• Safety and Health at Work
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• 제2권4호
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• pp.336-347
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• 2011

Objectives: In Korea, an average of 258 workers claim compensation for their noise-induced hearing loss (NIHL) on an annual basis. Indeed, hearing disorder ranks first in the number of diagnoses made by occupational medical check-ups. Against this backdrop, this study analyzed the impact of 19 types of noise-generating machines and equipment on the sound pressure levels in workplaces and NIHL occurrence based on a 2009 national survey on work environments. Methods: Through this analysis, a series of statistical models were built to determine posterior probabilities for each worksite with an aim to present risk ratings for noise levels at work. Results: It was found that air compressors and grinding machines came in first and second, respectively in the number of installed noise-generating machines and equipment. However, there was no direct relationship between workplace noise and NIHL among workers since noise-control equipment and protective gear had been in place. By building a logistic regression model and neural network, statistical models were set to identify the influence of the noise-generating machines and equipment on workplace noise levels and NIHL occurrence. Conclusion: This study offered NIHL prevention measures which are fit for the worksites in each risk grade.

• 국제학술발표논문집
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• The 8th International Conference on Construction Engineering and Project Management
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• pp.237-242
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• 2020

Construction noise is among the most critical stressors that adversely affect the quality of life of the people residing near construction sites. Many countries strictly regulate construction noise based on sound pressure levels, as well as timeslots and type of construction equipment. However, individuals react differently to noise, and their tolerance to noise levels varies, which should be considered when regulating construction noise. Although studies have attempted to analyze individuals' stress responses to construction noise, the lack of quantitative methods to measure stress has limited our understanding of individuals' stress responses to noise. Therefore, the authors proposed a quantitative stress measurement framework with a wearable electroencephalogram (EEG) sensor to decipher human brain wave patterns caused by diverse construction stressors (e.g., worksite hazards). This present study extends this framework to investigate the feasibility of using the wearable EEG sensor to measure individuals' emotional stress responses to construction noise in a laboratory setting. EEG data were collected from three subjects exposed to different construction noises (e.g., tonal vs. impulsive noises, different sound pressure levels) recorded at real construction sites. Simultaneously, the subjects' perceived stress levels against these noises were measured. The results indicate that the wearable EEG sensor can help understand diverse individuals' stress responses to nearby construction noises. This research provides a more quantitative means for measuring the impact of the noise generated at a construction site on neighboring communities, which can help frame more reasonable construction noise regulations that consider various types of residents in urban areas.

• Journal of Preventive Medicine and Public Health
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• 제38권1호
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• pp.25-37
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• 2005

Objective : To estimate the magnitude of psychosocial distress and examine eligible factors associated with the development of psychosocial distress in Korean employees, using a nationwide sample. Methods : A total of 6,977 workers were recruited from 245 companies. A structured questionnaire was used to assess sociodemographics, health-related behaviors, job characteristics, social support at work, personality traits (locus of control, type A behavior pattern), self-esteem, and psychosocial distress. Results : The results showed that 23 % of workers were categorized as high stress, 73% as moderate, and 5% as normal. Hierarchical multiple regression analysis showed that psychosocial distress was more common in younger workers, both male and female. Regular exercise was negatively associated with increase of psychosocial distress. In job characteristics, as expected, low decision latitude, high job insecurity, and low social support at work were related to high psychosocial distress. Personality traits such as locus of control and type A behavior pattern, and self-esteem were more powerful predictors of psychosocial distress than general characteristics, health-related behavior, and job characteristics. There were some gender differences. While men who are less educated and single (unmarried, divorced, and separated) experienced higher levels of psychosocial distress than those who are educated and married, women who feel high job demand experienced higher levels of psychosocial distress than those who feel low job demand. Conclusions : The proportion of the high stress group was higher than expected, and psychosocial factors like social support and personality characteristics (e. g. locus of control, type A behavior pattern and self-esteem) were more significant factors for psychosocial distress than other variables. This finding suggests that some psychosocial factors, especially inadequate social support, low self-esteem and lack of internal locus of control for the development of psychosocial distress, will also operate as an intervention strategy in the worksite stress reduction program. It is strongly required that worksite stress reduction programs should be established in at both occupational and level as well as in individual levels.

