Analysis of suicidal ideation and its related factors among migrant construction male workers in Pudong New Area, Shanghai / 上海交通大学学报（医学版）

Objective: To understand the suicidal ideation among migrant construction male workers in Pudong New Area, Shanghai, and analyze the influence factors based on social cognitive theory. Methods: Surveys were carried out among 1 850 migrant construction male workers from 3 randomly chosen construction sites using cluster random sampling. Univariate and multivariate Logistic regressions analysis were used to explore the association between suicidal ideation and its related factors such as negative psychology, negative cognition and high-risk behavior. Results: Among the total 1 580 respondents completed the survey, 126 (8.0%) reported having suicidal ideation. In the univariate Logistic regression analysis, drug abuse, alcohol abuse, depression, generalized anxiety and loneliness were risk factors for suicidal ideation, while perceived social support was a protective factor. Five of the six variables, alcohol abuse (ORm=2.15, 95%CI 1.42-3.24), depression (ORm=2.47, 95%CI 1.17-5.21), generalized anxiety (ORm=2.24, 95%CI 1.50- 3.35), loneliness (ORm=2.09, 95%CI 1.28-3.40) and perceived social support (ORm=1.84, 95%CI 1.20-2.83) were selected by the multivariate Logistic regression analysis. Conclusion: Suicidal ideation among migrant construction male workers in Pudong New Area, Shanghai occurs under the influence of negative psychology, negative cognition and high-risk behavior. For the crowds, family and society should be actively promoted and mental health interventions should be strengthened, which could effectively prevent suicide ideation.

Evaluation of chemical-specific IgG antibodies in male workers from a urethane foam factory

BACKGROUND@#Plastic resins are complex chemicals that contain toluene diisocyanate (TDI) and/or trimellitic anhydride (TMA), which cause occupational allergies (OA), including respiratory allergies. Serum IgGs against TDI and TMA have been suggested as potential markers of the exposure status and as exploring cause of OA. Although TDI-specific IgG has been examined for suspected OA, TMA-specific IgG is not commonly evaluated in a urethane foam factory. This study therefore investigated both TDI- and TMA-specific IgGs in suspected OA patients and to evaluate the usefulness of the measurement of multiple chemical-specific IgG measurement for practical monitoring.@*METHODS@#Blood samples were collected from two male workers who developed respiratory allergies supposedly caused by occupational exposure to TDI and/or TMA for the presence of TDI- and TMA-specific IgGs. In addition, blood samples from 75 male workers from a urethane foam factory, along with 87 male control subjects, were collected in 2014 and tested for the same IgGs in 2014. The presence and levels of TDI- and TMA-specific serum IgGs were measured using dot blot assays.@*RESULTS@#We found that controls had mean concentrations of TDI- and TMA-specific IgGs of 0.98 and 2.10 μg/mL, respectively. In the two workers with respiratory allergies, the TDI-specific IgG concentrations were 15.6 and 9.51 μg/mL, and TMA-specific IgG concentrations were 4.56 and 14.4 μg/mL, which are clearly higher than those in controls. Mean concentrations of TDI- and TMA-specific IgGs in the factory workers were 1.89 and 2.41 μg/mL, respectively, and are significantly higher than those of the controls (P < 0.001 and P < 0.026 for TDI- and TMA-specific IgGs, respectively).@*CONCLUSION@#The workers suspected of OA showed an evidently high level of TDI- and TMA-specific IgG, and these levels in workers at the urethane foam factory were also significantly higher than those in controls. In conclusion, the measurement of TDI- and TMA-specific IgG among workers using plastic resins is helpful to monitor their exposure status.

Analysis of suicidal ideation and its related factors among migrant construction male workers in Pudong New Area, Shanghai / 上海交通大学学报（医学版）

