Muntean Paul, Neagu Monica, Amaricai Elena, Haragus Horia G, Onofrei Roxana Ramona, Neagu Adrian
Department of Functional Sciences, Victor Babes University of Medicine and Pharmacy Timisoara, 300041 Timisoara, Romania.
Center for Modeling Biological Systems and Data Analysis, Victor Babes University of Medicine and Pharmacy Timisoara, 300041 Timisoara, Romania.
Diagnostics (Basel). 2023 Feb 12;13(4):690. doi: 10.3390/diagnostics13040690.
For elite athletes, monitoring body composition is important for maximizing performance without health risks. Amplitude (A)-mode ultrasound (AUS) has attracted increasing attention as an alternative to skinfold thickness measurements commonly used for assessing the amount of body fat in athletes. AUS accuracy and precision, however, depend on the formula used to predict body fat percentage (%BF) from subcutaneous fat layer thicknesses. Therefore, this study evaluates the accuracy of the 1-point biceps (B1), 9-sites Parrillo, 3-sites Jackson and Pollock (JP3), and 7-sites Jackson and Pollock (JP7) formulas. Relying on the previous validation of the JP3 formula in college-aged male athletes, we took AUS measurements in 54 professional soccer players (aged 22.9 ± 3.83 y, mean ± SD) and compared the results given by different formulas. The Kruskal-Wallis test indicated significant differences ( < 10), and Conover's post hoc test revealed that the JP3 and JP7 data come from the same distribution, whereas the data given by B1 and P9 differ from all the others. Lin's concordance correlation coefficients for B1 vs. JP7, P9 vs. JP7, and JP3 vs. JP7 were 0.464, 0.341, and 0.909, respectively. The Bland-Altman analysis indicated mean differences of -0.5 %BF between JP3 and JP7, 4.7 %BF between P9 and JP7, and 3.1 %BF between B1 and JP7. This study suggests that JP7 and JP3 are equally valid, whereas P9 and B1 overestimate %BF in athletes.
对于精英运动员来说，监测身体成分对于在不影响健康的前提下最大化运动表现至关重要。A 型超声（AUS）作为一种替代方法，越来越受到关注，它可用于替代通常用于评估运动员体脂量的皮褶厚度测量法。然而，AUS 的准确性和精密度取决于用于从皮下脂肪层厚度预测体脂百分比（%BF）的公式。因此，本研究评估了单部位肱二头肌（B1）、九点 Parrillo、三点 Jackson 和 Pollock（JP3）以及七点 Jackson 和 Pollock（JP7）公式的准确性。基于之前对 JP3 公式在大学年龄男性运动员中的验证，我们对 54 名职业足球运动员（年龄 22.9 ± 3.83 岁，均值 ± 标准差）进行了 AUS 测量，并比较了不同公式给出的结果。Kruskal-Wallis 检验表明存在显著差异（< 10），Conover 事后检验显示 JP3 和 JP7 数据来自相同分布，而 B1 和 P9 给出的数据与其他所有数据不同。B1 与 JP7、P9 与 JP7、JP3 与 JP7 的 Lin 一致性相关系数分别为 0.464、0.341 和 0.909。Bland-Altman 分析表明，JP3 和 JP7 之间的平均差异为 -0.5 %BF，P9 和 JP7 之间为 4.7 %BF，B1 和 JP7 之间为 3.1 %BF。本研究表明，JP7 和 JP3 同样有效，而 P9 和 B1 高估了运动员的 %BF。
