Application of body composition analysis in screening overweight and obesity of school-age children

LI Song-ting; ZHONG Yan

doi:10.11852/zgetbjzz2021-1392

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Chinese Journal of Child Health Care ›› 2022, Vol. 30 ›› Issue (5) : 540-543. DOI: 10.11852/zgetbjzz2021-1392

Clinical Research

Application of body composition analysis in screening overweight and obesity of school-age children

LI Song-ting, ZHONG Yan

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Abstract

Objective To evaluate the consistency between body fat percentage(BFP) and body mass index(BMI) in screening overweight and obesity of school-age children, and to explore the screening efficacy of body composition in screening dyslipidemia and nonalcoholic fatty liver(NAFL) of school-age children. Methods Children aged 7 to 12 years who visited the clinic of Children's Health Center of Hunan Children's Hospital from March to September in 2020 were selected as the study subjects, and the body composition was measured by bioelectrical impedance method. The consistency of BFP and BMI in screening overweight and obesity in children was evaluated. ROC curve was used to analyze the AUC of body composition indexes in screening dyslipidemia and NAFL, then the sensitivity and specificity of each best cutoff value were calculated. Results Totally 20.11% of children judged as normal by BMI were overweight and obese by BFP, and 4.98% of children judged as normal by BFP were overweight and obese by BMI with Kappa value of 0.867. The AUC for body fat mass (BF)screening dyslipidemia was 0.659 (P<0.05), with the sensitivity of 0.767 and specificity of 0.521 at an optimal cut-off value of 9.85 kg. The AUC for visceral fat area (VFA) screening NAFL was 0.851 (P<0.05), with a sensitivity of 0.781 and specificity of 0.778 at an optimal cut-off value of 86.50 cm². Conclusions BFP and BMI are highly consistent in screening overweight and obesity of school-age children. Body composition has better screening efficacy for NAFL in school-age children, and lower screening efficacy for dyslipidemia.

Key words

body composition / overweight and obesity / abnormal blood lipid / nonalcoholic fatty liver / children

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LI Song-ting, ZHONG Yan. Application of body composition analysis in screening overweight and obesity of school-age children[J]. Chinese Journal of Child Health Care. 2022, 30(5): 540-543 https://doi.org/10.11852/zgetbjzz2021-1392

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