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Accepted manuscript

Validation of measurement of body composition by DXA and BIA and body composition’s profiling in Tibetan’s adults

Published online by Cambridge University Press:  28 April 2025

Wenxiu Jian ,
Bin Zhang ,
Yue Ma ,
Xiao Tang ,
Tuan Thanh Nguyen ,
Meng Lv ,
Xiangyang Meng ,
Tiemei Li ,
Xiaomin Sun  and
Youfa Wang
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Wenxiu Jian
Affiliation:
Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, Xining 810001, China
Bin Zhang
Affiliation:
School of Mathematics and Statistics, Qinghai Minzu University, Xining 810007, China
Yue Ma
Affiliation:
International Obesity and Metabolic Disease Research Center, Global Health Institute, School of Public Health, Xi’an Jiaotong University, Xi’an 710061, China
Xiao Tang
Affiliation:
Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, Xining 810001, China
Tuan Thanh Nguyen
Affiliation:
Alive & Thrive, FHI 360, Hanoi, 11022, Vietnam
Meng Lv
Affiliation:
International Obesity and Metabolic Disease Research Center, Global Health Institute, School of Public Health, Xi’an Jiaotong University, Xi’an 710061, China
Xiangyang Meng
Affiliation:
Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, Xining 810001, China
Tiemei Li
Affiliation:
Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, Xining 810001, China
Xiaomin Sun
Affiliation:
International Obesity and Metabolic Disease Research Center, Global Health Institute, School of Public Health, Xi’an Jiaotong University, Xi’an 710061, China
Youfa Wang
Affiliation:
International Obesity and Metabolic Disease Research Center, Global Health Institute, School of Public Health, Xi’an Jiaotong University, Xi’an 710061, China
Yanming Ren*
Affiliation:
Medical College, Qinghai University, Xining, China
Wen Peng*
Affiliation:
Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, Xining 810001, China Qinghai Provincial Key Laboratory of Prevention and Control of Glucolipid Metabolic Diseases with Traditional Chinese Medicine, Xining 810001, China
*
*Corresponding authors: Yanming Ren, Medical College, Qinghai University, No. 16 Kunlun Road, Xining, 810000, China, Email: [email protected]; Wen Peng, MD, MPH, Professor and Director, Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, No. 16 Kunlun Road, Xining, 810000, China, Email: [email protected]; Tel: +86-971-6104093
*Corresponding authors: Yanming Ren, Medical College, Qinghai University, No. 16 Kunlun Road, Xining, 810000, China, Email: [email protected]; Wen Peng, MD, MPH, Professor and Director, Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, No. 16 Kunlun Road, Xining, 810000, China, Email: [email protected]; Tel: +86-971-6104093
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Abstract

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Objective:

We aimed to validate In-Body BIA measures with DXA as reference and to describe the BC profiling of Tibetan adults.

Design:

This cross-sectional study included 855 participants (391 men and 464 women).Correlation and Bland-Altman analyses were performed for method agreement of In-Body BIA and DXA. BC were described by obesity and metabolic status.

Setting:

Bioelectrical Impedance Analysis (In-Body BIA) and Dual-energy X-ray absorptiometry (DXA) have not been employed to characterize the body composition (BC) of the Tibetan population living in the Qinghai-Tibet Plateau.

Participants:

A total of 855 Tibetan adults, including 391 men and 464 women, were enrolled in the study.

Results:

Concordance correlation coefficient for total fat mass (FM) and total lean mass (LM) between In-Body BIA and DXA were 0.91 and 0.89. The bias of In-Body BIA for percentages of total FM and total LM was 0.91% (2.46%) and -1.74% (-2.80%) compared with DXA, respectively. Absolute limits of agreement were wider for total FM in obese men and women and for total LM in overweight men than their counterparts. Gradience in the distribution of total and regional FM content was observed across different BMI categories and its combinations with waist circumference and metabolic status.

Conclusions:

In-Body BIA and DXA provided overall good agreement at group level in Tibetan adults, but the agreement was inferior in participants being overweight or obese.

Type
Research Paper
Information
Public Health Nutrition , Accepted manuscript , pp. 1 - 23
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of The Nutrition Society