• Clinical and Experimental Pediatrics
• /
• v.56 no.12
• /
• pp.526-533
• /
• 2013

Purpose: Obesity is an important risk factor for hypertension in adolescents. We investigated the relationship of obesity-related indices (body mass index [BMI], waist-to-height ratio [WHR], and body fat percentage [%BF]) with blood pressure and the hemodynamic determinants of blood pressure in Korean adolescents. Methods: In 2008, 565 adolescents, aged 12-16 years, were examined. The %BF of the participants was measured by bioelectrical impedance analysis. Echocardiography and brachial artery pulse tracing were used to estimate the stroke volume (SV), cardiac output (CO), total vascular resistance (TVR), and total arterial compliance (TAC). Results: We noted that BMI, WHR, and %BF were positively correlated with systolic blood pressure (SBP) and diastolic blood pressure (DBP). The positive correlation between BMI and blood pressure (SBP and DBP) persisted after adjustment for WHR and %BF. However, after adjustment for BMI, the positive associations between blood pressure (SBP and DBP) and WHR as well as %BF, were not noted. With regard to the hemodynamic factors, BMI, but not WHR and %BF, was an independent positive factor correlated with SV and CO. TVR had an independent negative association with BMI; however, it was not associated with WHR or %BF. Moreover, we noted that BMI, WHR, and %BF did not affect TAC. Conclusion: In Korean adolescents, BMI had an independent positive correlation with SBP and DBP, possibly because of its effects on SV, CO, and TVR. WHR and %BF are believed to indirectly affect SBP and DBP through changes in BMI.

• Journal of Korean Public Health Nursing
• /
• v.23 no.2
• /
• pp.306-317
• /
• 2009

Objectives: The purpose of this study was to assess the characteristics of body weight perception and physiological index in young adult women. Methods: Subjects were 283 Korea women. Data was from the 2005 Korean National Health and Survey. Three groups-low normal and overweight-were based on Body mass index(BMI). General characteristics, health status perception, weight control behavior and physiological index such as BMI, total cholesterol, high-density cholesterol (HDL), low-density cholesterol (LDL), triglyceride, systolic and diastolic blood pressure, and waist circumference were compared. Data were analyzed by t-test, $x^2$-test and ANOVA using SPSS program. Results: Of the normal weight group, 28.7% of subjects perceived themselves as overweight. Of the low weight group, 30.3% regarded their weight as normal weight. Of the overweight subjects, weight control was attempted by exercise (50.1%) and food reduction (77.1%). Significant group-related differences were evident in HDL, LDL, triglyceride, systolic blood pressure and waist circumference among three groups. Conclusions: Perception and attitude regarding body weight can be inaccurate. A weight control program should consider the relation of physiological index and weight based on BMI.

• Journal of Community Nutrition
• /
• v.2 no.2
• /
• pp.129-134
• /
• 2000

The purpose of the present study is to evaluate the validity of the BMI as an indicator of obesity for Koreans. The usefulness of the BMI to represent overweight and obesity was evaluated by measuring the relative validity of sensitivity and specificity, and was compared with the validity of triceps skinfold thickness(mm). To measure the relative validity of the BMI and triceps skinfold thickness, body fat(%) was used as a reference measure of obesity. The study population included 844 participants aged 20-69 years who resided in Kuri City in Kyunggi province. Participants were measured regarding weight, height, triceps skinfold thickness and body fat. The prevalence of obesity for male subjects was 32.0%, 66.2%, and 0.9%, and for female subjects, 17.6%, 56.1%, 12.4% based on the BMI, triceps skinfold thickness, and body fat(%) respectively. The prevalence of obesity was higher based on the BMI or triceps skinfold thickness than body fat measurement. The sensitivity and specificity of the BMI were 33.3% and 67.9% in male subjects and 77.7% and 90.8% in female subjects. Sensitivity of the BMI was lower, and specificity was higher than those of triceps skinfold thickness. In summary, BMI as an indicator of obesity for Korean showed a tendency of overestimation of obesity prevalence. Therefore, there is a need to develop a more reliable obesity index other than the BMI for Koreans.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.14 no.3
• /
• pp.1313-1319
• /
• 2013

The purpose of this study was to survey body image according to BMI. The subjects were 600 students, data were collected by questionnaire surveys using convenience sampling and analyzed by the SPSS 20.0 program. Body mass index(BMI) and body image between high school and college students were significantly different. Although significant difference between two groups, BMI of high school and college students among women were not significant difference. BMI and body image according to gender were significantly different. Body image according to BMI between men and women were significantly different and expecially subjects of under weight had highest body image(F =15.86, p <.001). These results mean that body weight misunderstood by the early adulthood. It is needed to revise of perception on their own body weight in order to improve body image.

