• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.2
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• pp.562-570
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• 2019

The purpose of this study was to identify the factors influencing the quality of sleep in breast cancer patients receiving chemotherapy in the outpatient settings. The data were collected from 203 patients with breast cancer receiving chemotherapy in the outpatient settings at one tertiary hospital in B City. Stress, fatigue and depression were negatively correlated with quality of sleep (r=-.369, p=.001; r=-.565, p=.001; r=-.526, p=.001, respectively). Fatigue(${\beta}=-.387$, p<.001) was one of the biggest impact factors on quality of sleep which explained 31.6% of the variance of the sleep quality, followed by the experience of sleep disturbances prior to the diagnosis of breast cancer(${\beta}=-.178$, p<.002) and depression(${\beta}=-.231$, p<.004). In total, all of the antecedent variables explained significantly 37.4% of the variance of the sleep quality. Thus, in order to improve the quality of sleep, integrative nursing interventions need to be developed to reduce fatigue and depression among them, including an proactive system to screen out the patients with the experience of sleep disturbances prior to the diagnosis with breast cancer and to provide adequate pharmacological and/or non-pharmacological sleep interventions prior to the chemotherapy.

• Korean Journal of Adult Nursing
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• v.23 no.4
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• pp.363-373
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• 2011

Purpose: Fatigue is a common problem in Parkinson's disease (PD), affecting 30~65% of patients with that diagnosis. Only recently has fatigue been recognized as an important clinical feature of PD. The aim of this study was to investigate the level of fatigue and related factors in patients with PD. Methods: Between March 1, and September, 30, 2010, a sample of 181 PD patients agreed to be interviewed. Results: The female patients' PFS (Parkinson Fatigue Scale) score was higher than those of the male patients. Household income and having a Job were significantly correlated with the PFS scores. Among the disease characteristics, motor fluctuations, dyskinesia and modified Hoehn and Yahr stage were significantly correlated with the PFS scores. On stepwise regression analysis, the most important factors related to the PFS scores were depression and sleep disturbance. Conclusion: Fatigue in patients with PD was associated with many factors and strongly associated with depression and sleep disturbance. Fatigue is a multidimensional construct; therefore, multidimensional strategies for relieving specific aspects of fatigue are needed.

• Journal of Navigation and Port Research
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• v.38 no.5
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• pp.479-484
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• 2014

This paper presents the crew members fatigue survey in order to understand the current state of various fatigue causal factors and personnel fatigue subjective symptoms, and then analyzes the survey items. The results of this survey are as follows. Firstly, many crew members were struggling with the lack of sleep and rest hour. Secondly, environmental factors such as weather, ship motion and vibration, noise, accommodation condition etc. disturbed the sleep of crew members. In third, their duty hours were more than 10 hours per day in certain types of ship. In fourth, they felt fatigue a lot when they were on board because of the workload and stress. Lastly, in some measurement items of fatigue symptoms(physical, mental, emotional), many crew members were experiencing more than moderate fatigue symptoms.

• Sleep Medicine and Psychophysiology
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• v.9 no.2
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• pp.122-126
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• 2002

Objectives: The purpose of this study is to investigate the effects of the 37-hour sleep deprivation on visual discrimination using the Cybernetic Flicker Fusion Analyzer (FLIMK) and to see the correlation between this finding and various subjective scale scores. Methods: Twenty six subjects (20 men 6 women, $24.50{\pm}1.45$ years of age) participated in this study. Subjects remained awake for 37 hours under continuous surveillance. In the morning and evening of two study days, the FLIMK and the self-reporting scale of sleepiness, fatigue, anxiety and mood states were instituted. Results: In FLIMK, the flicker fusion threshold was significantly decreased after sleep deprivation (F=7.66, p=0.01). The number of trials (responses) before reaching fusion frequency threshold was significantly increased after sleep deprivation (F=13.16, p=0.001). The reduction of fusion frequency was correlated with the increase of sleepiness and fatigue (p<0.05), and the number of the trials was correlated with the scores of negative mood, anxiety, and fatigue (p<0.05). Conclusions: These results suggest that 37 hour total sleep deprivation cause the decrement in visual discrimination. The decrease of the fusion frequency after sleep deprivation was correlated with sleepiness and fatigue. Further study is needed to enlighten the biological mechanism of the decrement in visual function after sleep deprivation.

