Jürimäe Toivo, Sudi Karl, Jürimäe Jaak, Payerl Doris, Möller Reinhart, Tafeit Erwin
Chair of Sport Pedagogy, Centre of Behavioural and Health Sciences, University of Tartu, Tartu, Estonia.
Coll Antropol. 2005 Dec;29(2):499-502.
The aims of this study were to validate different subcutaneous adipose tissue layers (SAT-layers) measured by lipometer for body fat percentage (BF%) assessment with dual-energy X-ray absorptiometry (DXA) and to compare the validity of lipometer and bioelectrical impedance analysis (BIA). The subjects were 21 male (18-60 years) and 19 female (23-54 years) healthy Estonian volunteers. SAT-layers were measured by lipometer using 15 standardized SAT-layers. Sum of arms, legs and trunk SAT-layers were calculated and compared with arms, legs and trunk fat percentage measured by DXA. BF% was calculated by BIA using the equations of Lukaski et al. and Chumlea et al. for both genders and the equations of Segal et al. for males and Van Loan and Mayclin for females. BF% measured by DXA was significantly higher than calculated by Lukaski et al. and Chumlea et al. in both genders. The correlation was highest between the BF% measured by DXA and using Segal et al. equation in males (r = 0.94) and Van Loan and Mayclin equation in females (r = 0.84). High relationship was observed between BF% measured by DXA and sum of 15 SAT-layers (r = 0.88 in males and r = 0.91 in females). Stepwise multiple regression analysis indicated that two selected SAT-layers explained 85.9% and 86.7% (R2 x 100) of the total variance in BF% measured by DXA in males and females, respectively: [BF% = 1.308 neck + 0.638 hip + 6.971 (males; SEE = 2.59) and BF% = 1.152 hip + 1.797 calf + 12.347 (females; SEE = 3.46)]. In conclusion, lipometer and BIA give a similar mean estimation of BF% when compared with DXA. However, there is a wide range of variance for the upper and lower limits of agreement between the methods, and the methods are not interchangeable. Lipometer seems to be superior to BIA.
本研究的目的是验证通过脂肪测量仪测量的不同皮下脂肪组织层（SAT层）用于评估体脂百分比（BF%）的有效性，该评估采用双能X线吸收法（DXA），并比较脂肪测量仪和生物电阻抗分析（BIA）的有效性。研究对象为21名年龄在18至60岁之间的爱沙尼亚男性健康志愿者和19名年龄在23至54岁之间的爱沙尼亚女性健康志愿者。使用脂肪测量仪测量15个标准化的SAT层。计算手臂、腿部和躯干SAT层的总和，并与通过DXA测量的手臂、腿部和躯干脂肪百分比进行比较。使用Lukaski等人和Chumlea等人针对男女的公式以及Segal等人针对男性和Van Loan与Mayclin针对女性的公式，通过BIA计算BF%。通过DXA测量的BF%在男女中均显著高于Lukaski等人和Chumlea等人计算得出的结果。在男性中，通过DXA测量的BF%与使用Segal等人公式计算的BF%之间的相关性最高（r = 0.94），在女性中，与Van Loan和Mayclin公式计算的BF%之间的相关性最高（r = 0.84）。观察到通过DXA测量的BF%与15个SAT层的总和之间存在高度相关性（男性r = 0.88，女性r = 0.91）。逐步多元回归分析表明，在男性和女性中，分别选择的两个SAT层解释了通过DXA测量的BF%总方差的85.9%和86.7%（R2×100）：[BF% = 1.308×颈部 + 0.638×臀部 + 6.971（男性；标准误 = 2.59）和BF% = 1.152×臀部 + 1.797×小腿 + 12.347（女性；标准误 = 3.46）]。总之，与DXA相比，脂肪测量仪和BIA对BF%的平均估计相似。然而，这些方法之间一致性的上限和下限存在广泛的差异，且这些方法不可互换。脂肪测量仪似乎优于BIA。
