Impedance Fat Meter로 측정한 체지방 비율과 혈청 지질치 및 혈압과의 관련성

이석환,황태윤,김창윤,Lee, Seock-Whan,Hwang, Tae-Yoon,Kim, Chang-Yoon 대한예방의학회 1995 예방의학회지 Vol.28 No.4

영남대학교 의과대학 부속병원 종합건강진단센터에서 1994년 5월 20일부터 9월 30일까지 종합건강진단을 받은 성인 661명(남 472명, 여 189명)을 대상으로 이들의 신장, 체중, 혈청지질치(총 콜레스테롤, 중성지방, 고밀도 지단백), 혈압과 impedance를 측정하였고, 이들 측정치를 이용하여 체질량지수, Katsura 지수, 동맥경화지수, 저밀도 지단백, 체지방 비율을 산출하여 체지방 비율과 혈청 지질치 및 혈압과의 관련성을 규명하였다. 체지방 비율에 따른 분포는 남자의 경우 체지방 비율이 20% 이상인 제1군이 15명(3.2%), 여자의 경우 25% 이상인 제 1군이 7명 (3.7%)으로 나타났다. 체중은 남자와 여자에서 체지방 비율에 따라 유의한 차이가 있었으나(p<0.01)신장은 세 군간에 유의한 차이가 없었다. 남자에서는 총 콜레스테롤치, 중성지방치, 고밀도 지단백, 저밀도 저단백, 동맥경화지수가 세군간에 유의한 차이가 있었고(p<0.01) 여자에서는 총 콜레스테롤과 저밀도 지단백은 세 군간에 유의한 차이가 있었으나(p<0.05) 중성지방치, 고밀도 지단백은 세 군간에 차이가 없었다. 체질량지수와 Katsura 지수는 남녀 모두에서 세 군간에 유의한 차이가 있는 것으로 나타났다(p<0.01). 상관관계분석에서는 체지방 비율이 남자에서는 체중, 체질량지수, Katsura 지수, 총 콜레스테롤, 중성지방, 저밀도 지단백, 동맥경화지수, 수축기 및 확장기 혈압과 유의한 상관관계가 있었고 고밀도 지단백과는 유의한 역상관관계가 있었다. 여자에서는 체지방 비율이 나이, 신장, 체중, 체질량지수, Katsura 지수, 총 콜레스테롤, 중성지방, 저밀도 지단백, 동맥경화지수와 유의한 상관관계가 있었고 고밀도 지단백과는 유의한 역상관관계가 있었으나 혈압과는 유의한 상관관계가 없었다. 심혈관계질환의 위험인자인 총 콜레스테롤과 LDL/HDL비를 종속변수로 하고 나이, 체질량지수, 체지방 비율을 독립변수로 한 다중회귀분석에서 총 콜레스테롤의 경우 남자에서는 체지방 비율, 나이, 체질량지수 모두가 총 콜레스테롤에 유의한 영향을 미치는 변수로 나왔으며$(R^2=0.1286)$, 여자에서는 체지방 비율과 나이가 유의한 영향을 미치는 변수였다$(R^2=0.3399)$. LDL/HDL비의 경우는 남자에서 체질량지수만이 유의한 영향을 미치는 변수였고$(R^2=0.0954)$, 여자에서는 체지방 비율, 나이, 체질량지수 모두가 유의한 영향을 미치는 변수였다$(R^2=0.3164)$. 수축기 및 확장기 혈압을 종속변수로 한 다중회귀 분석에서는 남자에서는 수축기 혈압에 나이, 저밀도 지단백, 총 콜레스테롤이 유의한 영향을 미치는 변수였고$(R^2=0.1297)$, 확장기 혈압에는 나이만이 유의한 영향을 미치는 변수였다$(R^2=0.0972)$. 여자에서는 수측기 혈압에 나이와 총 콜레스테롤이 유의한 영향을 미치는 변수였고$(R^2=0.1705)$, 확장기 혈압에는 나이만이 유의한 영향을 미치는 변수였다$(R^2=0.1218)$. 이상의 결과에서 체지방 비율은 비만이나 혈청 지질치는 잘 반영한다고 생각할 수 있으나 혈압을 반영하는데는 미흡한 점이 있다고 생각되며 앞으로 체지방 비율과 혈청 지질치 및 혈압과의 관련성을 확립하기 위해서는 본 연구에서 고려하지 않은 혈압에 미치는 다른 요인들을 독립변수로 고려한 추가 보완 연구가 필요할 것으로 생각된다. This study was conducted to clarify the relationship of body fat percent with serum lipid level and blood pressure in adults. The study subjects were 472 men and 189 women who visited Multiphasic Health Screening Center of Yeungnam University Hospital in Taegu from May 20 to September 30, 1994. The relationship of serum lipid and blood pressure with BMI, Katsura index, atherogenic index, which calculated from the health screening data and body fat percent measured by impedance fat meter(model SIF-819) were analyzed. Three groups were classified as Group I (men : body fat Percent $\geq$ 20, women : body fat percent $\geq$ 25), Group II (men : 15 $\leq$ body fat percent< 