Comparison of Dual-Energy X-ray Absorptiometry (DXA) Versus a Multi-Frequency Bioelectrical Impedance (InBody 770) Device for Body Composition Assessment after a 4-Week Hypoenergetic Diet.
Comparison of Dual-Energy X-ray Absorptiometry (DXA) Versus a Multi-Frequency Bioelectrical Impedance (InBody 770) Device for Body Composition Assessment after a 4-Week Hypoenergetic Diet.
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DOI：
10.3390/jfmk4020023
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发表时间：
2019-04-25
影响因子：
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通讯作者：
Peacock, Corey
中科院分区：
文献类型：
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作者：
Antonio, Jose;Kenyon, Madaline;Peacock, Corey
本研究的目的是比较经过运动训练的男性和女性在为期 4 周的治疗期内评估身体成分的两种不同方法（即多频生物电阻抗分析 (MF-BIA) 和双能 X 射线吸收测定法 (DXA)）。受试者被指示减少能量摄入，同时维持相同的运动方案四个星期。通过 MF-BIA 和 DXA 确定前后身体成分评估（即去脂质量、脂肪质量、体脂百分比）。平均而言，受试者的能量摄入量减少了约 18%。与 DXA 相比，MF-BIA 低估了脂肪量和体脂百分比，高估了去脂体重。然而，在评估脂肪量、去脂量或体脂百分比的变化时，MF-BIA 与 DXA 之间没有统计学上的显着差异。总体而言，使用 DXA 与 MF-BIA 的体脂百分比变化分别为 -1.3 ± 0.9 和 -1.4 ± 1.8。我们的数据表明，在四个星期内跟踪身体成分时，对于经过运动训练的男性和女性来说，MF-BIA 可能是 DXA 的可行替代方案。
The purpose of this investigation was to compare two different methods of assessing body composition (i.e., a multi-frequency bioelectrical impedance analysis (MF-BIA) and dual-energy x-ray absorptiometry (DXA)) over a four-week treatment period in exercise-trained men and women. Subjects were instructed to reduce their energy intake while maintaining the same exercise regimen for a period of four weeks. Pre and post assessments for body composition (i.e., fat-free mass, fat mass, percent body fat) were determined via the MF-BIA and DXA. On average, subjects reduced their energy intake by ~18 percent. The MF-BIA underestimated fat mass and percentage body fat and overestimated fat-free mass in comparison to the DXA. However, when assessing the change in fat mass, fat-free mass or percent body fat, there were no statistically significant differences between the MF-BIA vs. DXA. Overall, the change in percent body fat using the DXA vs. the MF-BIA was -1.3 ± 0.9 and -1.4 ± 1.8, respectively. Our data suggest that when tracking body composition over a period of four weeks, the MF-BIA may be a viable alternative to the DXA in exercise-trained men and women.