• Journal of Nutrition and Health
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• 제42권6호
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• pp.559-566
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• 2009

본 연구에서 직장 남성 근로자 739명 (39세 이하 그룹: 240명, 40대 그룹: 276명, 50대 그룹: 223명)을 대상으로 e-mail 영양교육이 신체계측치, 체구성 및 심혈관 질환 위험인자에 미치는 영향을 조사하고자 하였다. 검진 시 1회, 약 10분의 면대면 영양상담 후 15개 주제의 영양교육자료를 월 1회, 10회에 걸쳐 e-mail을 통해 제공하였으며, 그 결과를 요약하면 다음과 같다. 1) 1년간의 e-mail 영양교육 후, 전체 연구대상자의 체지방률 (p < 0.001), 복부지방률 (p < 0.001), 총 콜레스테롤(p < 0.01), 수축기 혈압 (p < 0.01), 이완기 혈압 (p < 0.05)이 유의적으로 감소하였다. 2) 연령 그룹별로 살펴보면, 체지방률과 수축기 혈압은 세군 모두에서 유의적으로 감소하였고, 총 콜레스테롤은 39세 이하 그룹에서만 유의적으로 감소하였다 (p < 0.01). 3) 영양교육 전, 39세 이하 그룹의 대사증후군 유병률은 25%, 40대 그룹은 27.2%, 50대 그룹은 36.3%의 분포를 보였다. E-mail 영양교육 후, 39세 이하 그룹의 대사증후군 유병률은 18.3%, 40대 그룹은 27.5%, 50대 그룹은 35.4%로 교육 전에 비해 영양교육 후 39세 이하 그룹에서의 대사증후군 유병률이 유의적으로 감소하였다 (p < 0.05). 이상과 같이 본 연구에서 e-mail교육 프로그램은 직장인들에게 신체계측치 및 심혈관 질환 위험인자 감소에 효과가 있음이 확인되었다. 따라서 종합검진 후 1년의 자기관리를 위한 e-mail 영양교육 자료를 개발하여 적용했다는데 본 연구의 의의가 있다고 본다. 본 연구의 결과를 토대로 e-mail 교육 프로그램의 효과를 평가하기 위한 확대연구와 효과의 지속기간에 대한 장기적인 추적연구를 통해 직장인의 건강증진 및 사내 복지향상과 의료비 절감을 위해 회사 지원 하에 질환에 따른 적절한 영양관리 프로그램으로 적용 될 수 있기를 기대한다.

• 지역사회간호학회지
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• 제14권2호
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• pp.200-210
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• 2003

Purpose: This quasi-experimental study was performed to investigate the effects of a health promotion program(HPP) on self-efficacy, healthy lifestyle and blood lipid profile in employees with hyperlipidemia. Methods: The subjects were forty-three employees who were diagnosed as having hyperlipidemia during routine health examination at two worksites in Seoul in 2001. Of the forty-three subjects, thirty were allocated to the experimental group and the remaining thirteen were allocated to the control group. Data were collected from September 24, 2001 to March 16, 2002. The HPP was applied to the experimental group for 11 weeks and included health education, diet counseling, watching videos, conference, and so on. The health education included information about exercise, smoking cessation, and abstinence from drinking alcohol and seven sessions of hyperlipidemia education. The experimental group was requested to keep a daily health promotion lifestyle diary. This diary was analyzed by a dietician and subjects were instructed based on the results. As for data analyses, wilcoxon signed rank test and wilcoxon rank sum test and x2-test were carried out using SAS program. Results: 1. Self-efficacy scores of the experimental group were significantly more increased than those of the control group (experimental: 5.86 10.80, control: -4.04 11.91, p=0.018). 2. Healthy lifestyle scores of the experimental group were significantly more increased than those of the control group (experimental: 0.19 0.26, control: -0.05 0.29, p=0.024). 3. Blood total cholesterol values of the experimental group were significantly more decreased than those of the control group (experimental: -13.07 30.10mg/dl, control: 10.00 26.57mg/dl, p=0.033). 4. Blood triglyceride values of the experimental group were significantly more decreased than those of the control group (experimental: -29.17 192.40mg/dl, control: 63.31 107.53mg/dl, p=0.050). Conclusion: These findings indicate that the HHP could be effective in improving self-efficacy, healthy lifestyle and blood HDL cholesterol and decreasing blood total cholesterol in employees with hyperlipidemia. Therefore, the HHP could be suggested as an effective nursing intervention for employees in the worksite by ultimately preventing cerebral and cardiac vessel complications related to hyperlipidemia.

