Triponderal Mass Index rather than Body Mass Index in discriminating high adiposity in Brazilian children and adolescents.

IF 2.5 4区医学 Q3 BUSINESS

Nutricion hospitalaria Pub Date : 2024-11-05 DOI:10.20960/nh.05432

Fabio Ued, Murilo Jose Silveira Castro, Laura Ruy Bardi, Luiz Del Ciampo, Edson Zangiacomi Martinez, Ivan Savioli Ferraz, Andrea Aparecida Contini, Elza Mello, Carlos Alberto Nogueira-de-Almeida

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引用次数: 0

Abstract

Introduction: body mass index (BMI) is used worldwide to track excess weight; however, it has limitations in predicting body fat percentage (BF%). Triponderal mass index (TMI) has been studied as an alternative indicator to predict BF%.

Objective: to compare BMI and TMI as predictors of BF% and develop TMI cutoff points for screening high adiposity in Brazilian children and adolescentes.

Methods: a cross-sectional and multicenter study conducted with 226 individuals aged 5 to 17 years from two municipalities in the Southeast and South regions of Brazil. BF% was assessed by bioimpedancemetry. The association between BMI and TMI with BF% was assessed using generalized additive models. ROC curve analyzes were performed to verify the accuracy of BMI and TMI in detecting high adiposity. The areas under the curve (AUC) of BMI and TMI were compared using non-parametric analysis. The TMI cutoff points were obtained using Youden's J index.

Results: bioimpedancemetry detected high BF% in 54.1 % (95 % confidence interval [CI], 44.8-63.2) of boys and 63.5 % (95 % CI, 54.5-71.9) of girls. TMI was able to predict BF% better than BMI in males, presenting a higher R-square (0.737 versus 0.646, respectively). The TMI presented AUC significantly greater than BMI to indicate high adiposity in the entire population (p = 0.007) and in females (p = 0.014). TMI cutoff points for different age groups and sex were presented.

Conclusion: TMI proved to be a better predictor of excess body fat than BMI in Brazilian children and adolescents.

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在判别巴西儿童和青少年的高肥胖率方面，三倍体重指数比体重指数更重要。

导言：身体质量指数（BMI）在全球范围内被用于追踪超重情况；然而，它在预测体脂率（BF%）方面存在局限性。目标：比较 BMI 和 TMI 作为预测体脂率的指标，并制定 TMI 临界点，以筛查巴西儿童和青少年的高脂肪率。方法：对巴西东南部和南部地区两个城市的 226 名 5 至 17 岁的人进行横断面多中心研究。生物阻抗测量法评估了 BF%。采用广义相加模型评估了体重指数和体重指数与 BF% 之间的关系。为验证 BMI 和 TMI 在检测高脂肪率方面的准确性，进行了 ROC 曲线分析。使用非参数分析比较了 BMI 和 TMI 的曲线下面积（AUC）。结果：生物阻抗测量法检测出 54.1%（95% 置信区间 [CI]，44.8-63.2）的男孩和 63.5%（95% 置信区间 [CI]，54.5-71.9）的女孩有较高的 BF%。在男性中，TMI 比 BMI 更能预测 BF%，呈现出更高的 R 平方（分别为 0.737 和 0.646）。在整个人群中（p = 0.007）和在女性中（p = 0.014），TMI 的 AUC 明显高于 BMI，表明脂肪过多。结果显示了不同年龄组和性别的 TMI 临界点：结论：在巴西儿童和青少年中，TMI 比 BMI 更能预测体内脂肪过多的情况。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nutricion hospitalaria 医学-营养学

CiteScore

1.90

自引率

8.30%

发文量

181

审稿时长

3-6 weeks

期刊介绍： The journal Nutrición Hospitalaria was born following the SENPE Bulletin (1981-1983) and the SENPE journal (1984-1985). It is the official organ of expression of the Spanish Society of Clinical Nutrition and Metabolism. Throughout its 36 years of existence has been adapting to the rhythms and demands set by the scientific community and the trends of the editorial processes, being its most recent milestone the achievement of Impact Factor (JCR) in 2009. Its content covers the fields of the sciences of nutrition, with special emphasis on nutritional support.