Objective·To understand the suicidal ideation among migrant construction male workers in Pudong New Area,Shanghai,and analyze the influence factors based on social cognitive theory.Methods · Surveys were carried out among 1 850 migrant construction male workers from 3 randomly chosen construction sites using cluster random sampling.Univariate and multivariate Logistic regressions analysis were used to explore the association between suicidal ideation and its related factors such as negative psychology,negative cognition and high-risk behavior.Results· Among the total 1 580 respondents completed the survey,126 (8.0％) reported having suicidal ideation.In the univariate Logistic regression analysis,drug abuse,alcohol abuse,depression,generalized anxiety and loneliness were risk factors for suicidal ideation,while perceived social support was a protective factor.Five of the six variables,alcohol abuse (Orm=2.15,95％CI 1.42-3.24),depression (Orm=2.47,95％CI 1.17-5.21),generalized anxiety (Orm=2.24,95％CI 1.50-3.35),loneliness (Orm=2.09,95％CI 1.28-3.40) and perceived social support (Orm=1.84,95％CI 1.20-2.83) were selected by the multivariate Logistic regression analysis.Conclusion · Suicidal ideation among migrant construction male workers in Pudong New Area,Shanghai occurs under the influence of negative psychology,negative cognition and high-risk behavior.For the crowds,family and society should be actively promoted and mental health interventions should be strengthened,which could effectively prevent suicide ideation.

The Functional Food Usage and Relation with Fatigue for Male Workers / 가정의학회지

BACKGROUND: Fatigue is a common problem in male workers as they have responsibilities in both role in home and in work place. The use of functional food has been one of the popular choices for fatigue recovery. This study was conducted to investigate the prevalence of functional food usage and its relationship with fatigue in male workers. METHODS: The study subjects were male workers seen for health check up at a university hospital in Busan from May to July 2009. They completed a questionnaire including social factor, occupational factor, life style, functional food usage and disease status. The subjects were divided into groups according to fatigue severity. RESULTS: Among 770 subjects, 267 (34.7%) consumed functional food daily. Most of them used functional food to recover fatigue as a supplement nutrition by their wife's or surrounding person's recommendation. There were significant difference between fatigue and non-fatigue group in age, occupation satisfaction, alcohol drinking, and insomnia. The prevalence of fatigue was 37.8%. The functional food usage significantly increased with fatigue severity scale (P < 0.001). CONCLUSION: Fatigue is common problem in male workers. The functional food usage is relation with fatigue severity.

The Effects of a Worksite On-line Health Education Program on Metabolic Syndrome Risk Factors and Nutrient Intakes of Male Workers

Worksite health promotion programs have been associated with reductions in health risks but are labor-intensive and costly to implement. Therefore, innovative strategies to provide a cost-effective approach to health education program are needed. The purpose of this study was to investigate the effects of a worksite on-line health education program by e-mail on metabolic syndrome risk factors and dietary intakes in male workers with metabolic syndrome. Anthropometric and biochemical parameters were measured and the nutrient intakes were assessed through FFQ. The diagnosis of metabolic syndrome was adapted from NCEP-ATP III with blood pressure, fasting blood glucose, triglyceride, HDL cholesterol, and Asia-Pacific definition with waist circumference. The education group consisted of 212 male workers and the non-education group of 236 age-matched male workers. The on-line health education program provided 10 sessions by e-mail. After a worksite on-line health education program, systolic blood pressure (p < 0.001), diastolic blood pressure (p < 0.001) and fasting blood glucose (p < 0.001) were significantly decreased and HDL cholesterol (p < 0.001) was significantly increased in the education group. Intakes of total energy (p < 0.05), carbohydrate (p < 0.05), sodium (p < 0.05) were significantly decreased in the education group, but there were no significant differences in dietary intakes in the non-education group after a worksite on-line health education program. The results indicate that online health education program by e-mail is effective for improving metabolic syndrome risk factors and dietary intakes in male workers and show potential for use in the working setting.

Influence of Epinephrine and Norepinephrine on the Risk of Metabolic Syndrome Occurrence in Workers Exposed to Hazardous Chemicals / 산업간호학회지