• 한국산업보건학회지
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• 제30권1호
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• pp.1-9
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• 2020

Objectives: The purpose of this case study is to assess workers' exposure to carbon nanotubes(CNTs) and characterize particles aerosolized during the process of producing CNT-enabled polytetrafuoroethylene(PTFE) composites at a worksite in Korea. Methods: Personal breathing zone and area samples were collected for determining respirable concentrations of elemental carbon(EC) using NIOSH(National Institute for Occupational Safety and Health) Method 5040. Personal exposure to nano-sized particles was measured as the number concentration and mean diameter using personal ultrafine particle monitors. The number concentration by particle size was measured using optical particle sizers(OPS) and scanning mobility particle sizers(SMPS). Transmission electron microscopy (TEM) area samples were collected on TEM grids and analyzed to characterize the size, morphology, and chemistry of the particles. Results: Respirable EC concentrations ranged from 0.04 to 0.24 ㎍/㎥, which were below 23% of the exposure limit recommended by NIOSH and lower than background concentrations. Number concentrations by particle size measured using OPS and SMPS were not noticeably elevated during CNT-PTFE composite work. Instant increase of number concentrations of nano-sized particles was observed during manual sanding of CNT-PTFE composites. Both number concentrations and mean diameters did not show a statistically significant difference between workers handing CNT-added and not-added materials. TEM analyses revealed the emission of free-standing CNTs and CNT-PTFE aggregate particles from the powder supply task and composite particles embedded with CNTs from the computer numerical control(CNC) machining task with more than tens of micrometers in diameter. No free-standing CNT particles were observed from the CNC machining task. Conclusions: Significant worker exposure to respirable CNTs was not found, but the aerosolization of CNTs and CNT-embedded composite particles were observed during handing of CNT-PTFE powders and CNC machining of CNT-PTFE composites. Considering the limited knowledge on the toxicity of CNTs and CNT composite particles to date, it seems prudent to take a precautionary approach for the protection of workers' health.

• 보건행정학회지
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• 제9권3호
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• pp.129-148
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• 1999

This study was performed to investigate contents of affairs and job satisfaction of sanitary officials at sanitary department and health center. and to assess attitude about transfer of sanitary affairs control to health center and to devise Improving program of sanitary affairs. Four-hundred and fifty-five sanitary officials were sent a postal questionnaire and eighty-four percent completed and returned the questionnaire (382 persons). The major results are as follows: The major sanitary affairs performed by sanitary officials were permission and filing of restaurant business (15.1%), supervision and regulation of that (14.4%). Sanitary officials answered that supervision and regulation of insanitary and/or subquality foods, planning of food sanitary administration, and permission and filing of restaurant business were their important affairs. They replied that the most serious problem of sanitary affairs was 'lack of contribution to the public health' (40.9%), 'putting first in supervision' (26.4%), and 'lack of personnels' ( 19.1 %), and the most important thing to improve sanitary affairs was the substantial inherent affairs. And they indicated that the agency to be desired for sanitary affairs control was the sanitary department (51.6%), the health center (25.4%), For the degree of satisfaction in affairs, 29.1% of sanitary officials felt proud, 59.6% felt overwork, 59.3% hoped transferring to other worksite and the major reason of transferring was lack of promotion opportunity in officials of sanitary department. disciplinary punishment and social corrupt view in officials at health center. The 41.1 % of sanitary officials at sanitary department didn't know that sanitary affairs had been stated as affairs of the health center in Community Health Act. After transferring affairs control to the health center, 14.4% of them felt more proud of affairs but 20.0% less proud. 23.2% more satisfactory but 22.4% more dissatisfactory. and 64.8% answered that sanitary affairs did not change. The results indicate that sanitary affairs should be changed to supervise and control insanitary and/or subquality foods, so that they play an important role at health promotion, and make sanitary officials feel proud at their own work.

