使用BOD-POD通过空气置换体积描记法（ADP）以及利用红外光谱法（IRS-DOD）的氧化氘稀释法对墨西哥成年人的身体成分进行研究。

Body composition in Mexican adults by air displacement plethysmography (ADP) with the BOD-POD and deuterium oxide dilution using infrared spectroscopy (IRS-DOD).

作者信息

Macías Nayeli, Calderón de la Barca Ana María, Bolaños Adriana V, Alemán Heliodoro, Esparza Julián, Valencia Mauro E

机构信息

Centro de Investigación en Alimentación y Desarrollo, Hermosillo, Sonora, México.

出版信息

Food Nutr Bull. 2002 Sep;23(3 Suppl):99-102.

PMID:12362823

Abstract

Thirty four subjects (13 men and 21 women), 24 to 70 years old from northern Mexico, were measured for body density by air displacement plethysmography (ADP) with the BOD-POD, and for total body water by deuterium oxide dilution and infrared spectroscopy (IRS-DOD). Subjects were given a 30 g dose of deuterium oxide. Saliva samples were filtered, sublimated, and deuterium was measured using a Miran 1 FF, IRS. Linear regression of the fat mass (FM) derived from both methods showed that the intercept (0.071) was not different from zero (p = .96) and the slope was 0.96 (p < .0001) demonstrating the techniques to be equivalent. Further, mean FM was 26.7 +/- 12.4 and 25.6 +/- 12.4 kg, for IRS-DOD and ADP techniques, respectively (p = .08). Precision analysis by the model R2 showed that 92.3% of the variability was explained (SEM = 3.4 kg). Bland-Altman analysis showed no significant bias (r = 0.017; p = .93). Mean difference between methods was -1.08 (CI: -2.3 to + 0.13) kg FM.

摘要

来自墨西哥北部的34名受试者（13名男性和21名女性），年龄在24至70岁之间，使用BOD-POD通过空气置换体积描记法（ADP）测量身体密度，并通过氧化氘稀释和红外光谱法（IRS-DOD）测量全身水含量。给受试者服用30克氧化氘剂量。唾液样本经过过滤、升华处理，然后使用Miran 1 FF红外光谱仪测量其中的氘含量。对两种方法得出的脂肪量（FM）进行线性回归分析，结果显示截距（0.071）与零无差异（p = 0.96），斜率为0.96（p < 0.0001），表明这两种技术等效。此外，IRS-DOD和ADP技术测得的平均FM分别为26.7±12.4千克和25.6±12.4千克（p = 0.08）。通过R2模型进行的精密度分析表明，92.3%的变异性得到了解释（标准误 = 3.4千克）。Bland-Altman分析显示无显著偏差（r = 0.017；p = 0.93）。两种方法之间的平均差异为-1.08（置信区间：-2.3至+0.13）千克FM。