Relative Lean Body Mass and Waist Circumference for the Identification of Metabolic Syndrome in the Korean General Population

Eunjoo Kwon, Eun-Hee Nah, Suyoung Kim and Seon Cho
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Eunjoo Kwon: Health Promotion Research Institute, Korea Association of Health Promotion, 372 Hwagok-ro, Gangseo-Gu, Seoul 07572, Korea
Eun-Hee Nah: Health Promotion Research Institute, Korea Association of Health Promotion, 372 Hwagok-ro, Gangseo-Gu, Seoul 07572, Korea
Suyoung Kim: Health Promotion Research Institute, Korea Association of Health Promotion, 372 Hwagok-ro, Gangseo-Gu, Seoul 07572, Korea
Seon Cho: Health Promotion Research Institute, Korea Association of Health Promotion, 372 Hwagok-ro, Gangseo-Gu, Seoul 07572, Korea

IJERPH, 2021, vol. 18, issue 24, 1-10

Abstract: Lean body mass (LBM) comprises organs and muscle, which are the primary determinants of energy expenditure and regulation of glucose and lipid metabolism. Excessive abdominal fat is associated with metabolic abnormality. Little is known about the relationship between metabolic abnormality and LBM and waist circumference (WC), especially in the Asian general population. The aim of this study was to clarify this relationship. We performed a cross-sectional study with 499,648 subjects who received health check-ups at 16 health promotion centers in 13 Korean cities between January 2018 and October 2019. The subjects were categorized into four groups: (a) High (H)-RLBM (relative lean body mass)/Normal (N)-WC, (b) High-RLBM/Abnormal (A)-WC, (c) Low (L)-RLBM/Normal-WC, and (d) Low-RLBM/Abnormal-WC. RLBM was calculated using fat mass data that were estimated via bioelectrical impedance analysis. L-RLBM/A-WC was significantly associated with metabolically unhealthy status (OR: 4.40, 95% CI: 4.326–4.475) compared to H-RLBM/N-WC. L-RLBM/N-WC (OR: 2.170, 95% CI: 2.122–2.218) and H-RLBM/A-WC (OR: 2.713, 95% CI: 2.659–2.769) were also significantly related to metabolic unhealthy status. The cut-offs of RLBM for predicting metabolic syndrome (MetS) were 74.9 in males and 66.4 in females ( p < 0.001). L-RLBM and A-WC are associated with metabolic abnormality in the Korean general population. RLBM is an anthropometric index that can be used to predict MetS in primary health care.

Keywords: lean body mass; waist circumference; metabolic abnormality; metabolic syndrome; bioelectrical impedance analysis; optimal cut-offs of relative lean body mass (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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