Biomedical subjects

Do-Myung Paek

Publications and source records attributed to Do-Myung Paek.

4 recordsLinked to original sources

PubMed2006

[Study on the relationship between childhood obesity and various determinants, including socioeconomic factors, in an urban area].

OBJECTIVES: This study was conducted to investigate the prevalence of childhood obesity, the association between the undesirable lifestyles and socioeconomic factors, the association between childhood obesity and various risk factors, including socioeconomic factors, and the agreement between the body mass index (BMI) classification and the body fat percentage. METHODS: The study subjects were all the 5th grade students from all the elementary schools in Gunpo City, Kyunggi Province, South Korea (4043 children at 22 schools). The subjects were measured for their height, weight and percent body fat etc. and they were also surveyed by questionnaire from March 18th to April 25th, 2005. To determine whether the children were within normal limits or not, standardized BMIs for each age group were used. The data was analyzed by logistic regression analysis using SAS 9.0 version. RESULTS: The prevalence of childhood obesity prevalence was 25.1%. Boys had a higher prevalence of obesity (27.5%) than did the girls (22.5%). Children had tendencies of having undesirable lifestyles and getting obese if they had a lower socioeconomic status. The risk factors for childhood obesity were low paternal education (OR: 1.17, 95% CI: 0.97-1.42) and non-parental caregivers (OR: 1.34, 95% CI: 0.98-1.82). Other risk factors for childhood obesity were a high birth-weight, longer TV/computer-using time, a lower fruit-eating frequency, short sleeping hours and parental obesity. The agreement rate between the BMI classification and the body fat percentage was 93.1%. CONCLUSIONS: This study showed the children had a higher prevalence of obesity: further, not only individual lifestyles, but also socioeconomic factors could influence childhood obesity. Childhood obesity was especially more problematic for children with a low socioeconomic status.

Body Height↗

PubMed2006

[The resting electrocardiographic ST segment depression and related factors at a rural adult community, Korea].

OBJECTIVES: To measure the distribution of electrocardiographic ST segment depression, and evaluate its relationships with cardiovascular risk factors based on the cross-sectional studies within a rural Korean community. METHODS: This study analyzed 1,343 persons, over 40 years old, who participated in a baseline survey during 2002-2005; the exclusion criteria included: a past history of myocardial infarction and angina pectoris, and specific conduction abnormalities. A Standard 12 leads ECG was recorded using an FCP-2101 (Fukuda Denshi Co.). The ST segment depression was retrospectively measured by a physician, according to the Minnesota code classification. RESULTS: ST segment depression was found in 3.6 and 6.4% of male and female participants, respectively. After adjusting for age, gender, smoking, physical activity and obesity differences, high blood pressure showed significant relations with ST depression in females (male ORs=2.67, 95% CI=0.85-8.50; female ORs=2.62, 95% CI=1.29-5.32) CONCLUSIONS: As an ischemic ECG sign, ST depression was related to hypertension in female participants. This relationship remained significant, even after cases with left ventricular hypertrophy were removed.

Adult↗

PubMed2005

The association between blood metal concentrations and heart rate variability: a cross-sectional study.

OBJECTIVES: Analysis of heart rate variability (HRV) is useful for measuring cardiovascular autonomic function. The effects of blood metals on cardiovascular autonomic function have not been studied extensively. The objective of the present study was to determine the association between the concentrations of blood metals, including toxic and essential trace elements, and cardiovascular autonomic function, based on HRV, in subjects without clinical cardiovascular diseases. METHODS: The subjects were public officials and their family members (n = 331) in a district of Seoul, Republic of Korea. Age, height, weight, smoking habits, medical history, blood pressure, electrocardiogram (ECG) recording, and chest X-ray were assessed by means of a self-administered questionnaire and medical examination. Blood metal concentrations (blood Pb, As, and Cd; serum Al, Co, Cu, and Zn) were measured by inductively coupled plasma-mass spectrometry. HRV parameters (low frequency, LF; high frequency, HF; total power spectrum, TPS) were measured with LRR-03 and MemCalc software (GMS, Japan). RESULTS: The concentrations of each of the blood metals were almost within normal ranges. Age and heart rate were negatively associated with LF, HF, and TPS (P< 0.01). Whole-blood Cd concentrations were negatively associated with LF (P< 0.01) and HF (P< 0.05). Serum Zn concentrations were positively associated with LF and TPS (P< 0.01). CONCLUSION: Our study suggests that levels of blood metals even within normal ranges may affect heart rate variability.

Adolescent↗

PubMed2005

[Does non-standard work affect health?].

OBJECTIVES: Job insecurity, such as non-standard work, is reported to have an adverse impact on health, regardless of health behaviors. The aim of this study was to examine the relationship between non-standard employment and health in Korea. METHODS: We analyzed a representative weighted sample, which consisted of 2,112 men and 1,237 women, aged 15-64, from the 1998 Korea National Health and Nutrition Examination Survey. Non-standard employment included part-time permanent, short time temporary and daily workers. Self-reported health was used as a health indicator. RESULTS: This study indicated that women were more likely to report poorer health than men with standard jobs. Of all employees, 20.3% were female manual workers. After adjusting for potential confounders, such as age, education, equivalent income, marital, social and self-reported economic status and health behavior factors, nonstandard employment was found to be significantly associated with poor health among female manual workers (OR, 1.86; 95% CI, 1.24 to 2.79). No significant association was found in other working groups CONCLUSIONS: Among female manual workers, nonstandard employees reported significantly poorer health compared with standard workers. This result raises concern as there are increasing numbers of non-standard workers, particularly females.

Adolescent↗