20, women : 20 $\leq$ body fat percent< 25), Group III(men : body fat percent < 15, women body fat percent <20). In this study, Group I accounted for 3.2% in men, 3.7% in women. Weight was significantly different among three groups in both sexes(p<0.01) and height was not significantly different among three groups. In men, serum total cholesterol, triglyceride, high density lipoprotein, low density lipoprotein, atherogenic index were significantly different(p<0.01). In women, serum total cholesterol and low density lipoprotein were significantly different(p<0.05) but there was no differences in triglyceride and high density lipoprotein among three groups. BMI and Katsura index were significantly different among three groups in both sexes(p<0.01). In men, body fat percent was positively correlated with weight, BMI, Katsura index, total cholesterol, triglyceride, low density lipoprotein, atherogenic index and systolic and diastolic blood pressures, and negatively correlated with high density lipoprotein. In women, body fat percent was positively correlated with age, height, weight, BMI, Katsura index, total cholesterol, triglyceride, low density lipoprotein and atherogenic index, and negatively correlated with high density lipoprotein. But there was no significant correlation between body fat percent and blood pressure in women. In multiple regression analysis for total cholesterol, fat percent, age and BMI were significant independent variables in men$(p<0.05,\;R^2=0.1286)$, and body fat percent and age in women$(p<0.05,\;R^2=0.3399)$. In case of LDL/HDL ratio, only BMI was a significant independent variable in menu$(p<0.01,\;R^2=0.0954)$, and body fat percent, age and BMI in women$(p<0.05,\;R^2=0.3164)$. In multiple regression analysis, age, low density lipoprotein and total cholesterol were significant independent variables on systolic blood pressure in men$(p<0.05,\;R^2=0.1297)$, age and total cholesterol in women$(p<0.05,\;R^2=0.1705)$. On diastolic blood pressure, only age was a significantly independent variable in men$(p<0.01,\;R^2=0.0972)$ and women$(p<0.01,\;R^2=0.1218)$. From the result of this study, it could concluded that body fat percent was significantly associated with other obesity indices and serum lipid, but had no significant association with blood pressure. To establish the relationship of body fat percent with blood pressure, further study which consider other variables that may have an effect on blood pressure should be performed.

