Validation of skinfold equations and alternative methods for the determination of fat-free mass in young athletes

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dc.creatorJagim, Andrew R.
dc.creatorTinsley, Grant M. (TTU)
dc.creatorMerfeld, Brandon R.
dc.creatorAmbrosius, Abby
dc.creatorKhurelbaatar, Chinguun
dc.creatorDodge, Christopher
dc.creatorCarpenter, Makenna
dc.creatorLuedke, Joel
dc.creatorErickson, Jacob L.
dc.creatorFields, Jennifer B.
dc.creatorJones, Margaret T.
dc.date.accessioned2023-09-11T21:07:13Z
dc.date.available2023-09-11T21:07:13Z
dc.date.issued2023
dc.description2023 Jagim, Tinsley, Merfeld, Ambrosius, Khurelbaatar, Dodge, Carpenter, Luedke, Erickson, Fields and Jones. cc-by
dc.description.abstractIntoduction: To cross-validate skinfold (SKF) equations, impedance devices, and air-displacement plethysmography (ADP) for the determination of fat-free mass (FFM). Methods: Male and female youth athletes were evaluated (n = 91[mean ± SD] age: 18.19 ± 2.37 year; height: 172.1 ± 9.8 cm; body mass: 68.9 ± 14.5 kg; BMI: 23.15 ± 3.2 kg m−2; body fat: 19.59 ± 6.9%) using underwater weighing (UWW), ADP, and SKF assessments. A 3-compartment (3C) model (i.e., UWW and total body water) served as the criterion, and alternate body density (Db) estimates from ADP and multiple SKF equations were obtained. Validity metrics were examined to establish each method's performance. Bioelectrical impedance analysis (BIA), bioimpedance spectroscopy (BIS), and the SKF equations of Devrim-Lanpir, Durnin and Womersley, Jackson and Pollock (7-site), Katch, Loftin, Lohman, Slaughter, and Thorland differed from criterion. Results: For females, Pearson's correlations between the 3C model and alternate methods ranged from 0.51 to 0.92, the Lin's concordance correlation coefficient (CCC) ranged from 0.41 to 0.89, with standard error of the estimate (SEE) ranges of 1.9–4.6 kg. For SKF, the Evans 7-site and J&P 3 Site equations performed best with CCC and SEE values of 0.82, 2.01 kg and 0.78, 2.21 kg, respectively. For males, Pearson's correlations between the 3C model and alternate methods ranged from 0.50 to 0.95, CCC ranges of 0.46–0.94, and SEE ranges of 3.3–7.6 kg. For SKF, the Evans 3-site equation performed best with a mean difference of 1.8 (3.56) kg and a CCC of 0.93. Discussion: The Evans 7-site and 3-site SKF equations performed best for female and male athletes, respectively. The field 3C model can provide an alternative measure of FFM when necessary.
dc.identifier.citationJagim, A.R., Tinsley, G.M., Merfeld, B.R., Ambrosius, A., Khurelbaatar, C., Dodge, C., Carpenter, M., Luedke, J., Erickson, J.L., Fields, J.B., & Jones, M.T.. 2023. Validation of skinfold equations and alternative methods for the determination of fat-free mass in young athletes. Frontiers in Sports and Active Living, 5. https://doi.org/10.3389/fspor.2023.1240252
dc.identifier.urihttps://doi.org/10.3389/fspor.2023.1240252
dc.identifier.urihttps://hdl.handle.net/2346/96003
dc.language.isoeng
dc.subjectbody composition
dc.subjectfat-free mass
dc.subjectminimum wrestling weight
dc.subjectskinfold
dc.subjectyouth athlete
dc.titleValidation of skinfold equations and alternative methods for the determination of fat-free mass in young athletes
dc.typeArticle

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