PURPOSE: The aim of the present study was to clarify effects of long term, low-level monocyclic aromatic hydrocarbons exposure (MAHs) such as styrene, toluene and xylene on physiological levels of epinephrine (EP) and norepinephrine (NEP) and these hormones influences diagnosis indices of metabolic syndrome (MetS). METHODS: Blood pressure and serum biochemical parameters were measured using digital sphygmomanometer and autochemical analyzer. EP and NEP were analyzed by using ELISA kit and exposure level of MAHs was measured by NIOSH method. RESULTS: The differences of general characteristics such as age, smoking and drinking habits in both groups were not significantly different except working hours per day. In exposed workers, exposure levels of MAHs showed very low concentrations. Serum HDL-cholesterol concentration was significantly higher in exposed group, but concentration of NEP was significantly higher in control group. On multiple logistic regression analysis for the diagnosis indices of MetS, EP was WC (OR=0.970), NEP was blood pressure (OR=1.002) and MAHs exposure were significantly associated with HDL-cholesterol (OR=0.257), fasting glucose (OR=3.028) and MetS (OR=0.372). CONCLUSION: These findings suggest that the chronic exposure of low level MAHs maycontribute to glucose metabolism and induction of MetS. And also, changes of EP and NEP levels by exposure of MAHs affect blood pressure.

The Effect of Repeated Nutrition Education on Health Improvement Program by Diet Quality Index-International (DQI-I) Evaluation in Office Workers / 대한지역사회영양학회지

The purpose of this study was to investigate the effect of 3-month nutrition education (First Time Intervention, FI) + additional 3-month nutrition education (Repeated Intervention, RI) which was performed after the 8-month follow-up. FI was conducted during 0-3 months and RI for 11-14 months. Ninety-two subjects completed FI program, and 38 out of 92 subjects who received FI finished the RI. Anthropometric data, dietary assessment (24hr recall) and fasting blood analysis were measured at 0 month, 3 months, 11 months and 14 months time points. After FI (3 mo), waist circumference, triglycerides, total cholesterol were significantly decreased. At 11 month follow-up, body weight, BMI, hip circumference, SBP, DBP were significantly rebounced and HDL cholesterol was significantly decreased. Therefore, the effect of short-term nutrition education was not being sustained. After the secondary nutrition intervention (14 mo), waist circumference and hip circumference were again significantly decreased. Total diet quality index-international (DQI-I) score was significantly increased in both FI group and RI group. The changes in DQI-I scores were significantly correlated with the changes in body weight (r = -0.129, p < 0.05) and counts of nutrition education (r = 0.159, p < 0.05), indicating that effective nutrition education helps improve the diet quality leading to a possible role in CVD prevention among male workers. Although a short-term intervention seems to be a success, the effect was not retained in this study. Therefore, we suggest incorporating nutrition education as a routine program for male worker at worksite.

Effect of 1 Year E-mail Nutrition Education after Face-to-Face Encounter at Worksite: Changes in Cardiovascular Risk Factors

Effective nutrition educations for prevention of chronic diseases for the general population are of great importance these days. The purpose of this study was to evaluate the feasibility of nutrition education for cardiovascular risk factor reduction by e-mail education in male workers. The participants were divided into three groups by age; 28-39 age group, 40-49 age group, and 50-59 age group who got regular checkups for anthropometry and biochemistry. The 1 year program consisted of 15 topics containing information about metabolic syndrome (MS) and healthy eating behavior (intake of salt, fat and alcohol). Seven hundred thirty nine participants volunteered for the study [28-39 age group, n = 240; body mass index (BMI) = 24.9 +/- 2.7 kg/m2: 40' group, n = 276; BMI = 24.8 +/- 2.6 kg/m2: 50' group, n = 223; BMI = 24.9 +/- 2.7 kg/m2]. Percentage body fat (p<0.05) and percentage of abdominal fat (p<0.05), total cholesterol (p<0.05), systolic blood pressure (p<0.05), and diastolic blood pressure (p<0.05) were significantly decreased in all participants after the 1 year program. The total number of participants who had MS was decreased from 216 to 199 and especially the incidence of MS was decreased 27% in the group of subjects who were under the age 39. The e-mail worksite nutrition education program shows a substantial contribution to the development of effective CVD and chronic disease control and lifestyle nutrition educations that are applicable to and attractive for the large population at risk.

