A 2011 study published by Clinical Nutrition compared the accuracy of DSM-BIA (InBody 720) against DXA with 484 middle-aged participants. The study found that the InBody had a 99% correlation to DXA when measuring lean mass in normal and overweight populations. “In conclusion, this study shows DSM-BIA to be a valid tool for the assessment of whole body composition and segmental lean mass measurements in middle-aged population when validated against DEXA
A 2005 cross-validation study published by the European Journal of Clinical Nutrition evaluated the accuracy of eight-polar bioelectrical impedance analysis for the assessment total body water (TBW) and extracellular water (ECW) in severe obesity. The InBody 3.0’s results were compared to results found from the Br dilution method. The study concluded that the InBody offered accurate estimates of TBW and ECW without the need for population-specific formulas or empirical equations.
HIGH ACCURACY AND EASE OF USE AS A FIELD-BASED ASSESSMENT TOOL
A 2004 study published by the Journal of Physiological Anthropology and Applied Human Science compared the accuracy of three BIA devices (Tanita BC-118 [SF-BIA4], Tanita TBF-101 [SF-BIA8], InBody 3.0 [MF-BIA8]) against DXA and hydrostatic weighing. The study concluded that the InBody 3.0 (referred to as MF-BIA8) showed the highest correlation in results to DXA and hydrostatic weighing and showed the least estimation error compared to the other BIA methods (94% correlation with DXA and 81% correlation with hydrostatic weighing).
A study published in 2010 found results from the InBody 520 to be highly correlated with fat-free mass (FFM) measures from hydrostatic weighing (96%). The study also concluded that the InBody does not require a high degree of technical skill, making it easy to use and safe, and also provides simultaneous measures of body mass, body composition, and TBW in a short period of time. “These advantages may make MFBIA attractive to educational institutions that may not have access to trained anthropometrists, HW, ADP, and DXA and to address concerns that have been expressed by coaches, officials, and athletic trainers who question the results of SK testing performed by someone who may not be completely objective or impartial.”
A 2009 cross-validation study published by the European Journal of Clinical Nutrition compared the accuracy of tetra (RJL Systems model 101A) and octopolar (InBody 3.0) bioelectrical impedance analysis against DXA for the assessment of total and appendicular body composition in children. The study concluded that the InBody 3.0 was superior to BIA devices that use only 4 electrodes for the prediction of FFM, that empirical estimations tetrapolar BIA devices used gave biased predictions of FFM, and that InBody was an accurate predictor of segmental body composition.
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