The Associations of Percent Body Fat with Dietary Intake, Plasma Lipids, Lipoprotein(a), and PAI-1 in Middle Aged Korean Adults

Kim Rim, Jean-Chinock,Kang, Soon-Ah,Hiojung Wee Korean Society of Community Nutrition 1998 대한지역사회영양학회지 Vol.3 No.5

This study was designed to investigate the associations of the percent body fat dietary intake, plasma lipoprotein profile, lipoprotein(a), and plasminogen activator inhibitor-1(PAI-1) concentrations of 1982 Korean subjects(men : 1000 and women : 982) between the ages of 40 and 59 years. The dietary assessment consisted of twenty-four hour dietary records and food frequency questionnaires. The subjects were identified into one of the five rating groups of % body fat : lean, underweight, normal, overweight and obese groups. The biochemical assessment included measurements of plasma total cholesterol(TC), HDL-cholesterol(HDL-C), LDL-cholesterol(LDL-C), triglyceride(TG), lipoprotein(a)(Lp(a)), and PAI-1. With respect to the ratio of percent energy intake of carbohydrate : protein : fat of the normal group of the women was 62% : 17% : 20%, respectively. Women apparently had a higher intake of carbohydrates than men(52% : 17 : 20%) did. There was a linear relationship between energy intake and % body fat in both mean and women(with the exception of the underweight group of women). The relationship of % body fat of men to the protein and fat intake was higher than that of the carbohydrate intake. Of the men in the study, intakes of energy, protein and alcohol were positively correlated to % body fat. In women, energy, carbohydrate and protein intake were positively correlated to % body fat, however, the fat, cholesterol and alcohol intake did not show any correlation to the % body fat in women. This study showed that % body fat was positively correlated with plasma TC, LDL-C, PAI-1 levels, and TG, but the % body fat was negatively correlated with plasma HDL-C level in both men and women. These results indicated that the high energy intake of obese or overweight subjects might contribute to several of the biochemical indices fo coronary heart disease(CHD) risk. In conclusion, increased energy intake is associated with overweight or obesity in middle aged Korean people. There was no relationship between % energy intake of fat and % body fat in the study, in middle-aged Korean men and women. The plasma lipid profile and PAI-1 level thought to be the risk factors of CHD were positively associated with percent body fat in middle aged Korean people.

한국 성인남성의 체지방률에 따른 체력수준의 연관성

박세정(Park, Sae-Jong),최규정(Choi, Kyoo-Jeong),송홍선(Song, Hong-Sun),김광준(Kim, Kwang-Joon),성봉주(Sung, Bong-Ju),소위영(So, Wi-Young) 한국체육과학회 2012 한국체육과학회지 Vol.21 No.6

The purpose of this study was to examine whether the percent body fat was related to the level of physical fitness in Korean men. The subjects were men aged between 19 and 64 years (n = 2,419) who participated National Fitness Award in Korea between May 2012 and October 2012. They were divided into 3 groups: those with <20% body fat, 20-25% body fat, and >25% body fat. The physical fitness tests consisted of grip strength, sit-ups, a progressive aerobic cardiovascular endurance run (PACER), sit-and-reach, shuttle run, and standing long jump. The inter-group differences in physical fitness level were analyzed by one-way analysis of variance via Tukey post-hoc test. The results indicated that compared to the <20% body fat group, the 20-25% body fat group (overweight group) and >25% body fat group (obese group) had a lower fitness level as judged by grip strength, sit-ups, the PACER, sit-and-reach, shuttle run, and standing long jump (p<.05). We concluded that among adult Korean men, fitness level was lower in those with a higher percentage of body fat than in those with lower percentage of body fat.

수분 및 기질 섭취가 체수분량과 체지방율의 변화에 미치는 영향

임순영(Lim Soon-young),권영우(Kwon Young-Woo),김송준(Kim Song-Jun),이종삼(Lee Jong-Sam),전중기(Jun Joong-Ki) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.3

The purpose of this study was to investigate the effect of water and energy substrate intake on the volume of body fluid and percent body fat. Two experiments were carried out using young and healthy subjects. In the first experiment, 48 subjects consumed total volume of 1.2 L of water and body composition measurement was taken. In the second study, total 37 subjects were used, and randomly allocated to four experimental groups: control (CON, n=9), carbohydrate supplement (CHO, n=10), creatine supplement (Cre, n=9), and carbohydrate and creatine supplement (CHO+Cre, n=9). Carbohydrate was provided to intake 40 g for each time, 3 timesㆍd?¹ for 3 days, and creatine was given to consume 5 g for each time, 6 timesㆍd?¹ for 5 days. For subjects who were in CHO+Cre, carbohydrate was given for 3 days and creatine was given for 5 days. After consume 1.2 L of water, % body fat (%BF) and skeletal muscle mass increased by 3.3% (17.9±4.9% [pre] vs. 18.5±4.7% [post]) and 2.2% (26.7±6.6 ㎏ [pre] vs. 27.3±6.6 ㎏ [post]). With Consuming of energy substrate (either CHO or Cre), there was only significant increase in body mass (BM) in CHO + Cre. Interestingly this was induced by increased skeletal muscle mass rather than increased body fat mass. As far as body fat measurement is concerned, skin fold thickness was not affected by consuming energy substrate whereas %BF was shown significant increase when near infrared interactance measurement was adopted. Base on these results, following conclusions were drawn. Using bioimpedance analysis, water or fluid consumption would significantly ncrease in % body fat. Short term carbohydrate or creatine intake would not cause to increase in body mass and/or %BF. Short term creatine intake would not cause to increase in body mass and/or %BF. Intaking both carbohydrate and creatine simultaneously for short period of time may possibly cause to increase in total body mass, as well as skeletal muscle mass or %BF. Percent BF or total BF mass may differently evaluated by using different techniques, that needs to be examined far more researches.

