Estimating body fat in NCAA Division I female athletes: a five-compartment model validation of laboratory methods
Estimating body fat in NCAA Division I female athletes: a five-compartment model validation of laboratory methods
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DOI：
10.1007/s00421-008-0881-9
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发表时间：
2009-01-01
影响因子：
3
通讯作者：
Stout, Jeffrey R.
中科院分区：
文献类型：
--
作者：
Moon, Jordan R.;Eckerson, Joan M.;Stout, Jeffrey R.
本研究的目的是确定各种实验室方法的有效性，估计身体脂肪百分比（%脂肪）在NCAA司I大学女运动员（n = 29; 20 +/- A 1年）。通过流体静力学称重（HW）、空气置换体积描记法（ADP）和双能X射线吸收测定法（DXA）评估身体组成，并将使用四室（C）、3C和2C模型得出的%脂肪估计值与标准5C模型进行比较，标准5C模型包括骨矿物质含量、身体体积（BV）、全身水分、Wang-4C和Siri-3C模型与5C模型相比产生几乎相同的值（r > 0.99，总误差（TE）< 0.40%fat）。对于其余实验室方法，恒定误差值（CE）范围为-0.04%脂肪（HW-Siri）至-3.71%脂肪（DXA）; r值范围为0.89（ADP-Siri，ADP-Brozek）至0.93（DXA）;估计值的标准误差范围为1.78%脂肪（DXA）至2.19%脂肪（ADP-Siri，ADP-Brozek）; TE值范围从2.22%脂肪（HW-Brozek）到4.90%脂肪（DXA）。DXA的一致性限（-10.10至2.68%脂肪）最大，具有显著趋势，为-0.43（P < 0.05）。除DXA外，所有方程均得到可接受的TE值（<3.08%脂肪）。然而，使用Brozek方程对%脂肪的个体估计结果表明，从ADP和HW推导BV的2C模型分别高估（5.38，3.65%）和低估（5.19，4.88%）%脂肪。HW和ADP的可接受TE值表明，这些方法对估计大学女运动员的脂肪%是有效的;然而，Wang-4C和Siri-3C模型应用于确定该人群中脂肪%的个体估计值。
The purpose of the present study was to determine the validity of various laboratory methods for estimating percent body fat (%fat) in NCAA Division I college female athletes (n = 29; 20 +/- A 1 year). Body composition was assessed via hydrostatic weighing (HW), air displacement plethysmography (ADP), and dual-energy X-ray absorptiometry (DXA), and estimates of %fat derived using 4-compartment (C), 3C, and 2C models were compared to a criterion 5C model that included bone mineral content, body volume (BV), total body water, and soft tissue mineral. The Wang-4C and the Siri-3C models produced nearly identical values compared to the 5C model (r > 0.99, total error (TE) < 0.40%fat). For the remaining laboratory methods, constant error values (CE) ranged from -0.04%fat (HW-Siri) to -3.71%fat (DXA); r values ranged from 0.89 (ADP-Siri, ADP-Brozek) to 0.93 (DXA); standard error of estimate values ranged from 1.78%fat (DXA) to 2.19%fat (ADP-Siri, ADP-Brozek); and TE values ranged from 2.22%fat (HW-Brozek) to 4.90%fat (DXA). The limits of agreement for DXA (-10.10 to 2.68%fat) were the largest with a significant trend of -0.43 (P < 0.05). With the exception of DXA, all of the equations resulted in acceptable TE values (< 3.08%fat). However, the results for individual estimates of %fat using the Brozek equation indicated that the 2C models that derived BV from ADP and HW overestimated (5.38, 3.65%) and underestimated (5.19, 4.88%) %fat, respectively. The acceptable TE values for both HW and ADP suggest that these methods are valid for estimating %fat in college female athletes; however, the Wang-4C and Siri-3C models should be used to identify individual estimates of %fat in this population.