The association between body roundness index and handgrip strength and muscle quality index: A cross-sectional study.

<h4>Background</h4>Sarcopenic obesity is characterized by a combination of obesity and sarcopenia. Body round index (BRI) is a novel anthropometric index that can more accurately assess body and visceral fat levels than body mass index or waist circumference. This study used data from th...

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Main Authors: Zhihao Wei, Tengfei Yu, Xufeng Jin, Guanyi Ma, Xianfeng Meng
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2025-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0322928
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author Zhihao Wei
Tengfei Yu
Xufeng Jin
Guanyi Ma
Xianfeng Meng
author_facet Zhihao Wei
Tengfei Yu
Xufeng Jin
Guanyi Ma
Xianfeng Meng
author_sort Zhihao Wei
collection DOAJ
description <h4>Background</h4>Sarcopenic obesity is characterized by a combination of obesity and sarcopenia. Body round index (BRI) is a novel anthropometric index that can more accurately assess body and visceral fat levels than body mass index or waist circumference. This study used data from the National Health and Nutrition Examination Survey (NHANES) to explore the relationship between BRI and handgrip strength (HGS) and muscle quality index (MQI) in American adults aged 20 and over.<h4>Methods</h4>This study used cross-sectional data from the 2011-2014 National Health and Nutrition Examination Survey (NHANES) with complete data on BRI, HGS, and MQI. We used multivariate linear regression models and smooth curve fitting methods to explore the relationship between BRI and HGS and MQI. In addition, subgroup analyses and interaction tests were performed to further analyze the potential association between these variables.<h4>Results</h4>A total of 5466 participants were finally included in this study, of whom 2807 were males and 2659 were females. The results showed that BRI was positively correlated with HGS and negatively correlated with MQI. In the fully adjusted model, the negative correlation between BRI and MQI was (β= -0.08, 95% CI = -0.08, -0.07), while the positive correlation with HGS was (β= 0.3 8, 95% CI = 0.29, 0.46), indicating that for every unit increase in BRI, MQI decreases by 0.08 units and HGS increases by 0.38 units (P < 0.0001). In addition, the relationship between BRI and HGS is an L-shaped curve. An inflection point is determined when BRI reaches 3.42. Before this threshold, for every unit increase in BRI, HGS increases significantly (β = 2.19, 95% CI = 1.66, 2.72).<h4>Conclusion</h4>The results showed that BRI was positively correlated with HGS and negatively correlated with MQI, meaning that higher BRI was associated with higher HGS and lower MQI. This highlights the importance of body fat distribution in muscle health and suggests that BRI can be used as an effective anthropometric indicator to predict grip strength and muscle mass.
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spelling doaj-art-4a64d2fa654e4bd4b0475d446e1107122025-08-20T03:53:57ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01205e032292810.1371/journal.pone.0322928The association between body roundness index and handgrip strength and muscle quality index: A cross-sectional study.Zhihao WeiTengfei YuXufeng JinGuanyi MaXianfeng Meng<h4>Background</h4>Sarcopenic obesity is characterized by a combination of obesity and sarcopenia. Body round index (BRI) is a novel anthropometric index that can more accurately assess body and visceral fat levels than body mass index or waist circumference. This study used data from the National Health and Nutrition Examination Survey (NHANES) to explore the relationship between BRI and handgrip strength (HGS) and muscle quality index (MQI) in American adults aged 20 and over.<h4>Methods</h4>This study used cross-sectional data from the 2011-2014 National Health and Nutrition Examination Survey (NHANES) with complete data on BRI, HGS, and MQI. We used multivariate linear regression models and smooth curve fitting methods to explore the relationship between BRI and HGS and MQI. In addition, subgroup analyses and interaction tests were performed to further analyze the potential association between these variables.<h4>Results</h4>A total of 5466 participants were finally included in this study, of whom 2807 were males and 2659 were females. The results showed that BRI was positively correlated with HGS and negatively correlated with MQI. In the fully adjusted model, the negative correlation between BRI and MQI was (β= -0.08, 95% CI = -0.08, -0.07), while the positive correlation with HGS was (β= 0.3 8, 95% CI = 0.29, 0.46), indicating that for every unit increase in BRI, MQI decreases by 0.08 units and HGS increases by 0.38 units (P < 0.0001). In addition, the relationship between BRI and HGS is an L-shaped curve. An inflection point is determined when BRI reaches 3.42. Before this threshold, for every unit increase in BRI, HGS increases significantly (β = 2.19, 95% CI = 1.66, 2.72).<h4>Conclusion</h4>The results showed that BRI was positively correlated with HGS and negatively correlated with MQI, meaning that higher BRI was associated with higher HGS and lower MQI. This highlights the importance of body fat distribution in muscle health and suggests that BRI can be used as an effective anthropometric indicator to predict grip strength and muscle mass.https://doi.org/10.1371/journal.pone.0322928
spellingShingle Zhihao Wei
Tengfei Yu
Xufeng Jin
Guanyi Ma
Xianfeng Meng
The association between body roundness index and handgrip strength and muscle quality index: A cross-sectional study.
PLoS ONE
title The association between body roundness index and handgrip strength and muscle quality index: A cross-sectional study.
title_full The association between body roundness index and handgrip strength and muscle quality index: A cross-sectional study.
title_fullStr The association between body roundness index and handgrip strength and muscle quality index: A cross-sectional study.
title_full_unstemmed The association between body roundness index and handgrip strength and muscle quality index: A cross-sectional study.
title_short The association between body roundness index and handgrip strength and muscle quality index: A cross-sectional study.
title_sort association between body roundness index and handgrip strength and muscle quality index a cross sectional study
url https://doi.org/10.1371/journal.pone.0322928
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