생체전기 저항법에 의한 체지방율과 다른 계측치간의 상관성 연구

염혜원,김수정,황일태,홍영미,Yom, Hye Won,Kim, Su Jung,Whang, Il Tae,Hong, Young Mi 대한소아청소년과학회 2003 Clinical and Experimental Pediatrics (CEP) Vol.46 No.8

목 적 : 소아에서의 비만은 성인 비만으로 이행되기 쉽고 합병증으로 고지혈증, 고혈압, 당뇨, 관상동맥질환, 지방간 등이 초래될 수 있어 비만의 정확한 진단과 함께 예방이 필요하다. 이에 저자들은 비만을 측정하는데 있어서 보다 객관적이고 정확한 생체전기 저항법과 다른 계측치간의 상관성을 알아보기 위해 본 연구를 시행하였다. 방 법 : 7세에서 18세 사이의 초등학교, 중학교, 고등학교 학생 1,035명을 대상으로 하였다. 신장과 체중을 측정한 후 BMI를 구하였고 상완 둘레는 견갑골의 견봉과 주두의 중간 지점에서 줄자를 이용하여 측정하였다. ST 두께는 Holtain/Tanner-Whitehouse skinfold 캘리퍼로 견갑골하 부위와 삼두근 부위에서 피부주름 두께를 측정하였고 생체전기 저항은 InBody 2.0(Biospace, Seoul, Korea) 제품을 사용하여 각 대상에서 근육량, 제지방량(lean body mass), 체지방율, 복부 지방율을 측정하였다. 생체전기 저항법과 체질량지수, 피지 두께법 사이의 상관 관계를 구하였고, 같은 성별과 연령에서 생체전기 저항법에 의한 체지방율 85 백분위수와 95 백분위수 이상인 군을 각각 양성군으로 하였을 때 ST와 BMI가 체지방을 예측할 수 있는 민감도 및 특이도를 구하였다. 결 과 : 1) 생체전기 저항법과 피지 두께에 의한 체지방율의 상관계수는 0.835, 생체전기 저항법과 BMI와의 상관계수는 0.749로 비교적 높은 상관관계를 보였다. 2) 같은 성별과 연령에서 생체전기 저항법에 의한 체지방율 85 백분위수 이상을 양성군으로 하였을 때 85 백분위수 이상의 ST가 체지방을 예측할 수 있는 민감도는 69.9%, 특이도는 94.5%이었다. 3) 같은 성별과 연령에서 생체전기 저항법에 의한 체지방율 95 백분위수 이상을 양성군으로 하였을 때 95 백분위수 이상의 피지 두께가 체지방을 예측할 수 있는 민감도는 57.7%, 특이도는 97.6%이었다. 4) 같은 성별과 연령에서 생체전기 저항법에 의한 체지방율 85 백분위수 이상을 양성군으로 하였을 때 85 백분위수 이상의 BMI가 체지방을 예측할 수 있는 민감도는 81.8%, 특이도는 96.9%이었다. 5) 같은 성별과 연령에서 생체전기 저항법에 의한 체지방율 95 백분위수 이상을 양성군으로 하였을 때 95 백분위수 이상의 BMI가 체지방을 예측할 수 있는 민감도는 84.9%, 특이도는 99.3%이었다. 결 론 : 생체전기 저항법에 의한 체지방 측정은 ST와 BMI와 상관성이 높았으며, 생체전기 저항법에 의한 체지방 측정은 객관적이고 정확하고 특별한 기술을 필요로 하지 않는 장점이 있어 비만 진단에 유용하리라 생각된다. Purpose : Obesity is a significant health problem with medical and psychological consequences for children and adolescents. The purpose of this study was to assess the correlation between body fat percent using bioelectrical impedance(BI) and other variable methods. Methods : We measured height, weight, body mass index(BMI) and body fat percent by skinfold thickness(ST) and BI in 1,035(496 male; 539 female) children from seven to 18 years of age. The correlation coefficients between BI and each of the other different methods were obtained. The sensitivity and specificity to predict obesity by these several methods were studied. Results : Fat percent estimated by BI analysis and BMI showed a strong correlation(r=0.749). Fat percent estimated by BI analysis and ST showed a very strong correlation(r=0.835). At the 95th percentile cut-off point for BI, ST showed a sensitivity of 57.7%, and a specificity of 97.6% for estimating body fat. At the 95th percentile cut-off point for BI, BMI showed a sensitivity of 84.9%, and a specificity of 99.3% for estimating body fat. Conclusion : The fat percent estimated by BI analysis correlated strongly with ST or BMI. BI analysis is an objective and accurate method for estimating body fat in childhood obesity.

