• Korean Journal of Health Education and Promotion
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• v.20 no.3
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• pp.255-267
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• 2003

The purpose of this study is to analyze the affecting factors on self-efficacy of walking exercise. The subjects were 413 working men. Whose data and material were collected through an organized questionnaire from October, 1999 to May 2000. The major results of this were as follows； 1. 61.1％ of the subjects' major affecting factor was deep sleep, 65.0％ of the subjects' majo affecting facto was regular physical screening, 51.1％ of the subjects' regular exercise, 18.7％ of the subjects' walking exercise. 2. stages of change related to walking exercise of the subjects were as follows, 15.8％ of the subjects were in the precontemplation stage, 51.1％ of the subjects were in the precontemplation stage. 3. The average self-efficacy concerning walking exercise was 3.16 points. 4. With stepwise multiple regression, the most significant factor on self-efficacy related to walking exercise in stages of change was the preparation stage. According to the results of this study, a concrete practice program is needed to promote self-efficacy related walking exercise.

• Journal of the Ergonomics Society of Korea
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• v.15 no.1
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• pp.105-117
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• 1996

This study was initiated to investigate (1) whether consumers preferred a specific garment size labeling system and (2) whether consumer's demographic characteristics, clothing behavior, and body size affect their preference of size labeling systems. The survey of consumer's preferences for five size labeling systems included 443 women with 20 to 64 years of age. The result of the survey showed that the subjects' preferences of five size labeling sysems were different significantly. Subjects strongly preferred the old system rather than the revised systems. The subjects least preferred the system with pictogram(system D) and the system with description of the measuring methods of te control dimensions (system E). The subjects/ preference for various garment size labeling systems was different depending on their resident area, educational level, and body size. The garment size labeling system with more information on body measurements (system C) was preferred by the subjects living in the metro city area or subjects having difficulties on purchasing ready-to-wear garments giving reasonable fit. The simplest size labeling system (system A) was strongly preferred by the subjects of low educational level, or the subjects living in the small city.

• Journal of the Ergonomics Society of Korea
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• v.36 no.5
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• pp.535-543
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• 2017

Objective: This study was designed to identify factors affecting pilots' +Gz tolerance recovery from +Gz induced exhaustion. Background: +Gz tolerance of pilots has been considered as a crucial factor to fly the modern high performance fighter aircrafts. However, the factors affecting pilots' G-tolerance recovery from +Gz induced exhaustion have not been examined in the acceleration research community. Method: A centrifuge profile consisting of a high +Gz run for pilot's exhaustion and a low +Gz run for pilot's recovery and another high +Gz runs for pilot's second exhaustion was designed. The subjects' +Gz tolerance recovery ratio was measured by ratio of second high +Gz run time to the first high +Gz run time. The subjects' +Gz tolerance recovery rate was measured by dividing the subjects' +Gz tolerance recovery ratio by the low +Gz run time. The subjects' G-tolerance recovery rate was analyzed with respect to the subjects' personal factors including subjects' anthropometric and physiologic characteristics, flight time, flying aircraft type and so on. Results: The subjects' previous three-month flight hours (r=-0.336, p=0.039), six-month flight hours (r=-0.403, p=0.012) and one-year flight hours (r=-0.329, p= 0.044) correlated with the subjects' G-tolerance recovery rate. Conclusion: The subjects' G-tolerance recovery rate is clearly related to the subjects' previous flight hours. However, the subjects' anthropometric and physiologic characteristics do not show any statistically significant correlation with the subjects' G-tolerance recovery rate. Application: This research provides a safety critical insight to aviation community by identifying the factors to affect the gravity-induced loss of consciousness (GLOC) of pilots.

• Journal of the Korean Society of School Health
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• v.14 no.2
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• pp.207-213
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• 2001

Objectives: We surveyed the prevalence of smoking among the adolescent population and analysed the correlation of the two exposure biomarkers-concentration of blood cadmium and urinary cotinine-to the smoking status. Methods: Subjects were 193 middle and high school students in Chungnam province. Blood cadmium and urinary cotinine were compared by sex and smoking status. Smoking status were classified by either the concentration of urinary cotinine or subjective answering as a smoker in the questionnaire. Results: Smoking prevalence was 24.6%, 36.2% and 6.7% among all subjects, male and female subjects, respectively. Average smoking amount was 17.5 and 1.5 cigarettes per month among the male subjects and female subjects, respectively. Mean concentration of urinary cotinine among the male subjects was $135.57{\mu}g/{\ell}$, and that of female subjects was $116.59{\mu}g/$. Direct smokers showed higher concentration of urinary cotinine than those of indirect smokers, and subjects with higher urinary concentration showed higher prevalence of smoking, too. Mean concentration of blood cadmium was $0.0572{\mu}g/d{\ell}$ among the male subjects, and $0.0693{\mu}g/d{\ell}$ among the female subjects. Among the male subjects, both exposure biomarkers showed significant correlation to the smoking status, but among the female subjects urinary cotinine did not show significant correlation to the smoking status. Conclusion: Concentrations of these two biomarkers suggested that this population had significantly high evironmental tobacco smoking(ETS) and efficient stop-smoking programs to reduce ETS should be directed to this population.