• 아동학회지
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• 제7권2호
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• pp.1-15
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• 1986

한국은 급속도로 산업화해감에 따라서 점점 더 많은 어머니들이 가정 밖에서 일하고 있다. 이러한 경향은 앞으로 계속될 전망이며, 이에 따른 어머니 부재시의 영 유아 양육문제가 크게 대두되고 있다. 이 영(1986 a, 1986 b)의 연구에서 조사된 결과를 토대로 볼 때 자녀를 가진 여성의 취업율은 훨씬 높아질 것으로 전망되며, 이에 따라 자녀 관리문제에 대한 대안이 시급히 요청되고 있다. 그러나 현재 기존 제도하에 있는 시설로써는 취업모의 요구에는 물론 유아를 위한 프로그램의 기본적인 수준에도 미치지 못하고 있다. 따라서, 여성인력의 활용과 변화하는 가족 구조에 맞추기 위한 제도적인 대안 마련이 시급하다. 가정 외의 자녀 양육에 대해서는 다양한 선택의 여지를 둘 것이 권장되고 있으며(Beck, 1982), 국내에서도 대안책이 논의되어 왔는데(한국여성개발원, 1984), 본 논문에서는 특히 직장내 탁아소를 하나의 대안으로 제시했다. 여성 종사자가 많은 직장에서 부터 우선적으로 직장내 혹은 직장 근처에 탁아소를 설치함으로써 여성이 직장에 더욱 충실할 수 있고 능력을 마음껏 발휘할 수 있도록 함과 동시에 건전한 2세 교육에 이바지할 수 있으리라 본다. 특히, 3세 이하의 영 유아를 대상으로 하는 다양한 프로그램 개발이 절대적으로 시급한 현 시점에서 3세이하의 영 유아를 위한 직장내 탁아 프로그램 운영을 위한 대안적 모형을 제시하고자 했다. 대안적 모형 연구에서 취업모의 자녀양육지원제도에 관한 국제적 추세와 외국의 대표적인 모형에 관한 문헌조사를 통해 한국의 실정에 맞는 모형을 제시하였다. 취업모의 자녀양육을 지원하기 위한 시설과 제도에서 가장 중요시되어야 할 개념은 무엇보다도 질적 수준이다. 질적 수준에서는 인적 환경의 측면으로 교사의 자질, 교사(양육자)대 아동의 비율, 아동과 교사간의 상호작용의 질이 고려되었고, 물리적 환경 및 교육프로그램의 철학적 배경 및 건강 위생 측면이 가장 핵심적인 측면이 가장 핵심적인 측면으로서 고려되었다.

• 보건교육건강증진학회지
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• 제21권3호
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• pp.195-211
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• 2004

