利用人体测量和便携式a型超声来估计老年人体脂率的方程的开发和验证。

IF 2.6 Q3 NUTRITION & DIETETICS

Clinical nutrition ESPEN Pub Date : 2025-08-13 DOI:10.1016/j.clnesp.2025.08.012

Lara Vilar Fernandes , Gabriela Benatti de Oliveira , Rita S. Guerra , Xiayu Summer Chen , Flavia Cristina Drumond Andrade , Teresa F. Amaral , Ana Carolina Junqueira Vasques , Ligiana Pires Corona

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引用次数: 0

摘要

背景与目的：考虑到准确评估老年人体脂的方法的重要性，本研究旨在开发和验证使用便携式a型超声（US）和老年人人体测量数据估计体脂百分比（%BF）的方程。方法：横断面研究纳入健康老年人149例（≥60岁）。四分之三（n=111）随机分配给开发样本，四分之一分配给验证样本（n=38）。利用体重指数（BMI）、性别、肱三头肌、肩胛下、腹部和大腿前皮下脂肪厚度（SFT）、大腿围（TC）对发育样本进行多元回归分析，生成预测方程，并通过验证样本进行验证。结果：建立了3个方程，第一个方程有6个参数(R2=0.78；SEE=3.05)，第二次与第一次相同的6个参数加大腿围(R2=0.80；SEE=2.96)，第三组有3个参数(R2=0.77；看到= 3.19)。在开发和验证样品中，使用便携式A-mode US开发的方程估计的%BF与双能x射线吸收仪（DXA）估计的%BF之间没有统计学差异。3个方程的平均误差为0.16 ~ 0.27%，一致性限为-5.89 ~ 6.28%。结论：以性别、BMI、肱三头肌、肩胛下肌、腹部、股前SFT和TC为预测变量，是最佳模型。由于其实用性和快速性，只有一个美国测量（三头肌SFT）的方程可以作为临床实践中估计%BF的一种选择。

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Development and validation of equations to estimate the body fat percentage in older adults using anthropometric measurements and portable a-mode ultrasound

Background & aims

Considering the importance of accurate methods for assessing body fat in older adults, this study aimed to develop and validate equations for estimating body fat percentage (%BF) using portable A-mode ultrasound (US) and anthropometric data in older adults.

Methods

A total of 149 healthy older adults (≥60 years old) were included in the cross-sectional study. Three-fourths (n = 111) were randomly assigned to the development sample and one-fourth to the validation sample (n = 38). Prediction equations using body mass index (BMI), sex, triceps, subscapular, abdominal, and anterior thigh subcutaneous fat thickness (SFT), and thigh circumference (TC) were generated for the development sample through multiple regression analysis and validated through the validation sample.

Results

Three equations were developed, the first with six parameters (R² = 0.78; SEE = 3.05), the second with the same six parameters as the first plus thigh circumference (R² = 0.80; SEE = 2.96), and the third with three parameters (R² = 0.77; SEE = 3.19). There was no statistical difference between the %BF estimated by the equations developed using portable A-mode US and the %BF estimated by Dual-energy x-ray absorptiometry (DXA) in the development and validation samples. The three equations showed mean errors from 0.16 to 0.27 % and agreement limits from −5.89 to 6.28 %.

Conclusion

The best model had sex, BMI, triceps, subscapular, abdominal, anterior thigh SFT, and TC as predictor variables. The equation with only one US measurement (triceps SFT) could be an option for estimating %BF in clinical practice due to its practicality and quickness.

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来源期刊

Clinical nutrition ESPEN NUTRITION & DIETETICS-

CiteScore

4.90

自引率

3.30%

发文量

512

期刊介绍： Clinical Nutrition ESPEN is an electronic-only journal and is an official publication of the European Society for Clinical Nutrition and Metabolism (ESPEN). Nutrition and nutritional care have gained wide clinical and scientific interest during the past decades. The increasing knowledge of metabolic disturbances and nutritional assessment in chronic and acute diseases has stimulated rapid advances in design, development and clinical application of nutritional support. The aims of ESPEN are to encourage the rapid diffusion of knowledge and its application in the field of clinical nutrition and metabolism. Published bimonthly, Clinical Nutrition ESPEN focuses on publishing articles on the relationship between nutrition and disease in the setting of basic science and clinical practice. Clinical Nutrition ESPEN is available to all members of ESPEN and to all subscribers of Clinical Nutrition.