Kim Ho-Jun, Gallagher Dympna, Song Mi-Yeon
Department of Oriental Rehabilitation Medicine, Ilsan International Hospital, Dongguk University, Goyang, Gyeonggi, Republic of Korea.
Am J Chin Med. 2005;33(6):851-8. doi: 10.1142/S0192415X05003454.
Bioelectrical impedance analysis (BIA), a device that analyzes the current conduction differences between the fat and water components is widely used for reasons that include convenience of use, non-invasiveness, safety, and low cost. Dual energy X-ray absorptiometry (DXA) allows for the assessment of total body and regional lean and fat tissues and bone mineral content (BMC). The objective of this study was to compare body composition assessments by BIA and DXA before and after a 6-week herbal diet intervention program in 50 pre-menopausal women [mean +/- SD: age 30.58 +/- 6.15, body mass index (BMI) 31.72 +/- 3.78]. Waist-to-hip ratio (WHR) was measured by BIA and anthropometry. Lean body mass (LBM), body fat (BF), BMC and percent body fat (%BF) were measured by BIA and DXA. Highly significant correlations were observed between BIA and DXA measurements for LBM, BF, BMC and %BF (r = 0.73, 0.93, 0.53, 0.79, respectively) before the intervention. Differences between BIA and DXA measurements were observed in LBM, BF, %BF and BMC before intervention (p < 0.01) where WHR by BIA was significantly higher compared to anthropometry before (p < 0.01) and after the intervention (p < 0.01). BIA underestimated LBM by 1.85 kg and overestimated BF by 2.54 kg compared to DXA before the intervention. Although BIA and DXA showed highly significant correlations for LBM, BF, BMC and %BF before the intervention, they did not produce statistically comparable results in pre-menopausal Korean women and therefore should not be used interchangeably when measuring body composition.
生物电阻抗分析（BIA）是一种分析脂肪和水分成分之间电流传导差异的设备，因其使用方便、无创、安全且成本低等原因而被广泛应用。双能X线吸收法（DXA）可用于评估全身及局部的瘦组织、脂肪组织和骨矿物质含量（BMC）。本研究的目的是比较50名绝经前女性[平均±标准差：年龄30.58±6.15，体重指数（BMI）31.72±3.78]在为期6周的草药饮食干预计划前后，通过BIA和DXA进行的身体成分评估。通过BIA和人体测量法测量腰臀比（WHR）。通过BIA和DXA测量瘦体重（LBM）、体脂（BF）、BMC和体脂百分比（%BF）。干预前，BIA和DXA测量的LBM、BF、BMC和%BF之间存在高度显著的相关性（r分别为0.73、0.93、0.53、0.79）。干预前，BIA和DXA测量的LBM、BF、%BF和BMC存在差异（p<0.01），其中BIA测量的WHR在干预前（p<0.01）和干预后（p<0.01）均显著高于人体测量法。与干预前的DXA相比，BIA低估LBM 1.85 kg，高估BF 2.54 kg。尽管干预前BIA和DXA在LBM、BF、BMC和%BF方面显示出高度显著的相关性，但在绝经前韩国女性中，它们并未产生统计学上可比的结果，因此在测量身体成分时不应互换使用。
