• Journal of The Korean Society of Integrative Medicine
• /
• v.10 no.3
• /
• pp.53-62
• /
• 2022

Purpose : This research is a descriptive study that aimed to identify the levels of health promotion behaviors, fatigue, and depression of nursing students and confirm the effect of health promotion behaviors on fatigue and depression. Methods : Data were collected from September 27 to October 15, 2021 through survey questionnaires on 178 nursing students of 2 universities in G-do who voluntarily agreed to participate. The collected data were analyzed using SPSS 23.0, the general characteristics of nursing students were analyzed by frequency and percentage, and the levels of their health promotion behaviors, fatigue, and depression of nursing students was analyzed by mean and standard deviation. The relationship among the health promotion behaviors, fatigue, and depression was analyzed by Pearson's Correlation Coefficient. Multiple regression analysis was performed for the effects of health promotion behaviors on fatigue and depression of nursing students. Results : The nursing students' health promotion behaviors averaged 2.25±.43 points out of 5, and for each sub-factor, interpersonal relationship was the highest at 2.66±.49 points and physical activity was the lowest at 2.01±.60 points. Fatigue was 4.89±1.02 points out of 7 and depression was 10.52±9.10 points out of 63. A statistically significant correlation was found among health promotion behaviors, fatigue, and depression. Health promotion behaviors that significantly affected fatigue were stress management (𝛽=-.263, p=.004) and physical activity (𝛽=-.208, p=.026), which showed 35 % explanatory power on fatigue. Health promotion behaviors that significantly affected depression were spiritual growth (𝛽=-.342, p=.002), and physical activity (𝛽=-.231, p=.016), which showed 31 % explanatory power for depression. Conclusion : This study is meaningful in that it provided basic data to develop an effective health promotion behavior program to prevent and manage nursing students' fatigue and depression, by identifying and analyzing the sub-factors of health promotion behaviors affecting their fatigue and depression.

• Korean Journal of Adult Nursing
• /
• v.28 no.1
• /
• pp.106-115
• /
• 2016

Purpose: This study aimed to investigate sleep, fatigue, and the level of health promoting behaviors in Korean army soldiers. The factors influencing on health promoting behaviors of soldiers were also identified. Methods: A cross-sectional descriptive survey design was used. Data was collected from 269 soldiers in four military units of Korea in July 2015. Verran and Snyder-Halpern Sleep Scale, Fatigue Severity Scale, and Health Promoting Lifestyle Profile-II were used. Results: The health promoting behaviors were significantly different by perceived health status (p<.001) and presence of fatigue (p<.001). There were significant correlations between quality of sleep, fatigue, and health promoting behaviors of the subjects. In a multiple linear regression analysis, the level of health promoting behaviors were lower in the subjects with high level of fatigue (p<.001) and with fair perceived health status (p=.003). Conclusion: In order to increase health promoting behaviors of soldiers, it takes into account of soldiers' fatigue and perceived health status. Environmental arrangement for soldiers for the break time is needed urgently to decrease their fatigue as well as to improve their sleep quality.

• Journal of Korean Academy of Fundamentals of Nursing
• /
• v.16 no.1
• /
• pp.83-91
• /
• 2009

Purpose: The purpose of this study was to compare fatigue and fatigue-regulation behaviors in undergraduates courses related to public health (group A) and undergraduates in courses not related to public health (group B). Method: Using a structured questionnaire, data were collected from 236 undergraduates. Descriptive statistics, Pearson correlation coefficient, t-test with SAS package were used for data analysis, Results: There was a statistically significant difference between group A and group B in t-test comparison by group for fatigue, and all subcategories of fatigue and fatigue-regulation behaviors. The frequency of fatigue-regulation behavior of group A was 12.23 and the mean for total efficiency of fatigue-regulation behavior was 2.17, while the frequency of fatigue-regulation behavior for group B was 10.47 and the mean for total efficiency of fatigue-regulation behavior was 1.75. Finally, total fatigue and all subcategories of fatigue were positively related to fatigue-regulation behaviors. Conclusion: It is necessary to develop an intervention program for regulating fatigue in undergraduates courses related to public health.

