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首页> 外文期刊>The British Journal of Nutrition >Predictive capacity and cut-off points of adiposity indices for body fat prediction according to adolescent periods
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Predictive capacity and cut-off points of adiposity indices for body fat prediction according to adolescent periods

机译：青春期肥胖指数预测能力及肥胖指标临界点

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摘要

Abstract Overweight is increasing in the adolescent population and became a public health problem in the world. This study aimed to identify the body adiposity indices (BAI) with the best capacity to predict excess fat tissue and propose cut-off points for them, according to sex and adolescence period. This is a cross-sectional study. We calculated BMI, conicity index (CI), BAI, body roundness index (BRI), waist:height ratio (WtHR) and waist:hip ratio. Predictive capacity and cut-off points of adiposity indices were established by ROC (receiver operating characteristic) curves. We determined AUC-ROC and CI, stratified by sex and adolescence period. The best index to identify excess body fat in 10-13-year-old female adolescents was the WtHR (AUC = 0·92), like the BAI in girls aged from 14 to 16 years old (AUC = 0·87) and 17 to 19 years old (AUC = 0·80). In male adolescents aged from 10 to 13 years old and 14 to 16 years old, the best index was the WtHR (AUC = 0·93 and AUC = 0·8, respectively), like the BAI in boys aged from 17 to 19 years old (AUC = 0·95). The use of indices with specific cut-off points for each period of adolescence and according to sex is important for the reliable diagnosis of excess body fat. It is advisable to use indices together to obtain a more accurate assessment. Thus, the WtHR and BAI are reproducible and reliable, with high sensitivity and specificity values, and can be used together with the BMI.
机译：摘要 青少年超重日益严重，已成为世界范围内的公共卫生问题。本研究旨在根据性别和青春期，确定最能预测多余脂肪组织的身体肥胖指数（BAI），并提出其临界点。这是一项横断面研究。我们计算了BMI、锥度指数（CI）、BAI、身体圆度指数（BRI）、腰高比（WtHR）和腰臀比。通过ROC（受试者工作特征）曲线建立肥胖指数的预测能力和临界点。我们确定了AUC-ROC和CI，按性别和青春期分层。识别 10-13 岁女性青少年体内脂肪过多的最佳指标是 WtHR （AUC = 0.92），就像 14-16 岁 （AUC = 0.87） 和 17-19 岁 （AUC = 0.80） 女孩的 BAI 一样。在 10 至 13 岁和 14 至 16 岁的男性青少年中，最佳指数是 WtHR（分别为 AUC = 0.93 和 AUC = 0.8），就像 17 至 19 岁男孩的 BAI （AUC = 0.95）。根据性别，使用具有每个青春期特定临界点的指数对于可靠诊断体内脂肪过多非常重要。建议同时使用指数以获得更准确的评估。因此，WtHR 和 BAI 具有可重复性和可靠性，具有高灵敏度和特异性值，可与 BMI 一起使用。

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