• Korean Parent-Child Health Journal
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• v.4 no.1
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• pp.1-18
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• 2001

Fatigue after delivery affect women's birth experience and interrupt the process of labor. Finally woman cannot have a positive birth result and will experience a postpartum fatigue. But researches about fatigue during the labor are lacked. Nurse help adapting a mother's role, bonding with new baby, recovering after birth, and improving woman's quality of life through decreasing fatigue during the labor and intercepting a continued postpartum fatigue. So it is very important that measuring a fatigue and confirming relationships between fatigue and factors affecting fatigue. The purpose of this study was measuring the level of fatigue within 4hours after delivery and identifing factors affecting fatigue. The ultimate goal was to contribute to improving a birth experience and adapting after birth through decreasing the level of fatigue and interventions. The data was collected for this study at the hospital of two universities and the third hospital in Seoul from Aug. 15. to Nov. 10. 2000. The subjects were 106 of mothers who deliveried a normal newborn and were tested within four hours after birth. The instruments were The Visual Analogue Scale for fatigue, The State Anxiety Inventory, and The Labor Support Inventory. The data were analyzed by using percentage, mean, SD, t-test, ANOVA, Pearson correlation. The results of this study were as follows; (1) The level of fatigue during the labor was 61.48point. (2) The deferences according to general and obstetric character affecting fatigue founded that there were Significant differences according to job(t=2.659, p=0.009), and the type of delivery(t=-2.035, p=0.044). (3) The deferences according to factors affecting fatigue revealed that there was significant difference according to quality of sleep(F=2.935, p=0.037). The significant fatigue and the fatigue after delivery was anxiety(r=0.343, p=0.000). The above findings indicate that the level of fatigue during the labor is higher than during pregnancy and postpartum. Woman having a job, delivering by vacuum was more fatigued. The level of fatigue according to a quality of sleep was significant difference. The poor quality of sleep, higher level of fatigue. And the more anxiety after delivery, the more fatigue. So, the variable nursing interventions for lessening the level of fatigue through appling the situation for rest, relaxation during the labor to reserve energy, and decreasing anxiety should be provided for mothers.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.5
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• pp.2230-2240
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• 2011

This study was performed to determine the depression and its association with sleep quality, occupational stress and fatigue among small-scale manufacturing male workers. The self-administered questionnaires were given to 856 workers under 50 members of manufacturing industries during the period from April 1st to June 30th, 2010. As a results, the distribution of depression group(21 point and over at CES-D score) among all subjects were 44.3%, and it was positively correlated with occupational stress, fatigue and quality of sleep. With the analysis of covariance structure, occupational stress(KOSS) was more influential on the depression than quality of sleep and fatigue. It was found to have the inter-relational effects that the higher the occupational stress(KOSS) and fatigue(MFS), and the lower the quality of sleep, the higher the depression. Thus the effective strategy for depression reduction among workers requires the efforts to improve the work environment and job contents.

• The Korean Journal of Emergency Medical Services
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• v.22 no.3
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• pp.149-162
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• 2018

Purpose: The purpose of the study was to investigate the differences in quality of sleep, job stress, fatigue, job satisfaction, and posttraumatic stress disorder (PTSD) according to the type of work in fire-fighting officers. Methods: This study used an online questionnaire. The participants were 322 fire-fighting officers. The data were collected from May 2 to 20, 2018. Data were analyzed using SPSS 22.0. Results: According to the work styles of fire fighting officers, job stress, job satisfaction, and PTSD showed significant differences. However, There were no differences in sleep quality and fatigue. There were significant differences in job stress, job satisfaction, and PTSD in those in roles of fire suppression and rescue emergency medical technicians and this result suggests a way to improve the quality of sleep, job stress, job satisfaction and fatigue for fire-fighting officers who suffer from PTSD. Conclusion: Based on the results of this study, mental health of fire-fighting officers will be improved through basic data for psychotherapy which can overcome the quality of sleep, job stress, fatigue, job satisfaction and PTSD according to the work style of fire-fighting officers.