Effects of Obesity on the Physiological Levels of Adiponectin, Leptin and Diagnostic Indices of Metabolic Syndrome in Male Workers / 산업간호학회지

PURPOSE: The aim of this study was to examine the effects of obesity on the physiological levels of adiponectin, leptin and components of metabolic syndrome (MS) in male workers, aged 30-40 years. METHODS: Body mass index (BMI) was measured with Anthropometric equipment. Blood pressure and serum parameters were measured with an automatic digital sphygmomanometer and autochemical analyzer, respectively. Adiponectin and leptin were analysed by ELISA kits and MS was defined based on the NCEP-ATP III. RESULTS: Body fat mass of waist and hip, systolic and diastolic blood pressure were significantly higher, as expected, in the BMI> 25kg/m2 in comparison with the BMI25kg/m2 were also significantly higher compared with BMI< or =25kg/m2, HDL- cholesterol and adiponectin were significantly higher in BMI< or =25kg/m2. On multiple logistic regression analysis for the components of MS, exercise, adiponectin and leptin were an only independent factor for MS in non-obese male workers(BMI< or =25kg/m2) after adjustment for age, cigarette smoking and drinking habits. CONCLUSION: These results suggested that the obesity in men was associated with physiological levels of adiponectin and leptin contributing to feedback control of MS and that dysfunction and/or declination in feedback control system associated with changes in physiological levels of neurptrophics: adiponectin and leptin might ultimately induce MS.

Effects of Obesity on the Physiological Levels of Adiponectin, Leptin and Diagnostic Indices of Metabolic Syndrome in Male Workers / 산업간호학회지

PURPOSE: The aim of this study was to examine the effects of obesity on the physiological levels of adiponectin, leptin and components of metabolic syndrome (MS) in male workers, aged 30-40 years. METHODS: Body mass index (BMI) was measured with Anthropometric equipment. Blood pressure and serum parameters were measured with an automatic digital sphygmomanometer and autochemical analyzer, respectively. Adiponectin and leptin were analysed by ELISA kits and MS was defined based on the NCEP-ATP III. RESULTS: Body fat mass of waist and hip, systolic and diastolic blood pressure were significantly higher, as expected, in the BMI> 25kg/m2 in comparison with the BMI25kg/m2 were also significantly higher compared with BMI< or =25kg/m2, HDL- cholesterol and adiponectin were significantly higher in BMI< or =25kg/m2. On multiple logistic regression analysis for the components of MS, exercise, adiponectin and leptin were an only independent factor for MS in non-obese male workers(BMI< or =25kg/m2) after adjustment for age, cigarette smoking and drinking habits. CONCLUSION: These results suggested that the obesity in men was associated with physiological levels of adiponectin and leptin contributing to feedback control of MS and that dysfunction and/or declination in feedback control system associated with changes in physiological levels of neurptrophics: adiponectin and leptin might ultimately induce MS.

The Effect of Nutrition Education on Weight Control in Male Workers by the Community Health Center

The principal objective of this study was to determine the importance of obesity management nutrition programs for obese male workers after performing a 10-week nutrition program and to compare changes in the obesity index, health behavior, meal intake, and blood constituents. The study subjects included 44 individuals, all without chronic disease. After the program, the weight, body mass index (BMI), body fat percentage, and waist-hip ratio (WHR) of the subjects dropped. Dietary life behavior scores increased. In particular, more than 30% increases were detected in self-control of surfeit, control of eating speed, temperance, and regular exercise items. Total caloric intake and average drinking intake dropped. Though insignificant, systolic pressure, total cholesterol, LDL-cholesterol, and sGPT all dropped as compared to the levels measured prior to the program. Fasting blood sucrose, triglyceride, g-GTP, and atherogenic index dropped significantly. HDL-cholesterol, though insignificant, increased. As the result of examining correlations between the subjects' health life behavior, caloric intake, and improvement in obesity, we noted a significant correlation between self-control of surfeit and temperance in the health life behavior item, along with significant correlations among total calorie intake, surfeit percentage, and daily average drinking intake. These results demonstrated that nutrition program for obese workers performed at the Community Health Center had the effect of reducing obesity, improving health behavior, and improving clinical levels. Thus, it is advisable that obesity management programs be achieved, linking the center of local societies' health promotion projects, community health centers, and workplaces, and various programs should be developed to maintain and continue changes in workers' behaviors, such that the positive effects of improvement in obesity could be maintained, even after the program.