• Journal of muscle and joint health
• /
• v.6 no.1
• /
• pp.51-72
• /
• 1999

The purpose of this study is to compar self-reported fatigue and fatigue-regulating behaviors of rheumatoid arthritic patients and normal persons. This study collected the data from 75 rheumatoid arthritic patents visited the departments of internal medicine or orthopedics of four general hospitals T-city and K-city by means of direct interview and questionnaires. in this study also collected data from 75 normal persons who had not been exposed to any other disease in T-city and K-city by means of direct interviews anti questionnaires which were conducted by two trained nurses. This experiment was conducted from August 1, 1998 to October 15, 1998. This study used both MAP(Multi-Dimentional Assessment of Fatigue) developed by Belza(1995) to measure fatigue and the measurement developed by Kwon, Young-Eun to investigate fatigue regulating behaviors. The collected materials were analyzed by means of descriptive statistics, t-test, and the ANCOVA according to the SPSS PC+ program. The findings are as follows : 1. There was the statistically significant difference(t =5.07, p=.000), between rheumatoid arthritic patients(32.76 points) and normal persons(25.81 points) in t-test comparison by group about fatigue. A fatigue degree of rheumatoid arthritic patient group was high in five kinds of lower realms such as common fatigue degree, fatigue severity to be experienced, distress due to fatigue, daily fatigue degree, and fatigue timing at the last week by dimension. 2. There was the significant difference in the number of fatigue-regulating behaviors between rheumatoid of fatigue arthritic patients(9.37 times) and normal persons (8.15 times), but there wasn't any significant difference in the efficiency between rheumatoid arthritic patients(2.85 points) and normal persons (2.78 points) This research suggests two kinds of things as follows : 1. It is necessary to develop an educational program for improving efficiency of fatigue-regulating behaviors as well as some nursing arbitration measures for reducing fatigue of rheumatoid arthritic patients. 2. It is necessary for the future studies to continuously grasp characteristics of fatigue by gender variable by selecting more rheumatoid arthritic male patients.

• Journal of Korean Academy of Nursing
• /
• v.37 no.3
• /
• pp.365-372
• /
• 2007

Purpose: The purpose of this study was to identify degrees of fatigue and influencing factors for fatigue in cancer patients. Method: Data was collected by questionnaires from 115 cancer patients at 3 hospitals in Seoul. The research instruments utilized in this study were fatigue, physical symptoms, depression, family support, and health promoting behaviors. Data was analyzed using the pearson correlation, t-test, ANOVA, and stepwise multiple regression with SPSS/WIN 12.0. Result: The mean score of fatigue for cancer patients was 12.90(range: 6-36). Fatigue for cancer patients according to age group and weight change showed a significant difference. Fatigue for cancer patients showed a significantly positive correlation to physical symptoms and depression. There was a negative correlation between family support and health promoting behaviors. The significant factors influencing fatigue for cancer patients were physical symptoms, health promoting behaviors, depression, and age group, which explained about 45.9%. Conclusion: The results suggest that symptoms and depression management, nursing interventions and practices for providing health promoting behaviors according to age are needed to manage the fatigue in cancer patients.

• Journal of the Korean Society for Precision Engineering
• /
• v.17 no.5
• /
• pp.160-167
• /
• 2000

In this research, the fatigue behaviors of carbonitrided Cr-Mo(SCM415) steel are examined. From fatigue test results, we propose a modified fatigue strength evaluation model and modified formulae. That is, we develop improved models fur evaluating and predicting the fatigue strength of carbonitrided SCM415 by modifying specific terms in the Murakami and Endo's model which is the representative fatigue strength evaluation formulae fur high strength steel.