• Fashion & Textile Research Journal
• /
• v.22 no.6
• /
• pp.812-825
• /
• 2020

This study compared and analyzed the interaction visual effect of skirt silhouettes and skirt length by body mass index. This study provides basic data for women in their 20s and 30s to choose suitable skirts for their image. Twelve skirts were made, consisting of two categories of body mass index, three types of skirt silhouette and two levels of skirt length. Men and women in their 20s and 30s evaluated the visual effects of the experimental skirts using a questionnaire. The interaction effect of the visual effect following the skirt's length and silhouette by body mass index were analyzed by three-way ANOVA. Overall, a shorter the body and lower body length resulted in better vertical effects in normal weight. In terms of horizontal effects, such as lower body thickness and full-body shape, the 40 cm skirt, 50 cm tight, and A-line skirt were generally shown as better images. Skirt length helped supplement body type rather than silhouette in the overweight section. When the length was 40 cm, three skirts showed a more positive image. This study provide results for women in their 20s and 30s to choose skirts that are suitable for their image.

• Asian Pacific Journal of Cancer Prevention
• /
• v.15 no.7
• /
• pp.3075-3079
• /
• 2014

Background: The relationship between body mass index(BMI) and outcomes after chemoradiotherapy(CRT) has not been systematically addressed. The purpose of this study was to evaluate the effect of BMI on survival in patients with esophageal squamous cell carcinoma (ESCC). Materials and Methods: Sixty ESCC cases were retrospectively reviewed in this study. Patient overall survival(OS) and disease-free survival (DFS) were compared between two groups (BMI< $24.00kg/m^2$ and $BMI{\geq}24.00kg/m^2$). Results: There were 41 patients in the low/normal BMI group (BMI< $24.00kg/m^2$) and 19 in the high BMI group ($BMI{\geq}24.00kg/m^2$). No significant differences were observed in patient characteristics between these. We found no difference in 2-year OS and DFS associated with BMI (p=0.763 for OS; p=0.818 for DFS) using the Kaplan-Meier method. Univariate analysis revealed that higher clinical stage was prognostic for worse 2-year OS and DFS, metastasis for 2-year OS, lymph node status for 2-year DFS, while age, gender, smoking, drinking, tumor location and BMI were not prognostic. There were no differences in the 2-year OS (hazard ratio=1.117; p=0.789) and DFS(hazard ratio=1.161; p=0.708) between BMI groups in multivariate analysis, whereas we found statistical differences in the 2-year OS and DFS associated with clinical stage, gender and tumor infiltration (p<0.04), independent of age, smoking, drinking, tumor location, the status of lymph node metastases and BMI. Conclusions: BMI was not associated with survival in patients with ESCC treated with CRT as primary therapy. BMI should not be considered a prognostic factor for patients undergoing CRT for ESCC.

• Journal of Korean Academy of Nursing
• /
• v.27 no.3
• /
• pp.694-704
• /
• 1997

