• 대한안전경영과학회지
• /
• 제10권2호
• /
• pp.15-24
• /
• 2008

This study was to investigate the relationship of VDT(visual display terminal) work condition and fatigue severity in the financial office workers. Questionnaires were completed by 662 persons in VDT workers of Post Office from January to May 2006. Multidimensional Fatigue Scale(MFS) that was developed in Korea Occupational Safety &Health Agency to estimate the degree of fatigue was used for study. In results, 149 persons(22.5%) in VDT workers were felt low fatigue severity, 351 workers(53.0%) were middle, and 162 workers (24.5%) were high. So it was appeared that one in four VDT workers felt the high fatigue severity. And woman VDT workers felt more fatigue severity than man. Also, fatigue severity was increased with increasing work time. Our findings suggest that VDT workers in financial office need proper health program to prevent occupational fatigue and disease.

• Journal of Ship and Ocean Technology
• /
• 제3권3호
• /
• pp.1-12
• /
• 1999

Spectral fatigue damage calculations has been performed on four ships in order to assess the effect that the probabilistic modeling of sea states has on the estimated fatigue life. The damage estimation method is based on the Miner- Palmgren fatigue damage formulation and a spectral approach is used to determine the necessary variances of the stress processes. Both the horizontal and vertical hull girder bending induced stress process together with the local water pressure induced stress process is taken into account. The wave scatter diagrams are applied in the calculations and their fatigue severity is assessed by analyzing the results obtained with the ten scatter diagrams and the four ships. All four ships are analyzed both in full load and ballast conditions and while traveling at both full and reduced speed. It is found that the fatigue severity of a wave scatter diagram is dependent on several parameters, some of these being the extreme wave hight extrapolated from the scatter diagram and the mean zero up-crossing period in conjunction with the ship length . Based on these three parameters and expression is derived in order to calculate one single number describing the fatigue severity of a scatter diagram with respect to a certain ship.

• 정신신체의학
• /
• 제9권2호
• /
• pp.164-173
• /
• 2001

연구목적: 피로는 일차 진료에서 흔한 증상이지만 비특이적 주관적 특성상 명확한 정의와 객관적 평가가 어렵고, 특히 기질적 질환이 없는 피로의 평가는 더욱 힘들다. 이에 저자들은 기질적 질환이 없는 피로 환자에게 Fatigue severity scale (FSS) 을 적용하여 그 유용성을 알아보고자 하였다. 방법: 피로환자 44명, 우울 또는 불안증의 정신과 환자 43명과 대조군 45명에게 피로도, 스트레스, 우울 불안 척도를 이용하여 FSS의 신뢰도와 타당도를 조사하였다. 결과: FSS의 신뢰도 계수는 0.935이었고 재검사의 상관관계 계수는 0.916이었다 (p<0.01). FSS 점수는 피로 군에서 유의하게 가장 높았고 대조군에서 가장 낮았다 (p<0.01). FSS와 Chalder fatigue scale의 상관관계 계수는 0.782로 높았다 (p<0.01). 피로군과 대조군에 대한 FSS index의 최적의 절단점은 민감도 84.1%. 특이도 85.7%인 3.22로 조사되었다. 결론: FSS는 일차진료에서 기질적 질환이 없는 피로환자와 우울 또는 불안증 환자에서 피로도를 평가할 수 있는 유용한 도구이며, 향후 보다 많은 환자를 대상으로 한 연구가 필요하리라 생각된다.

• Korean Journal of Acupuncture
• /
• 제29권4호
• /
• pp.623-633
• /
• 2012

Objectives : Fatigue is a common and distressing symptom that is a concern for cancer patients. It has a decisive effect on quality of life. The purpose of this study was to examine the feasibility of clinical trial to evaluate of efficacy and safety of acupuncture on cancer related fatigue of lung cancer patients. Methods : Total lung cancer 9 patients complained of fatigue were treated by acupuncture twice a week for four weeks(8 times in total). Evaluation of the severity of fatigue was measured by FSS(Fatigue Severity Score). In visit 1, 10, we checked FSS. For check safety of acupuncture treatment, we did blood test. Results : After 4 weeks of acupuncture treatment, the FSS was significantly decreased from $4.92{\pm}1.06$ to $3.74{\pm}1.37$(p=0.008). And the level of hemoglobin was significantly increased from 10.87 g/dl to 12.01 g/dl(p=0.014). No other lab measures indicated any significant differences between before and after acupuncture treatment. Conclusions : This study suggests that acupuncture treatment will be beneficial for lung cancer patients to improve the fatigue severity. And acupuncture treatment is safe method for lung cancer patients. A large-scale study to confirm efficacy and safety of acupuncture is needed.