• Korean Journal of Occupational Health Nursing
• /
• v.28 no.4
• /
• pp.293-299
• /
• 2019

Purpose: This study aimed to identify the factors that affect the health promotion behaviors of shift workers. Methods: Using self-administered questionnaires, data were collected between August 13th and 31st, 2018. Descriptive statistics were computed, and t-test, analysis of variance, and correlational and multiple stepwise regression analyses were conducted using International Business Machines Corporation (IBM) Statistical Package for the Social Sciences (SPSS) version 22. Results: Health promotion behaviors were significantly and positively correlated with psychological well-being (r=.491, p<.001), fatigue (r=.170, p=.030), and self-efficacy (r=.520, p<.001). Psychological well-being (${\beta}=.249$, p=.014), fatigue (${\beta}=.179$, p=.007), and self-efficacy (${\beta}=.335$, p=.001) had significant effects on health promotion behaviors and together explained 31.7% of the variance. Conclusion: A systematic educational program that enhances psychological well-being should be developed and implemented to nurture health promotion behaviors among shift workers. Additionally, an intervention program that can enhance health promotion behaviors should be implemented to improve self-efficacy and prevent fatigue among shift workers.

• The Research Journal of the Costume Culture
• /
• v.29 no.4
• /
• pp.505-521
• /
• 2021

This study analyzed the effects of consumer confusion on shopping fatigue and negative purchasing behaviors in an internet shopping environment. Further, the effects of shopping fatigue on negative purchasing behaviors were analyzed. The survey was conducted among consumers in their 20s and 40s in the Seoul metropolitan area who had experience of purchasing fashion products through internet shopping. A total of 392 questionnaire were analysis, with frequency, reliability, factor, correlation, and regression analysis completed using the SPSS statistics program. The results of the study showed that consumer confusion and shopping fatigue in internet shopping environment affected negative purchasing behaviors. First, consumer confusion comprised overload confusion, similarity confusion, and ambiguity confusion. It was found that overload confusion and similarity confusion significantly affected shopping fatigue. Second, shopping fatigue significantly affected negative purchasing behaviors, and an increased level of shopping fatigue result in, increased purchase delay and non-purchase behavior. Third, consumer confusion (overload confusion, similarity confusion, ambiguity confusion) significantly affected purchase delay behavior, while similarity confusion and ambiguity confusion significantly affected non-purchasing behavior. These results will provide useful data for e-CRM and marketing directions of internet companies and will contribute to rational decision-making of internet consumers and improve the quality of consumer life.

• Structural Engineering and Mechanics
• /
• v.82 no.3
• /
• pp.369-383
• /
• 2022

In this study, an equivalent boundary conditions (BCs) determination method is developed numerically for a panel reinforced concrete (RC) slab to realistically analyze the deformation and fatigue behaviors of a bridge RC slab. For this purpose, a finite element analysis of a bridge RC slab is carried out beforehand to calculate the stiffness of the bridge RC slab, and then the equivalent BCs for the panel RC slab are determined to achieve the same stiffness at the BCs to the obtained stiffness of the bridge RC slab at the corresponding locations of the bridge RC slab. Moreover, for the simulation of fatigue behaviors, fatigue analysis of the panel RC slab is carried out employing a finite element method based on a numerical model that considers the bridging stress degradation. Both the determined equivalent BCs and the BCs that have been typically applied in past studies are employed. The analysis results confirm that, in contrast to the panel RC slab with typically used BCs, the panel RC slab with equivalent BCs simulate the same bending moment distribution and deformation behaviors of the bridge RC slab. Furthermore, the equivalent BCs reproduce the extensive grid crack pattern in the panel RC slab, which is alike the pattern normally witnessed in a bridge RC slab. Conclusively, the panel RC slab with equivalent BCs behaves identical to the bridge RC slab, and, as a result, it shows more realistic fatigue behaviors observed in the bridge RC slab.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.22 no.2
• /
• pp.134-140
• /
• 2014

The paper presents an overview of the present state of study on the fatigue behaviors at very high number of cycles ($N_f$ > $10^7$). A classification of materials with typical S-N curves and influencing factors such as notches, residual stresses, temperatures, corrosion environments and stress ratios are given. The microstructural inhomogeneities of materials and micro-cracks played an important roles in very high cycle fatigue behaviors. The failure mechanisms for the fatigue design of materials and components are mentioned.