Effects of Worksite Nutrition Counseling for Health Promotion; Twelve-Weeks of Nutrition Counseling Has Positive Effect on Metabolic Syndrome Risk Factors in Male Workers / 대한지역사회영양학회지

The purpose of this study was to investigate the effect of nutrition counseling on improving metabolic syndrome (MS) risk factors. Sixty-eight subjects were grouped according to their numbers of MS risk factors. Subjects who have three or more risk factors of MS were defined as "High risk", subjects who have two risk factors of MS were defined as "low risk", and subjects who have below two risk factors of MS were defined as "no risk" group. All groups finished nutrition counseling every three weeks for 12 weeks. Anthropometric, dietary assessments (24 hr-recall) and blood samples were measured at 0 and 12 weeks nutrition counseling. After 12 weeks of intervention, anthropometric data (weight, BMI, body fat (%), and waist/hip ratio) were significantly decreased (p < 0.05) in all groups. Daily consumption of calorie was decreased significantly (p < 0.05) in the group of low risk and high risk. Blood level of fasting plasma glucose was significantly decreased (p < 0.001) in all groups after 12 weeks of intervention. Significantly, the fasting plasma glucose level was returned to normal range in the high risk group. The number of people who have three or more risk factors of MS (high risk group) was decreased from 25 to 12. Sum of MS Criteria decreased from 85 to 52 in the group of MS and decreased from 143 to 99 in all groups. These results indicate that nutrition counseling for male workers at the worksite proved to be helpful by reducing the risk factors of MS and thereby reducing the risk of cardiovascular disease. Continuing and systematic nutritional management programs should be developed and implemented for male workers at the worksites.

An Investigation of the Intake of the Health Improving Agents and Health Status by Male Workers in Chonnam Yeosu Industrial Area / 대한지역사회영양학회지

This study was carried out to examine information regarding usage of health improving agents and health status of male workers in the Chonnam Yeosu industrial area. We obtained data by means of a questionnaire from 329 men. Of the subjects 44.7% were in their forties, high school education was 43.0%, married was 83.0% and 1,500~3,000 thousand won in monthly income was 35.8%. Average height and weight of the subjects was 171.8 +/-5.4 cm and 70.5 +/-8.1 kg. Average BMI was 23.8 +/-2.2. Drinking rate of respondents was 85.5%, the drinking rate of daily workers was significantly higher than rotation workers (p < 0.05). Rotation workers exercised more regularly than daily workers (p < 0.001). Subjective symptoms of the subjects always had eye problems (11.7%), shoulder aches (5.8%), ache in one's empty stomach (4.7%) in decreasing order. 21.4% of the subjects had a disease, and liver disease was the highest in the subjects; the second was cardio-vascular disease. Interval of health food intake was highly irregular (62.7% of respondents), and keeping healthy was the main motivation for the usage of health foods. Health improving agents included oriental medicine, animal protein based restorative foods, nutrition supplements, health supplements, and natural foods. 33.3% of the subjects took health supplements, nutrition supplements (29.1%), oriental medicine (20.6%), natural foods (16.7%) and animal protein based restorative foods (3.9%), in respective order. Health improving agents were consumed higher in liver disease than other diseases. This study suggests that nutritional education and monitoring should be implemented for industrial workers to prevent life-habit diseases and to keep proper self-management of health status under special environments.

Increasing obesity among male workers in Japan: 1992-1997

<p><b>OBJECTIVE</b>To examine changes in the Body Mass Index (BMI) and in the prevalence of obesity among male Japanese workers after five years.</p><p><b>DESIGN</b>Follow-up study, based on data from annual health checkups performed at workplaces.</p><p><b>SUBJECTS AND METHODS</b>We had access to the data for a total of 63,951 male workers aged 20 through 54 years in 1992 who were examined in both 1992 and 1997. In quinquennial cohorts, we compared the findings for mean BMI and the prevalence of obesity in 1992 with the findings in 1997.</p><p><b>RESULTS</b>Between 1992 and 1997, in all cohorts the mean BMI increased significantly. For each adjacent cohort pair the mean BMI value in 1997 was significantly higher than in 1992. In 1992, 21.3% of all subjects were obese, increasing by 3.4% after five years to 24.7% in 1997. In the younger 1968-1972 and 1963-1967 cohorts the prevalence of obesity increased by 6.3% during five years. The significant increase in the obesity prevalence was observed from 1992 to 1997 for each age-adjusted cohort.</p><p><b>CONCLUSIONS</b>These results suggest a substantial increase in obesity among male Japanese workers. The notable increase in the prevalence of obesity among young male adults and the general trend toward widespread obesity during five years signal an increasing risk of lifestyle-related diseases.</p>

