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Bioelectrical impedance analysis v. dual-energy X-ray absorptiometry for assessing segmental body composition in healthy adults
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DOI：10.1017/S0007114526106412.png)
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Abstract
En 中文
This study aimed to evaluate the agreement between three body composition devices and dual-energy X-ray absorptiometry (DXA) in assessing segmental body composition among healthy Iranian adults. This comparative study recruited 62 healthy adults (33 men and 29 women) from Tehran; Iran; using a convenience sampling approach. Socio-demographic data were collected; and segmental body composition was assessed using several devices; including the InBody 770; Anea bioelectrical impedance analysis (BIA); Tanita BC-418 and DXA. Agreement between DXA and the BIA devices was evaluated using Lin’s concordance correlation coefficient (CCC). Additionally; Bland–Altman plots and mean percentage error were applied to assess the consistency between the two methods. The Anea; InBody 770 and Tanita BC-418 devices showed strong correlation with DXA for all segmental measurements (r ≥ 0·74; P < 0·05). Moderate agreement (CCC: 0·90 ≤ CCC < 0·95) with the DXA method was found for some segments using the Anea (trunk fat mass; arms fat-free mass; legs fat-free mass and trunk fat-free mass) and the InBody 770 (trunk lean body mass and trunk fat mass) devices. The estimation of legs fat mass was the least accurate across all BIA devices. Furthermore; subgroup analyses showed that the BIA devices provided more precise results in men and in individuals with a BMI < 25·00 kg/m2. The Anea BIA and InBody 770 devices show relatively acceptable validity for segmental body composition assessment. More research is needed to confirm these findings.
Keywords:
Fat-free mass
Lean body mass
Fat mass
Body composition
Dual-energy X-ray absorptiometry
Arms Fat Mass
Arms Fat-Free Mass
Arms Lean Body Mass
Bioelectrical Impedance Analysis
Concordance Correlation Coefficient
Dual-energy X-ray Absorptiometry
Fat Mass
Fat-Free Mass
intraclass correlation coefficient
Lean Body Mass
Legs Fat Mass
Legs Fat-Free Mass
Legs Lean Body Mass
Trunk Fat Mass
Trunk Fat-Free Mass
Trunk Lean Body Mass
Multi-Frequency
Interquartile range
Resting Energy Expenditure
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