Validation Study of Multi-Frequency Bioelectrical Impedance with Dual-Energy X-ray Absorptiometry Among Obese Patients

Abstract

BIA proved to be a safe alternative for assessing BC in clinically severely obese patients and thus provides a more accessible evaluation tool for this population. But, consideration should be given to the formula added to the BIA measurement, adjusting the values to differences observed in order to reduce errors when compared with the DXA measurements.

Gamifying Accelerometer Use Increases Physical Activity Levels of Sedentary Office Workers

“…Height was measured to the nearest 0.5 cm using a professional‐grade height rod (Seca 769, Hanover, MD). Weight, fat mass, and lean mass were measured to the nearest 0.1 kg using a multifrequency bioelectrical impedance analyzer (InBody 720, BioSpace Inc, Cerritos, CA), which has demonstrated excellent reliability (coefficient of variation=1.8%)30 and strong criterion validity when compared to dual‐energy x‐ray absorptiometry among obese adults (intraclass correlation=0.83 for fat mass; intraclass correlation=0.90 for fat‐free mass)31 and healthy adults ( r =0.80–0.91 for body composition) 30. Participants completed an online questionnaire that assessed general demographics (eg, age, sex, ethnicity, education, race, income, and marital status), and occupation category; Table 1).…”

Total Worker Health Intervention Increases Activity of Sedentary Workers

“…Height was measured to the nearest 0.5 cm using a professional-grade height rod (Seca 769, Hanover, MD). Weight, fat mass, lean mass, and body composition were measured using a multifrequency bioelectrical impedance analyzer (InBody 720, BioSpace Inc., Cerritos, CA), which has demonstrated excellent reliability (CV¼1.8%) 32 and strong criterion validity when compared to dual-energy x-ray absorptiometry among obese adults (intraclass correlation coefficient [ICC]¼0.83 for fat mass; ICC¼0.90 for fat-free mass) 33 and healthy adults (r ¼0.80 to 0.91 for body composition). 32 Waist circumference was measured in duplicate with a standard Gulick measuring tape according to standard procedures.…”

Disparate Body Composition Outcomes for Underwater Weighing, Dual-Energy X-Ray Absorptiometry, and Two Bioelectrical Impedance Devices in Overweight Young Adults

“…with the latter technique found to produce significantly lower determinations of %BF in comparison to DXA [44]. Similarly, one recent study reported strong agreement between MF-BIA and DXA estimates of body composition in obese clinical patients [45], while another reported that SF-BIA tended to underestimate %BF compared to DXA [46]. Importantly, the latter project reported that the magnitude of SF-BIA disagreement with DXA increased in proportion to increasing % BF, with the bias significantly elevated for females [46].…”