This study was designed to assess the body fat distribution, and also to investigate the effects of body fat on glucose tolerance and on insulin secretion pattern by body mass index in offspring of parents with NIDDM. The subjects consisted of twenty parents with NIDDM who had been admitted to the Department of Internal Medicine or had been seen in the outpatient clinic at Kangnam St. Mary's Hospital, Catholic University between February to March, 1995. Twenty offspring were randomly selected from forty six offspring of twenty parents with NIDDM. As a control group, twenty healthy people without a family history of diabetes mellitus were matched by sex, age and body mass index(BMI). The results are as follows : 1. Mean fasting serum glucose and insulin levels and insulin / glucose ratio were significantly greater in offspring than in the control subjects with BMI 25kg /㎡ in the offspring and in the BMI<25kg /㎡ control subjects (P<0.05). 2. The total glucose area and insulin area were significantly greater in both the offsping and the control subjects with BMI≥25kg /㎡ than in both the offspring and the control subjects with BMI<25 kg /㎡(P<0.05). 3. Upper body skinfold thickness, Waist hip ratio(WHR), serum levels of total cholesterol and triglyceride(TG), total dietary calorie intake and protein intake in both the offspring and the control subjects with BMI≥25kg /㎡ were greater than those with BMI<25kg /㎡(P<0.05). On the other hand, HDL-cholesterol in both the offspring and the control subjects with BMI≥25kg /㎡ was lower than those with BMI< 25kg /㎡(P<0.05). 4. The major variables influencing the total glucose area were subscapular skinfold thickness and WHR and the major variables influencing the total insulin area were suprailiac skinfold thickness, WHR, TG and free fatty acid. In the light of the results, glucose intolerance and insulin resistance were affected by body mass index, Upper body fat, WHR and lipids(TG, Free fatty acid), it is implied that these are influencing factors on total glucose area and total insulin area. The identification of these factors might provide a useful tool to identify individuals at high risk of diabetes mellitus. Therefore, various nursing intervention programs to reduce obesity could be given to both the offspring of parents with NIDDM and to the obese healthy controls before diabetes mellitus develops.

• Safety and Health at Work
• /
• v.5 no.3
• /
• pp.161-164
• /
• 2014

Obesity is a significant problem affecting United States (US) firefighters. While body mass index (BMI) is widely used to diagnose obesity, its use for this occupational group has raised concerns about validity. We examined rates and types of misclassification of BMI-based obesity status compared to body fat percentage (BF%) and waist circumference (WC). Male career firefighters (N = 994) from 20 US departments completed all three body composition assessments. Mean BMI, BF%, and WC were $29kg/m^2$, 23%, and 97 cm, respectively. Approximately 33% and 15% of BF%- and WC-defined obese participants were misclassified as non-obese (false negatives) using BMI, while 8% and 9% of non-obese participants defined by BF% and WC standards were identified as obese (false positives) using BMI. When stratified by race/ethnicity, Pacific Islanders showed high rates of false positive misclassification. Precision in obesity classification would be improved by using WC along with BMI to determine firefighters' weight status.

• Korean Journal of Exercise Nutrition
• /
• v.14 no.2
• /
• pp.81-86
• /
• 2010

The purpose of this study was to identify the factors associated with child's Body Mass Index (BMI) and physical activity. The participants (n = 133) were Korean juveniles (3^rd and 4^th graders) and their parents. They completed a questionnaire packet including the SPARK (Sports, Play, and Active Recreation for Kids) survey and the parent equivalent survey. Correlation, multiple linear regression and binary logistic regression analyses were applied to identify the association between child's BMI and 10 factors of SPARK as predict or variables. 25.6% of the participants were classified as overweight (21.1%) or obesity (4.5%). 3 parental factors including mother's BMI and frequency of mother's and father's physical activity were identified as significant predictors of children's BMI. The 10 variables accounted for 28% of the variance (p<.01) in the linear regression model. These results provide insight into parental factors which are related to a child's BMI and physical activity. Parental role modeling which refers to parents' efforts to model an active lifestyle for children plays an important role.

• Journal of the Korean Society of Radiology
• /
• v.12 no.5
• /
• pp.659-667
• /
• 2018

The purpose of this study was to determine the effect of body mass index (BMI) on entrance surface air kerma (ESAK) in abdominal X-ray radiography using automatic exposure control (AEC). This study included 321 patients who underwent abdominal X-ray using AEC, and we correlated ESAK with height, weight, BMI and compared mean ESAK according to BMI grades (Underweight, Normal, Overweight, Obese 1, Obese 2). As a result, Weight ($R^2=0.777$, p<.001) and BMI ($R^2=0.835$, p<.001) were positively associated with ESAK, but no significant association was found between height ($R^2=0.075$, p<.001) and ESAK. The mean ESAK with respect to BMI grades showed statistically significant difference and in the post-hoc analysis, the existence of 5 subgroups at the significance level of 0.05 indicated that there were differences in the ESAK in all BMI grades. Also, as the increment of ESAK between two neighboring BMI grades increases from Underweight to Obese 2, the exposure dose dramatically increased as the BMI increased. Thus, an excessive exposure dose due to increasing BMI when using AEC should be acknowledged and Efforts to reduce dose should be taken, such as: by fixing the exposure conditions.