• Korean Journal of Clinical Pharmacy
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• v.23 no.3
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• pp.197-205
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• 2013

Background: Many factors including drugs, dietary supplements, and food intake can affect the development and organ formation of fetuses. Because of this, subject tends to avoid consuming things like coffee, alcohol, or cigarettes due to the risks they pose during pregnancy. Therefore, analysis of drugs and favorite food consumption is needed and important to ensure safe health management for subject. Purpose: This study was conducted domestically to analyze these factors in South Korea. Method: The survey was conducted from pregnancy-related online communities for six days and the survey results were received via email for analysis. Result: A total of 127 subjects answered the questionnaire via email; the characteristics of subjects are widely varied in their ages, education levels, job statuses, and residences. The questionnaire included the intake of dietary supplements during pregnancy including vitamins and the result showed that the subjects took 2.23 different kinds of supplements on average. In order of highest frequency, 101 subjects took multivitamins; 79 subjects took an iron supplement; 30 subjects took analgesics; 20 subjects took prescribed antipyretic and medication for upper respiratory diseases; 12 subjects took antibiotics; 7 subjects took antiemetics. Their compliances were different in each medication categories. Only 8% of subjects answered that they had asked a pharmacist for medication information during pregnancy. In addition, 78% of subjects answered that they never counseled with anyone about pregnancy related medication use. Conclusion: In conclusion, many subjects took medication including dietary supplements. The role of pharmacists should be actively developed to improve subject care such as education about subject's medication uses and their food consumption behavior.

• Korean Journal of Community Nutrition
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• v.5 no.4
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• pp.683-696
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• 2000

The purpose of this study was to investigate the perception and use of flavor enhancer products. This study was carried out through questionnaire and the subjects were 503 housewives in Inchon. The results are summarized as follows. As for age, 51.9% of the subjects were 40 years or older. Also, 60.0% of the subjects had received a high school education. As for occupation, full-time housewives accounted for 63.7%. Monthly household income of most subjects were 1 million won or more, and monthly food expenses of most subjects were 300 thousand won or more. Also 71.0% of subjects lived in apartments. As for taste of flavor enhancer products, 58.3% of subjects perceived that it was mediocre, 31.3% said good, 6.2% said bad, and 1.8% said very bad. Most subjects perceived that the convenience of flavor enhancer products was good and there was a significant difference among the groups divided by education level. As for economy of flavor enhancer products, there were significant differences among groups divided by household income and food expenses. Most subjects perceived that the safety of flavor enhancer products was not good. Most subjects considered the date of manufacture, manufacturers, food additives, packaging and price when they purchased flavor enhancer products. Also, 70.0% of subjects were going to reduce the amount of flavor enhancer products they use in the future. Most subjects needed flavor enhancer products good for health. Therefore, it may be necessary to develop and to produce safe, nutritious, tasty, cheap and various flavor enhancer products.

• Tuberculosis and Respiratory Diseases
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• v.40 no.2
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• pp.147-152
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• 1993

