• 한국산업보건학회지
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• 제29권4호
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• pp.550-561
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• 2019

Objectives: The purpose of this study is to provide basic data for the improvement of the working environment for health prevention and related countermeasures for shift workers. This study was conducted based on the Fifth Korean Working Conditions Survey (KWCS), which analyzed the health effects of shift work forces and compared them with preceding studies. Methods: By analyzing secondary rates using raw data from the 5th KWCS, 4,870 (9.7%) of the 50,184 total study subjects were divided into shift work and 45,314 (90.3%) non-shift work groups based on the response to shift status. Variables that could affect work health issues were identified and corrected. A cross-analysis was conducted to examine demographic characteristics (gender, age, and education level) of the workers and occupation characteristics (monthly net earnings, employment type, occupation, working period up to now, workplace scale, type of work system, and weekly working hours). In order to find the work health issue ratio between the shift and non-shift work groups, logistic regression was analyzed and the association with health problems according to shift type by gender was looked at through cross-analysis. Results: According to the surveys conducted from the 1st KWCS (2006) to the 5th KWCS (2017), the proportion of shift workers continued to increase. Also, muscular pains in the lower limbs (hips, legs, knees, feet, etc.) (OR=1.135, 95%CI 1.031-1.251), headaches, eyestrain (OR=1.580, 95% CI 1.428-1.748), anxiety (OR=1.715, 95% CI 1.402-2.099), difficulty falling asleep (OR=1.391), and other problems (OR=7.392) were reported. In addition, back pain, muscular pains in shoulders, neck and/or upper limbs, muscular pains in lower limbs (hips, legs, knees, feet, etc.), headaches, eyestrain, depression, anxiety, overall fatigue resulted in significant results for both male and female shift workers. Depression and anxiety were higher in female shift/circulation compared to males. Conclusions: The social nets for the health and safety of shift workers should be explored in a variety of ways, including management and supervision of shift sites, attempts to reorganize and improve the shift system, development of workers' health recovery programs, promotion, systematic treatment, and compensation systems.

• Annals of Occupational and Environmental Medicine
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• 제35권
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• pp.14.1-14.10
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• 2023

Background: Shift work is known to cause changes in the circadian rhythm of the human body and adversely affect not only physical health but also mental health. Some studies have demonstrated the correlation between shift work and thyroid stimulating hormone (TSH), a hormone that changes according to the diurnal rhythm, but few studies have reported the different TSH levels according to the shift work type. This study aimed to investigate changes in TSH according to the shift work type. Methods: This study included 1,318 female workers who had a medical checkup at a university hospital in Changwon from 2015 to 2019. Shift work types were classified as non-shift work, regular 2 shifts, and irregular three shifts, and a TSH ≥ 4.2 mIU/L was defined as abnormal. A general linear model (GLM) was used to compare the TSH levels and the risk of subclinical hypothyroidism in each year, and a binary logistic analysis was performed using a generalized estimation equation (GEE) to compare the risk of subclinical hypothyroidism over the 5-year period. Results: Of the 1,318 participants included in this study, 363, 711, and 244 were non-shift, two-shift, and irregular three-shift workers, respectively. In the GEE analysis, after adjusting for age, body mass index, smoking, and alcohol consumption, the odds ratios (ORs) were 1.81 (95% confidence interval [CI]: 1.15-2.86; p = 0.011) in 2 shifts and 2.02 (95% CI: 1.23-3.32; p = 0.006) in irregular three shifts, compared to non-shift. Conclusions: Our results showed that shift work had a higher risk of subclinical hypothyroidism than non-shift work and that there was a significant difference in the risk of subclinical hypothyroidism according to the shift work type. These findings suggest that the shift work type can be considered in future thyroid function tests and evaluations.

• 융합정보논문지
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• 제11권3호
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• pp.46-53
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• 2021

본 연구는 주간근무 및 교대근무 여성 근로자의 일반적 요인 및 여성건강관련 요인들의 차이를 비교하는 것을 목적으로 한다. 보건복지부 질병관리본부에서 실시한 제7기 2차년도 국민건강영양조사 자료를 기초로 하였으며 설문 조사에 참여한 조사자는 모두 10,430명이었다. 그 중 1,995명 근로자의 건강관련 변수와 건강관련 삶의 질 차이를 분석하였다. 여성 근로자의 연령, 결혼여부, 교육수준, 종사상지위, 출산경험은 주간근무 근로자와 교대근무 근로자 간의 유의한 차이를 나타냈다. 반면 소득이나 주관적 건강인식, 스트레스 인지, 우울경험, 초경연령, 폐경연령, 수유기간과 건강관련 삶의 질은 유의한 차이를 나타내지 못하였다. 교대근무는 산업의 발전과 탄력 근로제를 위하여 불가피하게 시행되고 있는 실정이다. 따라서 교대근무로 인한 부작용을 줄이기 위해서는 근로자 개인뿐만 아니라 사회적, 국가적인 관심과 대책이 요구된다.

