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Background <p>Obesity is an important factor affecting pulmonary function. The Body Roundness Index (BRI) is a new method of assessing body and visceral adiposity, but its association with spirometric parameters in adolescents has not been previously reported.</p> Methods <p>Cross-sectional data were obtained from the 2007 to 2012 National Health and Nutrition Examination Survey (NHANES), with participants having complete data on BRI and spirometric parameters. A generalized linear regression was conducted to explore the independent relationship between BRI and spirometric parameters. Smoothing curve fitting, subgroup analysis, and interaction tests were also performed.</p> Results <p>A negative correlation was observed between BRI and pulmonary function. In the fully adjusted model, an increase of one unit in BRI was associated with an increase of 0.08&#xa0;L in FVC, an increase of 0.04&#xa0;L in FEV1, an increase of 5.17&#xa0;L/min in PEF, and a decrease of 0.62% in FEV1/FVC.</p> Conclusion <p>The results suggest an inverse association between BRI and pulmonary function. However, the clinical significance of this finding warrants further study.</p> Clinical trial number <p>Not applicable.</p>

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Association between the Body Roundness Index and spirometric parameters among U.S. Adolescents from NHANES 2007–2012

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月29日

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  • Weibang Xu,
  • Baoyi Huang,
  • Yiyi Xu,
  • Ganghua Huang

摘要

Background

Obesity is an important factor affecting pulmonary function. The Body Roundness Index (BRI) is a new method of assessing body and visceral adiposity, but its association with spirometric parameters in adolescents has not been previously reported.

Methods

Cross-sectional data were obtained from the 2007 to 2012 National Health and Nutrition Examination Survey (NHANES), with participants having complete data on BRI and spirometric parameters. A generalized linear regression was conducted to explore the independent relationship between BRI and spirometric parameters. Smoothing curve fitting, subgroup analysis, and interaction tests were also performed.

Results

A negative correlation was observed between BRI and pulmonary function. In the fully adjusted model, an increase of one unit in BRI was associated with an increase of 0.08 L in FVC, an increase of 0.04 L in FEV1, an increase of 5.17 L/min in PEF, and a decrease of 0.62% in FEV1/FVC.

Conclusion

The results suggest an inverse association between BRI and pulmonary function. However, the clinical significance of this finding warrants further study.

Clinical trial number

Not applicable.