Body composition interpretation
Abstract
Objective Low and high body mass index (BMI) values have been shown to increase health risks and mortality and result in variations in fat-free mass (FFM) and body fat mass (BF). Currently, there are no published ranges for a fat-free mass index (FFMI; kg/m(2)), a body fat mass index (BFMI; kg/m(2)), and percentage of body fat (%BF). The purpose of this population study was to determine predicted FFMI and BFMI values in subjects with low, normal, overweight, and obese BMI.Methods FFM and BF were determined in 2986 healthy white men and 2649 white women, age 15 to 98 y, by a previously validated 50-kHz bioelectrical impedance analysis equation. FFMI, BFMI, and %BF were calculated.Results FFMI values were 16.7 to 19.8 kg/m(2) for men and 14.6 to 16.8 kg/m(2) for women within the normal BMI ranges. BFMI values were 1.8 to 5.2 kg/m(2) for men and 3.9 to 8.2 kg/m(2) for women within the normal BMI ranges. BFMI values were 8.3 and 11.8 kg/m(2) in men and women, respectively, for obese BMI (>30 kg/m(2)). Normal ranges for %BF were 13.4 to 21.7 and 24.6 to 33.2 for men and women, respectively.Conclusion BMI alone cannot provide information about the respective contribution of FFM or fat mass to body weight. This study presents FFMI and BFMI values that correspond to low, normal, overweight, and obese BMIs. FFMI and BFMI provide information about body compartments, regardless of height.
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Leisure-time activity may preserve functional status and lean body mass and contribute to reduced fat accumulation through increased energy expenditure.
“Leisuretime activity may, through the effects of increased energy expenditure, preserve both functional status and lean body mass, and contribute to reduce fat accumulation 33 .”
From Overweight and obesity in a Swiss city: 10-year trends (2007) · cites this paper as [33]
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Self-citation
- Authors
- Kyle, U. G., Schutz, Y., Dupertuis, Y. M., & Pichard, C.
- Affiliations
- University Hospital of Geneva (CH)
- Corresponding author
- Pichard, Claude
- Venue
- Nutrition
- Publisher
- Elsevier BV
- Published
- 2003-07
- Volume
- 19
- Issue
- 7-8
- Pages
- 597-604
- ISSN
- 0899-9007 (ISSN-L)
- OpenAlex
- W2094954377
- Cited by
- 456
- References
- 39
- Citations by year
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- FWCI
- 4.98
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Nutrition (publishedVersion)
- PubMed (publishedVersion)
- IRIS (submittedVersion)
- SERVAL (Université de Lausanne) (submittedVersion)
- 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 › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
- Keywords
- body composition, fat-free mass index, body fat mass index, body fat percentage, body mass index, obesity, overweight, reference values, sex differences, healthy adults, bioelectrical impedance analysis
- MeSH terms
- Adipose Tissue, Adolescent, Adult, Age Factors, Aged, Aged, 80 and over, Body Composition, Female, Humans, Male, Middle Aged, Predictive Value of Tests, Regression Analysis, Sex Factors, Body Mass Index, Electric Impedance, Muscle, Skeletal
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