Performance of bioelectrical impedance analysis compared to dual X-ray absorptiometry (DXA) in Veterans with COPD.
Performance of bioelectrical impedance analysis compared to dual X-ray absorptiometry (DXA) in Veterans with COPD.
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DOI：
10.1038/s41598-022-05887-4
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发表时间：
2022-02-04
影响因子：
4.6
通讯作者：
Wan ES
中科院分区：
文献类型：
--
作者：
Cruz Rivera PN;Goldstein RL;Polak M;Lazzari AA;Moy ML;Wan ES
我们检查了市售手持式生物阻抗 (BIA) 设备相对于双 X 射线吸收测定法 (DXA) 的性能，以评估患有慢性阻塞性肺病 (COPD) 的退伍军人的身体成分差异。使用 DXA 和 BIA (Omron HBF-306C) 在单个时间点测量身体成分。使用 Spearman (ρ) 和 Lin 相关系数 (ρc) 分析 BIA 和 DXA 评估的脂肪百分比、脂肪质量和去脂质量之间的相关性。使用 Bland-Altman 图可视化脂肪量的平均差异。按肥胖状况（BMI < 30 与 ≥ 30）进行亚组分析。在 50 名参与者（96% 男性；平均年龄：69.5±±6.0 岁）中，BIA 评估的脂肪量与 DXA 强相关（ρ = 0.94），并表现出极好的一致性（ρc = 0.95，[95%CI：0.93–0.98]），平均差异为BIA 和 DXA 之间为 2.7 ± 3.2 kg。尽管 BIA 和 DXA 评估的脂肪百分比和去脂质量之间的斯皮尔曼相关性很强（分别为 ρ = 0.8 和 0.91），但一致性值仅为中等（分别为 ρ = 0.67 和 0.74）。相对于非肥胖受试者，肥胖受试者在总脂肪百分比（ρobese = 0.85 与 ρnon-obese = 0.5）和脂肪量（ρobese = 0.96 与 ρnon-obese = 0.84）方面观察到显着更强的相关性。手持式 BIA 设备在脂肪量方面与 DXA 表现出高度一致性，在总脂肪百分比和无脂肪质量方面表现出中等一致性。 ClinicalTrials.gov：NCT02099799。
We examined the performance of a commercially-available handheld bioimpedance (BIA) device relative to dual X-ray absorptiometry (DXA) to assess body composition differences among Veterans with chronic obstructive pulmonary disease (COPD). Body composition was measured using DXA and BIA (Omron HBF-306C) at a single time point. Correlations between BIA- and DXA-assessed percent fat, fat mass, and fat-free mass were analyzed using Spearman (ρ) and Lin Concordance Correlation Coefficients (ρc). Mean differences in fat mass were visualized using Bland–Altman plots. Subgroup analyses by obesity status (BMI < 30 versus ≥ 30) were performed. Among 50 participants (96% male; mean age: 69.5 ± 6.0 years), BIA-assessed fat mass was strongly correlated (ρ = 0.94) and demonstrate excellent concordance (ρc = 0.95, [95%CI: 0.93–0.98]) with DXA, with a mean difference of 2.7 ± 3.2 kg between BIA and DXA. Although Spearman correlations between BIA- and DXA-assessed percent fat and fat-free mass were strong (ρ = 0.8 and 0.91, respectively), concordance values were only moderate (ρc = 0.67 and 0.74, respectively). Significantly stronger correlations were observed for obese relative to non-obese subjects for total percent fat (ρobese = 0.85 versus ρnon-obese = 0.5) and fat mass (ρobese = 0.96 versus ρnon-obese = 0.84). A handheld BIA device demonstrated high concordance with DXA for fat mass and moderate concordance for total percent fat and fat-free mass. ClinicalTrials.gov: NCT02099799.
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