Increasing Obesity among Male Workers in Japan: 1992-1997

Objective: To examine changes in the Body Mass Index (BMI) and in the prevalence of obesity among male Japanese workers after five years. Design: Follow-up study, based on data from annual health checkups performed at workplaces. Subjects and Methods: We had access to the data for a total of 63,951 male workers aged 20 through 54 years in 1992 who were examined in both 1992 and 1997. In quinquennial cohorts, we compared the findings for mean BMI and the prevalence of obesity in 1992 with the findings in 1997. Results: Between 1992 and 1997, in all cohorts the mean BMI increased significantly. For each adjacent cohort pair the mean BMI value in 1997 was significantly higher than in 1992. In 1992, 21.3% of all subjects were obese, increasing by 3.4% after five years to 24.7% in 1997. In the younger 1968—1972 and 1963—1967 cohorts the prevalence of obesity increased by 6.3% during five years. The significant increase in the obesity prevalence was observed from 1992 to 1997 for each age-adjusted cohort. Conclusions: These results suggest a substantial increase in obesity among male Japanese workers. The notable increase in the prevalence of obesity among young male adults and the general trend toward widespread obesity during five years signal an increasing risk of lifestyle-related diseases.

Determinants on Occurrence of Hypertension in the Korean Adult Male Workers in an Industry: a Nested Case-control Study / 대한산업의학회지

OBJECTIVES: In order to find determinants on occurrence of hypertension in the adult male workers in an industry, a nested case-control study was performed in Seoul, Korea at the periodic health examination center. METHODS: A cohort was formed with 1,690 normotensive male workers in 1996 and 1997, who had participated in three consecutive periodic health examinations from 1996 through 1998. Cases were 89 hypertensives in 1998, controls were 356 selected by 1:4 age-matching among 1,601 normotensives in 1998. Baseline health behavior (drinking smoking, exercise), baseline health examination data (height, weight, BMI, blood pressure. hemoglobin, fasting blood sugar, serum total cholesterol), and the changes of data during the study period were compared between case and controls. And multiple logistic regression was performed to find determinants on occurrence of hypertension. RESULTS: There was significant difference in alcohol consumption amount, baseline weight, DM1, blood pressure, total cholesterol, and hemoglobin level. The main determinants on occurrence of hypertension from multiple logistic regression analysis were baseline systolic blood pressure (OR, 1. 13; 95% confidence interval 1.08-1.18%), 15-21 drinks per week (OR, 4.17; 95 % confidence interval 1.44-12.11), and 22 or more drinks per week (OR, 5.29; 95 % confidence interval 1.50-18.58). CONCLUSIONS: This study showed the importance of baseline blood pressure level and adequate drinking habit for the management of hypertension.

A Survey on Health Behavior of Male Workers in Steel Industry / 예방의학회지

This study was carried out to evaluate the relations among workers' general characteristics, work-related behaviors and health related behaviors in a steel industry with 1,134 workers in Pohang. The results were as follows; 1. The mean age of workers was 50 years old and working duration was 15 years and over. Most of them were married(94 5%) and had studied beyond high school (53.0%). They performed three shift work and most of them(63.0%) had experienced industrial accidents. The frequency of noise and dust exposure was defined by a minimum of 6 hours per day, and workers complained about noise exposure(62.9%) and dust(55.6%). There were current smokers(67.7%), current drinkers(74.3%) and current exercising workers(32.3%) in the industry. The number of cigarette consumption in current drinkers was significantly high (13.6 +/- 8.4 pieces/day) and the alcohol consumption in current smokers was significantly high(l04.5 +/- 113.5 g/wk). And the number of cigarette consumption of exercisers was significantly low and the alcohol consumption of exercisers was higher than non-exercisers. 3. The ratio of current smokers on frequent noise in exposed workers versus non-exposed workers was not significantly high but the current drinkers in frequent noise and dust exposed workers was significantly higher than non--exposed. 4. The normal levels of SGOT workers in non-smokers were significantly higher than in current smokers, and the abnormal levels of LFT(SGOT, SGPT, gamma-GTP workers in nondrinkers were significantly high. The normal levels of SBP and DBP workers in current smokers were not significantly high but were significantly high in non-drinkers. 5. The ratio of current smokers in workers unsatisfied with their job and working condition was higher than non-smokers, but the ratio of current drinkers in workers satisfied with their job and working condition were higher. 6. The significant factors for SGOT and gamma-GTP were age, the drinking amount and BMI. But the only significant factor for r-GTP was BMI. The significant factors for DBP were age, the alcohol consumption and BMI And the significant factors for SBP were age, BMI.