• 대한지역사회영양학회지
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• 제18권1호
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• pp.55-64
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• 2013

This study was conducted to investigate the effect of nutrition education on improving dietary attitudes, food habits and Food Frequency of 32 female shift workers by administering questionnaires. Dietary nutrient consumption data were obtained from the female shift workers by using 1 day 24-hr recall. The results were as follows: Score on 'Concerns about health (p < 0.05)' was significantly higher after-training. Dietary attitude (32.3 vs. 34.9, p < 0.01) and food habits (60.2 vs. 67.1, p < 0.01) were significantly higher after the training. Scores on 'Eating a lot of food that I want to eat is more important than nutrition (p < 0.01)', 'I have a tendency to use instant foods when I am busy (p < 0.01)', 'I am interested in information on nutrition and health (p < 0.01)' were significantly higher after the training. Scores on 'I have three meals a day (p < 0.001)', 'I have breakfast regularly (p < 0.01)', 'I take vegetables other than kimchi at every meal (p < 0.01)', 'I drink milk every day (p < 0.001)', 'I eat fruits every day (p < 0.01)', and 'I apply nutrition knowledge to daily life (p < 0.001)' were significantly higher after the training. Protein (p < 0.05), fiber (p < 0.05), vitamin C (p < 0.01), and calcium (p < 0.001) intakes were significantly higher after the training. These results showed that nutrition education had improved the dietary attitudes, food habits, and nutrient intakes. Therefore, we conclude that providing more systematic and appropriate nutrition education to shift workers during their tenure of office period is likely to improve dietary attitudes, food habits, and nutrient intakes.

• 한국산업보건학회지
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• 제18권3호
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• pp.216-223
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• 2008

Objectives : To investigate the effect of overtime work on fatigue symptoms among Korean female workers. Methods : A total of 1,875 subjects were analyzed using the structured questionnaire, which was composed of overtime work, fatigue symptom, and background characteristics. Data analysis included multiple regression to test for a relationship of overtime work with fatigue symptom while statistically controlling for demographic and occupational variables. Results : Overtime work was more common in those with shorter work years of 3 or less than in those with longer work years. Overtime work was more popular in day workers than in shift workers. No significant difference of smoking and drinking state was observed between two groups. Subjective fatigue symptoms were significantly higher in overtime workers than in workers without overtime work. In a multiple regression analysis with significant control variables, overtime work was associated with 0.31 more fatigue symptom(p<0.001). Conclusion : Our findings suggest that overtime work may increase risks for fatigue symptom. Therefore, preventive strategies will be needed to control the negative effect of overtime work on health status of female workers.

• 한국직업건강간호학회지
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• 제8권2호
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• pp.156-161
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• 1999

The EMG(Electromyography) analysis was used to identify the fact the degree of inclined step was selected as dependent variable and feet muscle fatigue was selected as a independent variable. In a final result from EMG test. the shift in median frequency (MF) with 20, 25, 30, 35 degree of inclined steps indicated that 30 degree step was identified as most effective for a decrease in feet muscle fatigue. In a department store, 80% of the workers are female standing sales workers. They work at standing on average 10 hours per day. They performed heavy duty jobs such as lifting, lowering. packing and carrying heavy materials. Furthermore, even though they have work shoes, they usually use various kind of high heels. Eventually, this situation develops low-back-pain (LBP) problems for female workers. In conclusion, it is recommended that a particular branch in a department store claimed this step can effectively to circulate blood and significantly decrease feet muscle fatigue in lower extremity.

• 한국직업건강간호학회지
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• 제13권1호
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• pp.59-69
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• 2004

Purpose: The purpose of this study is to investigate cardiovascular risk factors, their interaction, degree of cardiovascular risk and to analyze the effects of related fcators in women workers. Method: A Survey was conducted in 529 employed women in 36 workplaces from October 25, 2002 to December 12, 2002. The survey was distributed and collected by occupational health nurses working at work sites. Result: The result were as followings; The female workers had about 2 cardiovascular risk factors. 82.1% were not exercising more than 3 times a week, 45.9% reported noise-exposure, 38.2% had higher perceived stress, 25.4% were shift-workers, 10.4% were long-time workers(over 60hour/week), 4.4% were frequent drinker, 3.9% were current smokers. The rate of obesity in measured as BMI greater than 25 was 4.0%. Many cardiovascular risk factors were correlated. Job-related and health behavior-related cardiovascular risk factors were correlated statistically. Expose to noise, reported perceived stress were powerful predictors in their degree of cardiovascular risk. Conclusion; Based on the results of this study, cardiovascular prevention programs for women in workplace should be designed as a multifactorial approach, which include stress management and job-related risk factor management as essential components to be effective in addressing the needs of the population.

