Predictive accuracy of bioimpedance equations in estimating fat-free mass of Hispanic women
Abstract
This study assessed the predictive accuracy of previously published bioelectrical impedance analysis equations for estimating fat-free mass of young (20-39 yr) Hispanic women (N = 29). The reference method was hydrostatic weighing at residual lung volume. Body density was converted to percent body fat using the Siri equation. Resistance and reactance were measured with a Valhalla bioimpedance analyzer. The bioelectrical impedance analysis equations of Lohman, Rising, Stolarczyk, Segal, Gray, and Van Loan were cross-validated. There were significant correlations between criterion and predicted fat-free mass (r = 0.86-0.95) for all equations. The standard error of estimate for each equation was acceptable; however, the total error for the Stolarczyk (3.2 kg) and the Van Loan (4.6 kg) equations exceeded the recommended value (2.8 kg). For all equations, the difference between average criterion and predicted fat-free mass was significant (P < 0.05). However, the mean differences for the Lohman (0.8 kg), Segal (0.8 kg), and Gray (0.9 kg) equations were small. In conclusion, the Segal, Lohman, and Gray equations may have potential for assessing the body composition of healthy, acculturated, Hispanic women.
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“Each participant’s fat-free mass (FFM) and %BF were determined using bioelectrical-impedance analysis (RJL Systems, Milford, CT) as previously described (Broeder, Burrhus, Svanevik, Volpe, & Wilmore, 1997; Stolarczyk et al., 1995).”
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- Authors
- STOLARCZYK, L. M., HEYWARD, V. H., GOODMAN, J. A., GRANT, D. J., KESSLER, K. L., KOCINA, P. S., & WILMERDING, V.
- Affiliations
- University of New Mexico (US)
- Venue
- Medicine & Science in Sports & Exercise
- Published
- 1995-10
- Volume
- 27
- Issue
- 10
- Pages
- 1450???1456
- ISSN
- 0195-9131 (ISSN-L)
- OpenAlex
- W1993714518
- Cited by
- 19
- References
- 0
- Citations by year
- 2023: 1 · 2022: 1 · 2021: 1 · 2020: 1
- FWCI
- 1.06
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Medicine & Science in Sports & Exercise (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Physiology › Body Composition Measurement Techniques
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Obesity, Physical Activity, Diet
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrical and Bioimpedance Tomography
- Keywords
- bioelectrical impedance analysis, fat-free mass, body composition, Hispanic women, prediction accuracy, young women, cross-validation
- MeSH terms
- Acculturation, Adipose Tissue, Adult, Algorithms, Body Composition, Body Height, Body Weight, Female, Forecasting
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