The Relationship between Change in Obesity Indices and Change in Serum Lipids in Adult Male Workers / 예방의학회지

This study was conducted to evaluate the relationship between change in obesity indices and change in serum lipids in adult male workers. Two-hundred-eight adult male workers of an industry in Taegu city were followed-up from 1991 to 1995. Height, weight, circumferences of hip and waist, blood pressure were measured and serum lipids were analysed. Data on life style were obtained using self-administered questionnaires. Mean differences of anthropometric measurements between 1991 and 1995 were as follows; 1.63kg in weight, 3.61cm in waist circumferences, 4.23cm in hip circumferences, 0.52kg/m2 in BMI and -0.021 in WHR. Those of lipids were as follows; 15.09mg/dl in total cholesterol, 20.43mg/dl in triglyceride, 9.40mg/dl in HDL-cholesterol, 2.87 in MI-index(p<0.01) and 350mg/dl in LDL-cholesterol. The changed value of BMI and Katsura index were strongly correlated with that of total cholesterol(r=0.174, p<0.05), the changed value of BMI correlated with that of triglyceride(r=0.374, p<0.01) and the changed value of weight correlated with that of MI index(r=-0.173, p<0.05). The changed value of WHR was significantly correlated with that of total cholesterol(r=0.162, p<0.05), however, was not significantly correlated with HDL-cholesterol, LDL-cholesterol, triglyceride and MI index. The changed value of weight, BMI and Katsura index were correlated with that of triglyceride(r=0.262, p<0.01; r=0.267, p<0.01; r=0.258, p<0.01) and the changed value of MI index(r=-0.143, p<0.05; r=-0.158; r=-0.144, p<0.01), adjusting the pattern of change in life style. The changed values of HDL-cholesterol and MI index between 1991 and 1995 in low WHR group were significantly higher than those in high WHR group(p<0.05, p<0.01), adjusting the baseline value of them. Similar pattern was observed when considering Katsura index. When stratifying by BMI value of 1991, in low BMI group, the changed value of HDL-cholesterol and MI index showed the same pattern as above, however the of triglyceride was statistically higher in obese group than in non obese group(p<0.05). In conclusion BMI might be a better indicator to predict serum lipids change than other obesity indices.

Normal Predictive Values of FVC and FEV1 for Healthy Korean Male Workers / 대한산업의학회지

Lung Function test results can be influenced by race, socioeconomic status, and physical fitness. The choice of the most appropriate predictive equations should be based upon these considerations as well as age, sex, and body size. About 70% of Korean males smoke, and non-smokers can be a selective group in Korea. In this study, lung function test results of 683 healthy Korean male workers were analyzed to get the predictive equations of Forced Vital Capacity(FVC), Forced Expiratory Volume in 1 second(FEV(1)), and FEV(1)/FVC (FEV(1)%). The age of studied workers ranged from 18to 60, and most of those finished high school or less. Healthy smokers without any respiratory symptoms or disease history were included in the study, while the effect of smoking on the test results were examined in the analysis. FVC, FEV(1), and FEV(1)% were regressed against age, height, weight and smoking status or smoking amount. Age and height explained FVC and FVC(1) most efficiently and the contribution of other variables were not significant. Whereas, smoking was significantly associated with a decrease in FEV(1)% even among healthy un-symptomatic workers. For FEV(1)%, age, height, and smoking amount were significant variables, constituting the most efficient prediction model. The lower limit of normal for percent predicted values was calculated from lower 95 percentile as well as 95% confidence interval. When the results of this study was compared to those from studies of white Caucasians, the predicted FVC and FEV(1) were lower for the given age and height but the differences were less than 10%. The slopes of regression equation for height and age were, however, not significantly different when the social backgrounds of the studied subjects were similar.