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KMID : 1134820140430050763
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Journal of the Korean Society of Food Science and Nutrition
2014 Volume.43 No. 5 p.763 ~ p.771
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Association between Dietary Sodium Intake and Abdominal Obesity in Pre-diabetes Korean Adults
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Lim So-Young
Yang Soo-Jin
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Abstract
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The objective of this study was to assess the relationship between dietary sodium intake and prevalence of abdominal obesity in Korean adults. We used data from the Korea National Health and Nutrition Examination Survey Ⅴ-1 and analyzed data on 4,475 Koreans (≥30 years old). Subjects were divided into three groups according to fasting plasma glucose (FPG): 1) normal (FPG <100 mg/dL), 2) pre-diabetes (100 mg/dL≤ FPG ≤125 mg/dL), and 3) diabetes (FPG ≥126 mg/dL or subjects diagnosed with diabetes). The subjects in each category were stratified by dietary sodium intake as well as index of abdominal obesity. We found that dietary sodium intake was positively correlated with waist circumference (WC) (P=0.002) and was particularly high in the pre-diabetes group. In multiple logistic regression analysis, the normal and diabetes groups showed no association between dietary sodium intake and WC, whereas the pre-diabetes group with a high sodium intake exhibited a significant association (odds ratio (OR)=1.479, P=0.029) between dietary sodium intake and WC. Further, the OR for abdominal obesity in the high sodium intake group with pre-diabetes was 1.590 after adjusting for age and sex (P=0.012). In addition, the ORs for the prevalence of abdominal obesity with fasting glucose, fasting insulin, and homeostasis model assessment of insulin resistance were significantly higher in the pre-diabetes group with high sodium intake compared with low sodium intake. Moreover, these associations were significant even after adjusting for confounding variables (model 2: age and sex; model 3: age, sex, and total energy intake). Our results suggest a strong association between sodium intake and abdominal obesity in pre-diabetes Korean adults.
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KEYWORD
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abdominal obesity, pre-diabetes, sodium intake
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