• 대한간호학회지
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• 제35권8호
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• pp.1500-1507
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• 2005

Purpose. The purpose of this study was to identify subgroups of the physical and behavioral risk profiles for cardiovascular disease among industrial workers, and to examine predicting factors for the subgroups. Sample and Method. Health records of 2,616 male and female workers aged 19-56 years who were employed in an airplane manufacturing industry were analyzed. Data were analyzed using the Latent class cluster analysis. Results. Four different clusters (two high-risk groups, one low-risk group, and one normal group) were found and these clusters were significantly different by age, gender, and work type (p < .05 ). The two high-risk groups had higher chances of drinking alcohol, elevated BMI, FBS, total cholesterol, having hypertension, and were significantly older, and had relatively high chances of being day workers rather than other groups. The low-risk group had higher chances of drinking alcohol, higher BMI and total cholesterols compared to normal group, and highest portions of current smokers and shift workers in the four clusters and their mean BP was within prehypertension criteria. Conclusion. Industrial nurses should guide the lifestyle behaviors and risk factors of the high risk groups for CVD and need to intervene early for behavioral change for the low-risk group who are young and shift workers. Age, and work environment should be considered in planning for targeted preventive interventions for industrial workers.

• 한국직업건강간호학회지
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• 제6권2호
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• pp.79-95
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• 1997

The purposes of this study were to develop a job stress measurement tool and to identify the job stress according to the characteristics of worker and work condition at the small and medium-sized plants. Data were collected through face-to-face survey for April-May, 1997. Subjects were 180 workers at 36 small and medium-sized plants located near Seoul. Data were analyzed by item analysis, factor analysis, and ANOVA. The results were as follow : 1, Number of items of job stress measurement were 33 and Cronbach's $\alpha$ was .9262 except 13 items with low values of Cronbach's coefficient. Factor analysis was done in order for construct validity and 8 factors were extracted and cumulative percent of variance was 65.6%. 2. The job stress scores of male, the younger, 2-shift workers, and over-time workers were significantly higher than those of female, the older, 1-shift workers, and 48 hour workers per week. 3. There were no significant difference between job stress scores and the groups by number of worker, and the types of manufacturing. The stress measurement tool is valid and very reliable to measure worker's stress. Furthermore, the job stress managent program for health promotion of the workers at the vulnerable work condition is needed more and more.

• 대한방사선기술학회지:방사선기술과학
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• 제35권1호
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• pp.9-15
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• 2012

본 연구는 생활주기가 불규칙한 종합병원에 5년 이상 근무한 만 30세 이상의 교대근무여성 총 232명을 연구대상으로 생활습관과 영양섭취상태를 조사하고, 골밀도와의 관련성을 살펴봄으로써 교대근무여성의 골 질환예방을 위한 기초자료를 제공하는데 목적이 있다. 연구의 목적을 이해하고 참여에 허락한 교대근무여성들의 골밀도를 측정하고, 혈액 검사를 통한 생화학적 검사로 혈청 알부민, 총 단백질, 총 콜레스테롤, 헤마토크리트, 헤모글로빈, 칼슘, 인등을 측정하였으며, 그 결과 일반적 특성 및 생활 습관, 총콜레스테롤, 총 단백질, 알부민, 칼슘, 인, 헤모글로빈, 헤마토크리트를 독립변수로, 골밀도를 종속변수로 하여 골밀도에 영향을 미치는 관련 변수들의 설명력을 파악하기 위해 다중회귀분석을 실시하였다. 분석결과 운동, 음주, 칼슘, 인이 유의한 변수로 선정되었으며, 이들의 설명력은 10.2%였다. 즉 운동을 하지 않은 군보다 운동을 한 군일수록, 비음주군보다 음주군일수록, 칼슘이 많은 군일수록, 인이 많은 군일수록 골밀도가 유의하게 높았다. 3교대 조사대상자들의 불규칙한 생활습관으로 인한 골다공증을 예방하기 위해서는 규칙적인 운동이 필요하며 칼슘과 인을 1 : 1 비율로 섭취하는 식이습관이 중요하다고 판단된다.