정상 체중 및 허리둘레를 갖는 성인 남자에서 체중, 체지방률, 허리둘레의 변화에 따른 혈압, 혈당, 지질 수치의 변화

최호천,김현진,민성준,이기헌,김경우,오승민,유태우 대한가정의학회 2010 Korean Journal of Family Medicine Vol.31 No.6

Background: Metabolic indexes (blood pressure, blood glucose, and lipid) differ depending on lower or upper normal value of obesity indexes (weight, percent-body-fat, and waist circumference) despite normal value. Therefore, we examined metabolic indexes changes across obesity indexes changes. Methods: We analyzed 344 adult men who received routine-checkups with normal weight and waist circumference before and after follow-up. We used multiple-linear-regression to examine associations between changes of obesity indexes and metabolic indexes before and after follow-up. We examined differences of metabolic indexes by t-test and odds ratios of normal or abnormal metabolic indexes by multiple-logistic-regression in groups where obesity indexes were increased and decreased. Results: The mean follow-up was 1.38 ± 0.32 years and there were associations between weight change rate and changes in systolic-blood-pressure (SBP), diastolic-blood-pressure (DBP), triglyceride (TG), and high–density-lipoprotein (HDL) (P = 0.001, 0.03, 0.001, 0.01), associations between percent-body-fat change and changes in SBP, DBP, fasting-blood-glucose (FBG) and TG (P = 0.02, 0.002, < 0.001, 0.03), and associations between waist circumference change rate and changes in FBG, TG, HDL (P = 0.01, 0.01, 0.02). There were significant SBP and HDL differences in weight decrease and increase groups (P = 0.04, < 0.001), FBG difference in percent-body-fat decrease and increase groups (P = 0.01), and FBG and TG differences in waist circumference decrease/increase groups (P = 0.03, 0.03). As compared with percent-body-fat decrease group, percent-body-fat increase group had odds ratio of FBG ≥ 100 of 2.98 (95% confidential interval [CI], 1.18 to 7.51)with a significance on only FBG of initially normal metabolic components and conversely percent-body-fat decrease group had odds ratio of FBG < 100 of 3.22 (95% CI, 1.21 to 8.60) with a significance on only FBG of initially abnormal metabolic components. Conclusion: Increased obesity indexes even within normal range, could change metabolic indexes. 연구배경: 비만 지표(체중, 체지방률, 허리둘레)가 정상 범위라도 낮은 정상과 높은 정상간에 대사 지표(혈압, 혈당, 지질)는 차이를 보인다. 따라서, 정상 체중 및 허리둘레를 지닌 성인에서 비만 지표가 변할 때 대사 지표의 변화를 보고자 하였다. 방법: 2001년 4월에서 2005년 2월까지 검진센터를 방문한 성인 남자 중 1-2년 추적 전후에 정상 체중 및 허리둘레를 유지한 344명을 대상으로 하였다. 추적 전후 비만 지표 변화율과대사 지표 변화량과의 상관성을 다중회귀분석을 통해 실시했고 비만 지표 증가/감소군에서 대사 지표의 변화를 t-검정을통해 보았다. 초기에 대사 지표가 정상일 때 비만 지표 감소/증가군에서 대사 지표가 비정상이 되는 교차비를 로지스틱회귀분석을 통해 구했고, 반대로 초기에 대사 지표가 비정상일 때 비만 지표 증가/감소군에서 대사 지표가 정상이 되는 교차비를 구했다. 결과: 평균 추적은 1.38±0.32년이었고 체중 변화율은 수축기혈압(SBP), 이완기 혈압(DBP), 중성지방(TG), 고밀도 지단백(HDL) 변화량과(P-value, 0.001, 0.03, 0.001, 0.01), BMI 변화량은SBP, DBP, 혈당(FBG), TG 변화량과(P-value, 0.02, 0.002, <0.001,0.03) 허리둘레 변화률은 FBG, TG, HDL 변화량과 유의한 상관성이 있었다(P-value, 0.01, 0.01, 0.02). SBP, HDL은 체중 감소/증가군에서(P-value, 0.04, <0.001), FBG은 체지방률 감소/증가군에서(P-value, 0.01), FBG, TG는 허리둘레 감소/증가군에서유의한 차이가 있었다(P-value, 0.03, 0.03). 초기에 정상이었던각 대사지표 중에, FBG에 대해서만 체지방률 감소군에 비해증가군이 FBG100 될 교차비는 2.98였고(P-value, 0.02), 초기에 비정상이었던 각 대사지표 중에도, FBG에 대해서만 체지방률 증가군에 비해 감소군이 FBG<100 될 교차비는 3.22였다(P-value, 0.02). 결론: 정상 범위에서 비만 지표의 변화라도 대사 지표가 변할수 있으므로, 비만 지표가 증가하는 것은 좋지 않다.

