The non-dipper group significantly increased from 20% to 40% after a night shift (p=0.018). Conclusion: Working night shift is significantly associated with non-dipper status in nurses.

• 한국응급구조학회지
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• 제9권1호
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• pp.79-87
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• 2005

Purpose: Investigates the results of CPR operation in visited patients with arrest state, and element to affect the results, and it is checks a problem, and it is made to promote. Methods: As for this study, analysis studied the results that operation CPR with the object arrest patients of 69 visited Jecheon Seoul hospital emergency center for during the period from January 2002 to February 2005. It was played writing partly changed In-hospital Utstein Style, and to stick a record in it. Paramedic which participated in CPR directly did the record of a variable, As for the data processing, use SPSS Version 12.0 for Windows. Results: It was male 68.1% female 31.9% for 69 people, and the sex ratio didn't affect return of spontaneous circulation, with female 8 people to male 16 people for ROSC(Return of spontaneous circulation) 24 people. with female 14 people to male 31 people for NROSC(Non-return of spontaneous circulation) 45 people(p>0.05). The initial EKG rhythm was asystole 34.8%, VF 31.9%, The case that initial EKG was VF compared it to a patient of asystole, and a survivor had a lot of VF and there were a lot of survivors(p<0.05). The wasn't relativity between VF and PEA(p>0.05), The CPR lead time was short in ROSC with NROSC $25.0{\pm}15.0$ minutes, ROSC $11.9{\pm}10.7$ minutes(p<0.01). Epinephrine administer time was NROSC $3.0{\pm}4.1$ minutes, ROSC $2.1{\pm}1.9$ minutes(p>0.05). It was survivor 18 people(21.1%) than 24 hours and the PAM Index affected in ROSC. with $9.0{\pm}1.2$ points NROSC, with $1.6{\pm}1.7$ points ROSC(p<0.01). A correlation was high between a CPR lead time and PAM Index(p<0.02), a correlation was examined by being high between ROSC and a CPR lead time, PAM Index(p<0.01).

• Safety and Health at Work
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• 제15권1호
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• pp.9-16
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• 2024

Background: E-waste workers in Hong Kong are handling an unprecedented amount of e-waste, which contains various neurotoxic chemicals. However, no study has been conducted to evaluate the neurological health status of e-waste workers in Hong Kong. This study aimed to evaluate the prevalence of neurobehavioral alterations and to identify the vulnerable groups among Hong Kong e-waste workers. Methods: We recruited 109 Hong Kong e-waste workers from June 2021 to September 2022. Participants completed standard questionnaires and wore a GENEActiv accelerometer for seven days. Pittsburgh Sleep Quality Index and Questionnaire 16/18 (Q16/18) were used to assess subjective neurobehavioral alterations. The GENEActiv data generated objective sleep and circadian rhythm variables. Workers were grouped based on job designation and entity type according to the presumed hazardous level. Unconditional logistic regression models measured the associations of occupational characteristics with neurobehavioral alterations after adjusting for confounders. Results: While dismantlers/repairers and the workers in entities not funded by the government were more likely to suffer from neurotoxic symptoms in Q18 (adjusted odds ratio: 3.18 [1.18-9.39] and 2.77 [1.10-7.46], respectively), the workers from self-sustained recycling facilities also have poor performances in circadian rhythm. Results also showed that the dismantlers/repairers working in entities not funded by the government had the highest risk of neurotoxic symptoms compared to the lowest-risk group (i.e., workers in government-funded companies with other job designations). Conclusion: This timely and valuable study emphasizes the importance of improving the working conditions for high-risk e-waste workers, especially the dismantlers or repairers working in facilities not funded by the government.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2000년도 춘계 학술대회 및 국제 감성공학 심포지움 논문집 Proceeding of the 2000 Spring Conference of KOSES and International Sensibility Ergonomics Symposium
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• pp.62-66
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• 2000

This study investigated the effects of certain specific wavelengths of lighting on the autonomic nervous system (ANS) using the heart rate variability (HRV) as an index. Six subjects with normal color vision participated n this study between 15:00 and 17:00 hr to neutralize any visual differences arising from circadian rhythm. The environmental conditions of the laboratory were maintained in complete darkness and the temperature was equilibrated at 24$\Box$ with a relative humidity of 60%. Subjects were only subjected to light stimulation when the pupil of dyes attained a minimum size of 2 mm by projecting illumination equalized with the same spectral radiance of 500-700 nm with 50-nm internal radiance. HRV was calculated from electrocardiogram (ECG) with systematic respiratory control at 0.35 Hz. The results suggest that illumination with certain wavelengths may induce ANS activation.

• 수면정신생리
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• 제19권1호
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• pp.5-10
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• 2012

The release of hormones and the metabolism of human body are controlled by the circadian rhythm related to sleep-wake cycle. Growth hormone, prolactin, thyroid stimulating hormone, cortisol, glucose, and insulin-secretion rates fluctuate according to the sleep-wake cycle. In addition, sleep is related to the appetite regulation and carbohydrate and other energy metabolism. Hypocretin (orexin), an excitatory neuropeptide, regulates waking and diet intake, and the poor sleep increases diet intake. The short sleep duration increases one's body mass index and impairs the function of the endocrine and metabolism, causing increases in the risk of glucose intolerance and diabetes. The poor sleep quality and sleep disorders have similar impact on the metabolic function. In short, the sleep loss and the poor quality of sleep have a detrimental effect on the endocrine and energy metabolism. The improvement of sleep quality by the future research and appropriate clinical treatment would contribute to the decrease of the metabolic diseases such as diabetes.