Cited by 276Body Composition Measurement TechniquesObesity, Physical Activity, DietNutrition and Health in Aging

The relationship between BMI and percent body fat, measured by bioelectrical impedance, in a large adult sample is curvilinear and influenced by age and sex

Meeuwsen, S., Horgan, G.W., Elia, M.·2010·Clinical Nutrition

Abstract

Objective The study aimed to establish the effects of age, gender and age-gender interactions on BMI-% fat relationships over a wide range of BMI and age. It also aimed to examine controversies regarding linear or curvilinear BMI-% fat relationships.Methods Body composition was measured using validated bio-impedance equipment (Bodystat) in a large self-selected sample of 23,627 UK adults aged 18-99 (99% ≤70) years, of which 11,582 were males with a mean BMI of 26.3±4.7 (sd) kg/m(2), and 12,044 females, with a mean BMI of 25.7±5.1 kg/m(2). Multiple regression analysis was used.Results BMI progressively increased with age in women and plateaued between 40 and 70 years in men. At a fixed BMI, body fat mass increased with age (1.9 kg/decade), as did % fat (1.1-1.4% per decade). The relationship between BMI and % fat was found to be curvilinear (quadratic) rather than linear, with a weaker association at lower BMI. There was also a small but significant age-gender interaction.Conclusion The association between BMI and % body fat is not strong, particularly in the desirable BMI range, is curvilinear rather than linear, and is affected by age.

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Crossref · 10.1016/j.clnu.2009.12.011

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Authors
Meeuwsen, S., Horgan, G. W., & Elia, M.
Affiliations
Biomathematics and Statistics Scotland (GB)
Corresponding author
Elia, M.
Venue
Clinical Nutrition
Publisher
Elsevier BV
Published
2010-10
Volume
29
Issue
5
Pages
560-566
ISSN
0261-5614 (ISSN-L)
OpenAlex
W2044264137
Cited by
275
References
37
Citations by year
2026: 6 · 2025: 15 · 2024: 21 · 2023: 22 · 2022: 30 · 2021: 14 · 2020: 27 · 2019: 18 · 2018: 15 · 2017: 13 · 2016: 12 · 2015: 20 · 2014: 20 · 2013: 25 · 2012: 8
FWCI
8.88
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical Nutrition (publishedVersion)
  • PubMed (publishedVersion)
  • ePrints Soton (University of Southampton) (submittedVersion)
Funders
Scottish Government
Topics
  • Health Sciences › Medicine › Physiology › Body Composition Measurement Techniques
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Obesity, Physical Activity, Diet
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
Keywords
body mass index, body fat percentage, fat mass, bioimpedance, body composition, curvilinear relationship, age effects, sex differences, age-gender interaction, adults
MeSH terms
Adipose Tissue, Adolescent, Adult, Age Factors, Aged, Aged, 80 and over, Body Composition, Female, Humans, Male, Middle Aged, Regression Analysis, Sex Factors, Thinness, Body Mass Index, Electric Impedance, Young Adult

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