원저 : 저신장과 비만도의 상관성 분석 -저신장을 주소로 내원한 환아 명을 대상으로-

이경희 ( Kyung Hee Lee ),신현택 ( Hyun Taeg Shin ),송재철 ( Jae Chul Song ),이재성 ( Jae Sung Lee ),곽창규 ( Chang Kyu Kwak ),박선영 ( Sun Young Park ),한승무 ( Seung Moo Han ),임사비나 ( Sabina Lim ) 한방비만학회 2005 한방비만학회지 Vol.5 No.1

Objectives : The purpose of this study was to investigate correlation between short stature and obese degree. And we also wanted to know the characteristics of patients visited clinic in the name of ``short stature``. Methods : Height, body weight, BMI, fat mass, lean body mass, percent body fat were taken intended for 236 patients in the name of short stature. To all the patient questionnaire for growth clinic was drawn up, and ultrasound scan was taken through calcaneous of the right foot. The patients were classified to three groups - short, average, tall group - according to relative position of mid-parental height. It was analysed that the differences between groups in obese degree. Also was investigated correlation between position of short stature and obese degree, and between obese degree and bony maturity. Results & Conclusion : 1. The average ages of patients in the name of ``short stature`` were 12.69±3.93 years old in boys, 10.66±3.67 years old in girls. And it seemed to be just before second rapid maturing period. 2. The average BMI were 20.58±4.07kg/m2 in boys, 18.65±2.85kg/m2in girls, and average percent body fat were 21.99±7.35% in boys, 26.01±6.35% in girls. 3. The numbers of obese children were 34(31.2%) in boys, 19(14.9%) in girls on the basis of BMI. And the numbers were 39(35.8%) in boys, 53(41.7%) in girls on the basis of percent body fat. There was a big difference in case of girls. 4. The numbers of AG(average group) were 48(44.0%) in boys, 60(47.2%) in girls, the numbers of SG(short group) were 35(32.1%) in boys, 31(24.4%) in girls, and numbers of TG(tall group) were 26(23.9%) in boys, 35(27.6%) in girls. 5. There were no significant differences among the groups in BMI, lean body mass, fat mass, percent body fat. Only significant difference in DI(disease index). 6. There were no significant correlation between PH(percent height) and BMI, leanbody mass, fat mass, percent body fat. Only significant correlation in DI(disease index). 7. There were no significant differences between DA(difference between bone age and chronorogical age) and BMI, leanbody mass, percent body fat. Only significant correlation in fat mass.