• Proceedings of the Korea Society of Information Technology Applications Conference
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• 2005.11a
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• pp.243-246
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• 2005

Recent ubiquitous computing environments increasingly impact on our lives using the current technologies of sensor network and ubiquitous services. In this paper, we propose ubiquitous architectural framework for ubiquitous sleep aid service(UbiSAS) in the subset of ubiquitous computing for refreshing of human's sleep. And we examine technical feasibility. Human can recover his health through refreshing sleep from fatigue. Ubiquitous architectural framework for UbiSAS in digital home offers agreeable sleeping environment and improves recovery from fatigue. So we present new concept of ubiquitous architectural framework dissolving stress. Specially, we apply context to context-aware framework module. This context is transferred to context adaptive inference engine which has service invocation function in intelligent agent module. Ubiquitous architectural framework for UbiSAS using context adaptive rule inference engine without user intervention is technical issue. That is to say, we should take sleep comfortably during our sleeping. And sensed information during sleeping is changed to context-aware information. This presents significant information in context adaptive rule inference engine for UbiSAS. This information includes all sleeping state during sleeping in context-aware computing technique. So we propose more effective and most suitable ubiquitous architectural framework using context adaptive rule inference engine for refreshing sleep in this paper.

• Women's Health Nursing
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• v.13 no.4
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• pp.299-309
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• 2007

Purpose: The purpose of this study was to compare the predictors between the early and late postpartum period in parturient women. Methods: The Subjects were 399 healthy postpartum women who visited the obstetric clinic at 5 hospitals for a routine check up after childbirth. They were divided into two groups: one was in the early postpartum period, the first three weeks after childbirth (n=107), the other was in the late postpartum period, four to six weeks after childbirth (n=292). The data were collected by using a self-report questionnaire from July to September, 2006. The data were analyzed with the SPSS 12.0 Win program. Results: There were significant statistical differences in age and parity between the two groups. Postpartum fatigue was significantly predicted by postpartum depression and age in the early period, and postpartum depression, sleep satisfaction, and childcare stress in the late period. The mean scores of childcare stress and perceived infant difficulty in the late period were significantly higher than those of the early postpartum period. Conclusion: Postpartum depression was the most important predictor of postpartum fatigue regardless of the postpartum period. In addition, especially in the late period, sleep satisfaction and childcare stress were significant predictors of postpartum fatigue. Based on these results, primary nursing interventions for reducing postpartum fatigue should focus on postpartum depression management, and nursing interventions for increasing sleep satisfaction and decreasing childcare stress would be helpful for management of postpartum fatigue in parturient women in the late period.

• The Journal of the Korea Contents Association
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• v.16 no.2
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• pp.456-466
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• 2016

The purpose of this study was to identify factors affecting clinical practice-related fatigue among undergraduate nursing students. The data were collected from a questionnaire distributed among 129 juniors and seniors (3rd and 4th year students) in nursing college at the G city, who were at the end of clinical practice. Multiple regression analysis found that the significant major predictors of clinical practice-related fatigue among nursing students were sleep quality (${\beta}=.30$), anxiety (${\beta}=.26$), exercise frequency (${\beta}=-.21$) and clinical practice stress (${\beta}=.19$). These variable factors could explain 33.6% of clinical practice-related fatigue among nursing students. This study suggests that sleep quality, anxiety, exercise frequency, and clinical practice stress are significant factors of clinical practice-related fatigue among nursing students. Therefore, strategies improving sleep quality and exercise and managing anxiety and stress should be developed to reduce the fatigue for nursing students during clinical exposure.