• 기본간호학회지
• /
• 제8권3호
• /
• pp.302-313
• /
• 2001

Purpose: To identify characteristics of chronic fatigue, difference between the duration of fatigue and characteristics of chronic fatigue, and association between chronic fatigue and related factors in adults. Method: The subjects for this study were 180 adults who had experienced fatigue for over one month The measurement tools were the Revised Fatigue Scale by Chalder et al. (1993), the Visual Analogue Scale-energy developed by Lee et al. (1991), the BEPSI (Brief Encounter Psychosocial Instrument) by Frank & Zyzanski (1988), Zung's self rating depression scale (1965) and life style items including exercise sleep, drinking smoking and diet as developed by the researchers. Results : Those who complained of fatigue over six months experienced higher disturbances in their daily life compared to those who had suffered from fatigue less than six months. There were a significant correlation between severity of fatigue and depression (r=.46, p<.001), stress (r=.41, p<.001), and sleep (r=.20, p<.01) Statistically significant relationships were found between severity of fatigue and amount of exercise per week (F=3.79. p<.05) disturbed sleep (t=-2.66, p<.01), number of times awakened during the night (F=3.48, p<.05) types of drinking (F=2.65, p<.05), and diet regularity (F=5.83, p<.01). The construction of a multiple regression model revealed an adjusted $R^2$ of .27 with the depression score serving the major predictor variables for severity of fatigue. Men and people in the younger age group were more energetic than women and those in other age groups. Also married people experienced more fatigue than people who were single. divorced or separated. Conclusion: In nursing interventions for fatigue, medical personnel should consider sociodemographic characteristics of the clients, ways to reduce of stress and counter disturbances in daily life and develop strategies for a health promoting life style.

• 한국자동차공학회논문집
• /
• 제3권6호
• /
• pp.154-161
• /
• 1995

There are several kinds of driving conditions according to the characteristic of each vehicle diver. Automaker produces vehicle strong enough to satisfy this several driving conditions at the point of vehicle durability. In order to develop the car in a short period, Automaker engineer tests vehicle at serveral accelerated durability test roads. Before testing the vehicle durability, test engineer must know how much this test road severe than general field road which is composed of high way, city road, paved road and unpaved road. This paper suggests two types of road severity test method that is using relative fatigue life prediction method and using absolute fatigue life prediction method, and also present the merits and demerits of two test methods.

• 대한약침학회지
• /
• 제14권2호
• /
• pp.25-35
• /
• 2011

Objective : This research was done to identify the effects of dry cupping therapy on the shoulder pain and fatigue of nurses. Methods : The research design was time series design. The participants were 27 nurses with shoulder pain at P University Hospital in Busan metropolitan city from July 6, 2009 to August 3, 2009. The dry cupping therapy was done 4 times, twice a week for 2 weeks. Before intervention, the severity and frequency of pain and fatigue were measured three times at one week intervals, and then those were measured after one week and two weeks of experimental treatment. The results were analyzed using descriptive statistics, paired t-test and repeated measure ANOVA with the SPSS program. Results : There were statistically significant difference in severity and frequency of shoulder pain, and fatigue after dry cupping therapy. Dry cupping therapy was effective for the management of shoulder pain and fatigue among nurses in this study. Conclusion : Therefore dry cupping therapy can be considered an effective nursing intervention that relieves shoulder pain and fatigue of nurses.

• Annals of Occupational and Environmental Medicine
• /
• 제35권
• /
• pp.32.1-32.10
• /
• 2023

Background: Although many studies have been conducted on worker fatigue and sickness absence, the association between fatigue and sickness absence is unclear in Korean workers. This study was conducted to investigate the effect of worker fatigue on future sickness absence. Methods: The study was conducted on workers who received medical check-ups at a university hospital for two consecutive years (2014-2015). During check-ups in the first year, the Fatigue Severity Scale (FSS) was used to assess fatigue levels, and during check-ups in the second year, sickness absence was surveyed to determine whether they had been absent from work due to physical or mental illness during previous 12 months. The χ² test was used to analyze relationships between sociodemographic and occupational characteristics, fatigue levels, and sickness absence. Odds ratios (ORs) were calculated by logistic regression analysis controlled for confounding factors. Results: A total of 12,250 workers were included in the study, and 396 (3.2%) workers experienced more than one day of sickness absence during the study period. Adjusted ORs for sickness absence were 3.35 (95% confidence interval [CI]: 2.64-4.28) in the moderate-fatigue group and 6.87 (95% CI: 4.93-9.57) in the high-fatigue group versus the low-fatigue group. For men in the moderate- and high-fatigue groups, adjusted ORs for sickness absence were 3.40 (95% CI: 2.58-4.48) and 8.94 (95% CI: 6.12-13.07), and for women in the moderate- and high-fatigue groups, adjusted ORs for sickness absence were 2.93 (95% CI: 1.68-5.10) and 3.71 (95% CI: 1.84-7.49), respectively. Conclusions: Worker fatigue is associated with sickness absence during the following 12 months, and this association appears to be stronger for men than women. These results support the notion that sickness absence can be reduced by evaluating and managing work-related fatigue.

• 한국공작기계학회:학술대회논문집
• /
• 한국공작기계학회 2003년도 춘계학술대회 논문집
• /
• pp.130-136
• /
• 2003

A FQI(fatigue quality index) analysis using the concept of SF(severity factor) is performed to various shape of elliptical hole. FQI is fatigue quality index to estimate the dynamic SF from static SF by finite element analysis. Since the SF is affected by the location of cutout in plate and radius ratio, static SF is analyzed with finite element method and forms the equation of FQI for predicting a dynamic SF. To examine the validity, dynamic SF is measured by photoelastics and thermalelastics for an epoxy resin plate with various elliptical holes under dynamic load.

• 자동차안전학회지
• /
• 제14권3호
• /
• pp.30-34
• /
• 2022

The CFT(Cornering Fatigue test) and RFT(Radial Fatigue Test) are tests for evaluating the endurance of the disc and rim region of the wheel. In recent, automobile wheel safety standards have been revised and the applied load and target life criteria are different from existing conditions. The verification evaluation of all wheels requires a lot of time and cost. In this study, the endurance severity of each test was compared through strain-life approach by selecting 4 steel and 8 aluminum wheels.