비만과 심혈관 질환 위험인자와의 상관관계 분석 -건강검진 대상자를 중심으로-

조태영 ( Tae Young Cho ),조현철 ( Hyun Chol Cho ),홍서영 ( Seo Young Hong ),송윤경 ( Yun Kyung Song ),임형호 ( Hyung Ho Lim ) 한방비만학회 2004 한방비만학회지 Vol.4 No.1

Background : Recently obesity has become a social problem in all over the world including Korea. It is known that obesity is closely related with cardiovascular disease. Many studies are carrying out in the relation between several obesity indices, such as body mass index(BMI), waist-circumference(WC), body fat percent and risk factors of cardiovascular disease. Objective : This study was done in order to investigate correlation of obesity and cardiovascular risk factors. Method : We gathered totally 138 subjects who have taken health screening test in university hospital. With the exception of 40 abnormal cases on current illness and laboratory study, 98 healthy cases were analysed. We divided the groups as normal, overweight, obese group according to body mass index (22.9kg/m2 and below / 23~24.9kg/m2 / 25kg/m2 and above) and investigated the relationship between obesity based on body mass index(BMI) and cardiovascular risk factors. And investigated the relationship between each cardiovascular risk factor and body mass index, waist-hip ratio, body fat percent. Results : With the exception of blood pressure, other lab data such as total cholesterol, triglycerid, glucose were significantly different between the three groups divided by body mass index(22.9kg/m2 and below / 23~24.9kg/m2 / 25kg/m2 and above). And Correlation coefficient of cardiovascular risk factors with body mass index, waist-hip ratio, body fat precent were acquired. Conclusion : We have concluded that the body mass index and waist-hip ratio body fat precent were predictive factors cardiovascular disease.

한국 성인여성의 체지방률 수준에 따른 체력수준 연구

박세정(Saejong Park),소위영(Wi-Young So) 한국생활환경학회 2013 한국생활환경학회지 Vol.20 No.4

The purpose of this study was to examine the study between %body fat and physical fitness in Korean women. The subjects were 5,868 women aged between 20 and 66 who participated in the National Fitness Award program in Korea between May 2012 and November 2012. They were divided into 4 groups: those with <25% body fat (reference group), 25-<30% body fat, 30-<35% body fat, and over 35% body fat. The battery of physical fitness tests included the progressive aerobic cardiovascular endurance run (PACER), shuttle run, sit-ups, grip strength, sitand-reach, and the standing broad jump. Differences between the physical fitness levels among groups were analyzed by one-way analysis of variance with the Tukey’s post-hoc test. The results showed that the <25% body fat group had a higher physical fitness level than the other 3 groups, as judged by the results in PACER, shuttle run, sit-ups, sit-and-reach, and standing broad jump tests; however, this trend was not seen in the grip strength test. We concluded that women with a higher percentage of body fat had a lower physical fitness level.

Pursuing 0% body fat?: Inappropriate information in online newspapers

( Haoxuan Ruan ),( Hyuk Chung ) 한국체육학회 2016 국제스포츠과학 학술대회 Vol.2016 No.1

Purpose: People should have certain levels of body fat to maintain a healthy life; 3% for men and 12% for women. Regardless of this fact some Korean online articles describe that ‘zero percent body fat’ is realistic and challenging. This study investigated the current situation of inappropriate body composition information shown in online newspapers especially articles including a term ‘0% body fat’. Method: Using dominant web search engines in Korea articles including ‘0% body fat’ or similar expressions were collected. Among 1,053 articles 165 were used for analyses after the data cleaning. Frequency analyses were conducted based on variables such as appropriateness of information, newspapers, writers (reporters), and post years. Result: Only two articles out of 165 provided appropriate information on body fat. A total of 60 online newspapers were involved and a dominant newspaper posted 30 articles with inappropriate information. For the writers’ status 136 articles (82.4%) were written by reporters, 25 (15.2%) by departments, and two (1.2%) by specialists. Articles were most frequently posted online in 2009 and 2015. Conclusion: Because the spread of online media is invasive and immense the writers should consider not only the quality of information but also its influence to people. The results were somewhat surprising in that not many people, technically none, refuted unrealistic ideas and information shown in e-Newspapers. It is recommended that a) newspapers construct a system for detecting & controlling false information, b) writers (esp., reporters) participate in a body composition class, and c) specialists and researchers in exercise & sport science fields actively contribute to setting this situation right.