Background: There is evidence that platelet is activated in chronic obstructive pulmonary disease and activated platelet with injured endothelium contribute to the pathogenesis of pulmonary hypertension, prognostic factor of chronic obstructive pulmonary disease. So, we have investigated platelet function further in chronic obstructive pulmonary disease and effect of platelet activation on pulmonary hypertension. Method: We studied platelet aggregation ratio and alpha-granule products such as platelet factor 4(PF4) and beta-thromboglobulin (${\beta}$-TG) in control subjects and COPD without and with pulmonary hypertension subjects. Result: 1) The platelet aggregation ratio (PAR) was $0.99{\pm}0.04$ in control subjects, $0.98{\pm}0.05$ in COPD without pulmonary hypertension subjects and $0.89{\pm}0.08$ in COPD with pulmonary hypertension subjects. The platelet aggregation ratio of COPD subjects was tend to decrease than that of control subjects and the ratio of COPD with pulmonary hypertension subjects was significantly lower than that of control subjects. 2) The platelet factor 4 (PF4, IU/ml) was $4.7{\pm}1.2$ in control subjects, $18.6{\pm}4.9$ in COPD without pulmonary hypertension subjects and $57.2{\pm}12.7$ in COPD with pulmonary hypertension subjects. The level of COPD subjects was significantly higher than that of control subjects and the level of COPD with pulmonary hypertension subjects was significantly higher than that of COPD without pulmonary hypertension subjects. 3) The beta-thromboglobulin (${\beta}$-TG, IU/ml) was $34.4{\pm}5.8$ in control subjects, $80.4{\pm}18.1$ in COPD without pulmonary hypertension subjects and $93.0{\pm}14.0$ in COPD with pulmonary hypertension subjects. The level of COPD subjects was significantly higher than that of conrtrol subjects and the level of COPD with pulmonary hypertension subjects was tend to increase than that of COPD without pulmonary hypertension subjects. 4) There was no correlation between the clinical parameters and PAR, PF4 and ${\beta}$-TG but there was significant correlation among PAR, PF4 and ${\beta}$-TG. Conclusion: The platelet is activated in chronic obstructive pulmonary disease and the platelet of COPD with pulmonary hypertension is tend to be activated more than that of COPD without pulmonary hypertension. So, activated platelet may involve in the pathogenesis and maintenance of pulmonary hypertension in COPD subjects and modulation of platelet activity that might reduce pulmonary hypertension needs to be determined.

• Journal of Korean Academy of Nursing
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• v.19 no.2
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• pp.160-172
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• 1989

This research was done to clarify the factors related to sexual satifaction in women who have had a hysterectomy, and to idenify which factors had statistically significant influence of sexual satisfaction of the subjacts. The objective of this study was to identify the variables related to sexual adaptation which might be changed by nursing intervention. This was a cross-sectional descriptive correlation study. There were 230 subjects in the study, and they were selected by a convenient sampling method. The tool. for this study was developed by the researcher through modification of the Dergatis Sexual Function Inventory(DSFI). A pilot study was done to determine the necessary modifications. Data collection was done between Sept. 1987 and Du. 1987 using a mailed questionnaire. The characteristics of the subjects were as follows : The mean age of the subjects was 42.3 years and 204(87.4%) of the subjects had nine or more years of education. The mean income of the subjects was 85.8870 won / month, and 179(77%) of them were housewives. The mean number of pregnancies and children were 4.9 and 2.5 respectively. Oophorectomies were included in the surgery for 66(28.7%) of the subjects. Only 12(5.2%) were planning to have more children. Only 88(38.3%) of the subjects had received information prior to the surgery regarding health problems related to the operation and less than half, 111 (48.3%), had received this kind of information before discharge. Lay persons were the source of information about the post-operation status for 196 (85.2%) of the subjects, but the content of the information did not significantly influence the sexual satisfaction score. Only 16(7.0%) of the subjects said they regretted having a hysterctomy while 102(44.3%) said they were pleased to have had a hysterectomy. Ninety (39.1 %) of the subjects reported that their husbands had “stress” and 164(71.3%) of the subjects reported “stress”. The results of this study are summarized as follows : 1. The mean score for sexual satisfaction of the subjects was 34.24 with a possible maximum score of 50.00. Eighty two(35.8%) were responded that they were satisfied with their sexual life but 61 (26.5%) were responded that they were dissatisfied with their sexual life 2. The following 15 factors extracted from the results of the data analysis were significantly related to sexual satisfaction(p＜.05) ; support of husband, body image, emotion, knowledge of sex, menopausal symptoms, sexual behavior, the feelings the subjects had about the hysterectomy, stress for both subject and husband, the number of children, health information given before operation, job, age, level of education and income. The five most important factors influencing sexual satisfaction were identified by using stepwise multiple regression analysis. The most important factor was support of husband, which explained 17.83% of the total variance. The remaining factors in order of significance were : Knowledge of sex, income, job, and emotional status. Those five factors explained 35.16% of the sexual satisfaction. In conclusion, for the care of women who are going to be discharged from hospital after having had a hysterctomy, nurses have to work with the husbands to help them to understand the importance of their support. Nurses also need to make sure that the subjects have an adequeate knowledge of sexual life after a hysterectomy. Also nursing interventions should focus on subjects who do not have a job, who are of low economic status, and the subjects who are under the unpleasant mood.

