Body Composition Assessment: A Comparison of the Bod Pod, InBody 770, and DXA

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Jose Antonio
Madaline Kenyon
Anya Ellerbroek
Cassandra Carson
Denvyr Tyler-Palmer
Victoria Burgess
Gerseli Angeli
Tobin Silver
Lia Jiannine
Corey Peacock


Fat mass, Fat-free mass, Lean body mass


Introduction: There are several laboratory methods for assessing body composition. The purpose of this study was to compare three body composition methods in a cohort of exercise-trained men and women: air displacement plethysmography (Bod Pod®), dual energy x-ray absorptiometry (DXA) and a multi-frequency bioelectrical impedance (MF-BIA) device (InBody® 770). Methods: Subjects (n=155; 42 male, 113 female) came to the laboratory for body composition assessment (i.e., percent body fat, fat-free mass and fat mass). Results: There were no statistically significant differences between the Bod Pod and InBody for any measure of body composition. However, the Bod Pod and Inbody 770 overestimated fat-free mass and underestimated fat mass and percent body fat in comparison to the DXA.
Conclusions: In general, the Bod Pod and InBody 770 underestimate percent body fat versus the DXA. Thus, one must be cautious in the interpretation of body composition data depending on the method of assessment. It should be noted that all three methods are acceptable for body composition analysis.

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1. Collins MA, Millard-Stafford ML, Sparling PB, et al. Evaluation of the BOD POD for assessing body fat in collegiate football players. Medicine and science in sports and exercise. 1999;31(9):1350-1356.
2. Delisle-Houde P, Reid RER, Insogna JA, et al. Comparing DXA and Air Displacement Plethysmography to Assess Body Composition of Male Collegiate Hockey Players. Journal of strength and conditioning research / National Strength & Conditioning Association. 2019;33(2):474-478.
3. Ferri-Morales A, Nascimento-Ferreira MV, Vlachopoulos D, et al. Agreement Between Standard Body Composition Methods to Estimate Percentage of Body Fat in Young Male Athletes. Pediatric exercise science. 2018;30(3):402-410.
4. Lockner DW, Heyward VH, Baumgartner RN, Jenkins KA. Comparison of air-displacement plethysmography, hydrodensitometry, and dual X-ray absorptiometry for assessing body composition of children 10 to 18 years of age. Annals of the New York Academy of Sciences. 2000;904:72-78.
5. Aragon AA, Schoenfeld BJ, Wildman R, et al. International society of sports nutrition position stand: diets and body composition. Journal of the International Society of Sports Nutrition. 2017;14:16.
6. Achamrah N, Colange G, Delay J, et al. Comparison of body composition assessment by DXA and BIA according to the body mass index: A retrospective study on 3655 measures. PloS one. 2018;13(7):e0200465.
7. Demura S, Sato S, Kitabayashi T. Percentage of total body fat as estimated by three automatic bioelectrical impedance analyzers. Journal of physiological anthropology and applied human science. 2004;23(3):93-99.
8. McLester CN, Nickerson BS, Kliszczewicz BM, McLester JR. Reliability and Agreement of Various InBody Body Composition Analyzers as Compared to Dual-Energy X-Ray Absorptiometry in Healthy Men and Women. Journal of clinical densitometry : the official journal of the International Society for Clinical Densitometry. 2018.
9. Wingo BC, Barry VG, Ellis AC, Gower BA. Comparison of segmental body composition estimated by bioelectrical impedance analysis and dual-energy X-ray absorptiometry. Clin Nutr ESPEN. 2018;28:141-147.
10. Schoenfeld BJ, Nickerson BS, Wilborn CD, et al. Comparison of Multifrequency Bioelectrical Impedance vs. Dual-Energy X-ray Absorptiometry for Assessing Body Composition Changes After Participation in a 10-Week Resistance Training Program. Journal of strength and conditioning research / National Strength & Conditioning Association. 2018.
11. Gonzalez-Ruiz K, Medrano M, Correa-Bautista JE, et al. Comparison of Bioelectrical Impedance Analysis, Slaughter Skinfold-Thickness Equations, and Dual-Energy X-ray Absorptiometry for Estimating Body Fat Percentage in Colombian Children and Adolescents with Excess of Adiposity. Nutrients. 2018;10(8).
12. Day K, Kwok A, Evans A, et al. Comparison of a Bioelectrical Impedance Device against the Reference Method Dual Energy X-Ray Absorptiometry and Anthropometry for the Evaluation of Body Composition in Adults. Nutrients. 2018;10(10).
13. Weyers AM, Mazzetti SA, Love DM, Gomez AL, Kraemer WJ, Volek JS. Comparison of methods for assessing body composition changes during weight loss. Medicine and science in sports and exercise. 2002;34(3):497-502.

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