Stress is a primary health promotion issue in worksite research because psychological distress is closely related not only to workers' health status but also to their job performance. This study identified the significant health behaviors affecting workers' job-related stress in Korean manufacturing industry with the national survey data conducted by the Korean Occupational Safety and Health Agency in 2003. A total of 7,818 factory workers in 1,562 manufacturing companies participated in the Korean nation-wide occupational health survey and 3,390 workers answered that they had any stressors in their workplace among the 7,818 workers finally participated in the analysis. Participants were selected by the stratified proportional sampling process by manufacturing industry classification, company size, and company locations (8 metropolitan and 8 non-metropolitan regions) in Korea. Trained interviewers visited the target companies and interviewed the factory workers randomly selected in each company. Smoking, drinking, weight control, exercise, sleeping, break time at work, and perceived fatigue were included in the health behavior construct. Stress symptoms was consisted of physical and psychological stress with 8 items. All survey responses were anonymously coded into the SPSS statistical program and testified using stepwise multiple regression analysis. Male workers were 73.5% and the 30s were 40.0% among the age groups. The married and the high school graduate were majority with 52.1% and 61.8% each. Current smokers were 44.7% and More than 50% of the participants drank alcohol sometimes. No exercise group was 59.3% and the participants who dissatisfied with their daily sleeping hours were 43.5%. In t-test and analysis of variance, the significant general characteristics associated with physical and psychological job stress were young age (p<0.001), single marital status (p<0.001), and short working period at the present company (p<0.001). The health behaviors related to physical job stress were current smoking, weight change during the past one year (p<0.001), weight control effort (p<0.001), exercise (p<0.001), daily sleeping dissatisfaction (p<0.001), break time, and perceived fatigue (p<0.001). All 10 health behavior factors were significantly associated with psychological job stress (p<0.05). Weight change, weight control effort, exercise, daily sleeping dissatisfaction, little break at work, and high perceived fatigue were significant factors affecting job stress. Daily sleeping dissatisfaction, little break at work, little exercise, weight change for the past one year and young age were selected as the significant health behavior and general factors affecting physical job stress symptoms in stepwise multiple regression analysis. The five factors explained 18.9% of the physical stress score variance. Six factors were selected as the significant health behaviors affecting psychological job stress: daily sleeping dissatisfaction, little exercise, frequent drinking alcohol, high perceived fatigue, little break at work, and little weight control effort. The six factors explained 10.6% of the psychological stress score variance.

• 한국직업건강간호학회지
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• 제7권1호
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• pp.5-19
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• 1998

This descriptive-correlational study was conducted to identify the major factors affecting health promoting behaviors. 344 workers who employed in four different manutacturing plants in Taegu and Kyungbuk area were selected by convenience sampling method. Data were collected from April let to April 18th, 1998 by ready structured questionaires. The purpose of this study was to offer the basic data for health promotion theory development and health promotion strategy planning. This study was based on Pender's Health Promotion Model and examined three variables health promoting behavior, self-concept and perceived importance of health. The Life Style and Health Habit Assessment scale(LHHA) developed by Pender(1982).The Self-concept scale developed by Choi(1972) and the Health Value scale developed by Wallston, Maides and Wallston(1980) were used for this study. Data was analyzed by percentage, mean. t-test. ANOVA, Pearson Correlation Coefficient, and Stepwise Multiple Regression. The major findings of this study are as follows ; 1. The average level of health promoting behavior practice was 63.2% and possible range was from 62 to 248 point. The mean score of respondent's positive self-concept was 75.8. 81.4% of respondents put a high priority on the importance of health. 2. There was a significant difference between the practice level in the category of general self care and less amount of working hours per day(P=0.000), less amount of working hours per week(P=0.000). There was a significant difference between the practice level in the category of nutrition and age(0.002), marital status(0.000), working hour per day(0.008), working hours per week(0.001), There was a significant difference between the practice level in the category of nutriton and sex(0.000), age(0.000), marital status(0.025), education level(0.000), working hours per day(0.002), working hours per week(0.006). There was a significant difference between the practice level in the category of sleep and rest and age(0.003), marital status(0.002), working hours per day(0.001), working hours per week(0.001). There was a significant difference between the practice level in the category of stress management and working hours per day(0.001), working hours per week(0.002). There was a significant difference between the practice level in the category of self-actualization and working hours per day(0.050). 3. General characteristics influencing the respodent's self-concept were level(P=0.009) and worksite(P=0.001). 4. The results of the hypothesis tests are as follows The first hypothesis, that "The respondent who have more positive self-concept will have higher scores in the practice of health promoting behavior." was supported(r=0.2973, P=0.0001). The second hypothesis that "The respondent who have higher perception level on importance of health will have higher scores in the practice health promoting behavior." was rejected(r=- 0665, P=0.2225). 5. The most important factor that affects health promoting behavior practice was working hours per week(6.0%). The combination of working hours per week, age, education level accounted for 10.0% of the variance in health promoting behavior. In conclusion, the results of this study on industrial workers supported Pender's health promotion model in partial and showed the relatedness between self concept and the practice of health promoting behavior. Further research is required to find factors influencing health promoting behaviors of industrial workers.