• Journal of Society of Preventive Korean Medicine
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• v.11 no.2
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• pp.41-70
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• 2007

The purpose of this study was to identify a tendency in patients who seek oriental medical service and factors influencing patient satisfaction. The study was conducted with 1,520 residents of a community during the period from February 5, 2005 through June 30, 2005 using a questionnaire. This study results are summarized as follows : 1. Of subjects who sought oriental medical service, 66.2% had musculoskeletal disorder and connective tissue disease, 18.9% had digestive tract disease, 16.4% had respiratory disease, 8.2% had endocrinemetabolic disease, 7.5% had circulatory disease and the remaining subjects had other diseases(p<0.001). 2. Of subjects who sought oriental medical service for the treatment of musculoskeletal disorder, 84.9% preferred acupuncture. Of those who had digestive tract diseases, 47.0% preferred packaged herbal medicine. Of those who had respiratory disease, 63.0% preferred packaged herbal medicine. 3. Acupuncture was the most often sought by subjects with musculoskeletal disorder. Packaged herbal medicine was sought by subjects with respiratory disease, digestive tract disease, endocrine-metabolic disease or circulatory disease. Tablet-type herbal medicine was sought by subjects with musculoskeletal disorder or digestive tract disease. Combined therapy was sought by subjects with musculoskeletal disorder, digestive tract disease, hematopoietic disease or immune disorder. 4. The level of satisfaction with oriental medical service was higher in subjects with circulatory disease, subjects with digestive tract disease, subjects with neurological disorder and subjects with musculoskeletal disorder in descending order. Of total subjects, 39.4% experienced side effects of oriental medical care, 38.1% experienced side effects of herbal medicine. About 51.9% considered the price of herbal medicine costly while 23.2% considered it reasonable. 5. Subjects' knowledge of herbal medicine was measured as $29.2{\pm}3.83$ out of 42 scores or 69 out of 100 points, indicating a low knowledge level. Subjects' knowledge was influenced by occupation, religion, side effects, sex, age, residence area, the type of insurance. These variables explained 15.2% of the variance. 7. Of total subjects, 56.8% were satisfied with oriental medical service. Patient satisfaction varied with occupation, religion, the type of insurance, health state and treatment outcomes. These variables explained 37.3% of the variance. Conclusion : The majority of subjects were satisfied with oriental medical service. However, oriental medical care are not widely used to treat all kinds of diseases while its use skews to a small categories of diseases. It is therefore necessary for the government and oriental medical service providers to develop new therapy approaches for the treatment of a broader range of diseases.

• The Journal of KAIRB
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• v.5 no.1
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• pp.21-32
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• 2023

Purspose: The purpose of this study is to examine the meaning and definition of vulnerable subjects in clinical trials in light of domestic and international regulations and guidelines, to analyze the contents of standard operation procedures (SOPs) among advanced general hospitals in Korea that conduct clinical trials, and to examine deliberation procedures for operation plans. Methods: The study examined how vulnerable research subjects were defined and described in related regulations and the classification of vulnerable research subjects presented in the IRB/HRPP SOPs of 18 clinical trial institutions, including 11 AAHRPP-accreditated general hospitals in Korea, as well as the operation of the IRB deliberation. Results: Among all domestic and international regulations and guidelines, only the The Council for International Organization of Medical Sciences (CIOMS) guidelines explain why vulnerability is related to judgments on the severity of physical, psychological, and social harm, why individuals are vulnerable, and for what reasons. However, the classification of vulnerable subjects by institutions differed from the classification by the International Conference on Harmonization-Good Clinical Practice (ICH-GCP). A total of the 16 institutions classified children and minors as vulnerable research subjects. 14 institutions classified subjects who cannot consent freely were classified as vulnerable subjects. 15 institutions classified sujects who can be affected by the organizational hierarchy were classified as vulnerable subjects. Subjects in emergency situations were regarded as vulnerable research subjects in 8 of institutions, while people in wards, patients with incurable diseases, and the economically poor including the unemployed were categorized as vulnerable research subjects in 7, 4, and 4 of institutions, respectively. Additionally, some research subjects were not classified as vulnerable by ICH-GCP but were classified as vulnerable by domestic institutions 15 of the institutions classified pregnant women and fetuses as vulnerable, 11 classified the elderly as vulnerable, and 6 classified foreigners as vulnerable. Conclution: The regulations and institutional SOPs classify subjects differently, which may affect subject protection. There is a need to improve IRBs' classifications of vulnerable research subjects. It is also necessary to establish the standards according to the differences in deliberation processes. Further, it is recommended to maintain a consistent review of validity, assessment of risk/benefit, and a review using checklists and spokeperson. The review of IRB is to be carried out in a manner that respects human dignity by taking into account the physical, psychological, and social conditions of the subjects.