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Validity of A-Mode Ultrasound for Estimating Body Fat Percentage of Young Adult Athletes: A Multicomponent Model Study.
Medicine & Science in Sports & Exercise ( IF 4.1 ) Pub Date : 2025-01-15 , DOI: 10.1249/mss.0000000000003651
Dale R Wagner,Elizabeth A Cafferty,Sara A Harper,Michael N Vakula
Medicine & Science in Sports & Exercise ( IF 4.1 ) Pub Date : 2025-01-15 , DOI: 10.1249/mss.0000000000003651
Dale R Wagner,Elizabeth A Cafferty,Sara A Harper,Michael N Vakula
PURPOSE
This study compared %BFUS to %BF4C in young adult athletes.
METHODS
University club sport athletes (86 women, 138 men) from a variety of teams participated. ADP, DXA, and bioimpedance spectroscopy were used to measure body volume, bone mineral content, and total body water, respectively, for the 4C model. Ultrasound measurements were taken at three sites to estimate %BFUS. Comparisons between %BFUS and %BF4C were evaluated with Pearson correlation, paired t-test, linear regression, equivalence testing, and plots of individual errors.
RESULTS
For the combined sample of men and women (N = 224), the two methods were highly correlated (r = 0.93) with a constant error (CE) of 0.8% BF (P < .001) and standard error of estimate (SEE) of 3.0% BF. The 90% confidence intervals of the mean difference (0.47 to 1.17) were well within the ±2% BF limits for equivalence testing, and no bias was evident from the error plot. However, equivalence testing failed to remain inside the ±2% BF range for women, and the prediction errors for women (CE = 1.9% BF, P < .001, SEE = 3.2% BF) were larger than for men (CE = 0.1% BF, P = .597, SEE = 2.8% BF).
CONCLUSIONS
Overall, the %BFUS errors were low, suggesting that A-mode ultrasound is a valid field measure of %BF for young adult athletes. Accuracy is better for men than women.
中文翻译:
A 型超声估计年轻成年运动员体脂百分比的有效性:一项多成分模型研究。
目的 本研究比较了年轻成年运动员的 %BFUS 和 %BF4C。方法 来自各个团队的大学俱乐部运动运动员(86 名女性,138 名男性)参加了比赛。ADP 、 DXA 和生物阻抗谱分别用于测量 4C 模型的体容量、骨矿物质含量和体内总水分。在 3 个部位进行超声测量以估计 %BFUS。使用 Pearson 相关、配对 t 检验、线性回归、等价检验和单个误差图评估 %BFUS 和 %BF4C 之间的比较。结果 对于男性和女性的组合样本 (N = 224),两种方法高度相关 (r = 0.93),常数误差 (CE) 为 0.8% BF (P < .001),估计标准误差 (SEE) 为 3.0% BF。平均差的 90% 置信区间 (0.47 至 1.17) 完全在等价检验的 ±2% BF 限值内,从误差图中没有明显的偏倚。然而,女性的等价检验未能保持在 ±2% BF 范围内,女性的预测误差 (CE = 1.9% BF,P < .001,SEE = 3.2% BF) 大于男性 (CE = 0.1% BF,P = .597,SEE = 2.8% BF)。结论 总体而言,%BFUS 误差较低,表明 A 型超声是年轻成年运动员 %BF 的有效现场测量。男性比女性更准确。
更新日期:2025-01-15
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
A 型超声估计年轻成年运动员体脂百分比的有效性:一项多成分模型研究。
目的 本研究比较了年轻成年运动员的 %BFUS 和 %BF4C。方法 来自各个团队的大学俱乐部运动运动员(86 名女性,138 名男性)参加了比赛。ADP 、 DXA 和生物阻抗谱分别用于测量 4C 模型的体容量、骨矿物质含量和体内总水分。在 3 个部位进行超声测量以估计 %BFUS。使用 Pearson 相关、配对 t 检验、线性回归、等价检验和单个误差图评估 %BFUS 和 %BF4C 之间的比较。结果 对于男性和女性的组合样本 (N = 224),两种方法高度相关 (r = 0.93),常数误差 (CE) 为 0.8% BF (P < .001),估计标准误差 (SEE) 为 3.0% BF。平均差的 90% 置信区间 (0.47 至 1.17) 完全在等价检验的 ±2% BF 限值内,从误差图中没有明显的偏倚。然而,女性的等价检验未能保持在 ±2% BF 范围内,女性的预测误差 (CE = 1.9% BF,P < .001,SEE = 3.2% BF) 大于男性 (CE = 0.1% BF,P = .597,SEE = 2.8% BF)。结论 总体而言,%BFUS 误差较低,表明 A 型超声是年轻成年运动员 %BF 的有效现场测量。男性比女性更准确。