Offseason Body Composition Changes Detected by Dual-Energy X-ray Absorptiometry versus Multifrequency Bioelectrical Impedance Analysis in Collegiate American Football Athletes

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dc.creatorBoykin, Jake R. (TTU)
dc.creatorTinsley, Grant M. (TTU)
dc.creatorHarrison, Christine M.
dc.creatorPrather, Jessica
dc.creatorZaragoza, Javier
dc.creatorTinnin, Matthias
dc.creatorSmith, Shay
dc.creatorWilson, Camden
dc.creatorTaylor, Lem W.
dc.date.accessioned2022-11-30T19:31:51Z
dc.date.available2022-11-30T19:31:51Z
dc.date.issued2021
dc.description© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).en_US
dc.description.abstractTracking changes in body composition may provide key information about the effectiveness of training programs for athletes. This study reports on the agreement between bioelectrical impedance analysis (BIA) and dual-energy X-ray absorptiometry (DXA) for tracking body composition changes during a seven-week offseason training program in 29 NCAA collegiate American football players. Body composition in subjects (mean ± SD; age: 19.7 ± 1.5 y; height: 179.8 ± 6.6 cm; body mass (BM: 96.1 ± 12.6 kg; DXA body fat: 20.9 ± 4.4%) was estimated using BIA (InBody 770) and DXA (Hologic Horizon) before and after the training intervention. Repeated measures ANOVA and post hoc comparisons were performed. Longitudinal agreement between methods was also examined by concordance correlation coefficient (CCC) and Bland–Altman analysis alongside linear regression to identify bias. Significant method by time interactions were observed for BM (DXA: 1.1 ± 2.4 kg; BIA: 1.4 ± 2.5 kg; p < 0.03), arms fat-free mass (FFM) (DXA: 0.4 ± 0.5 kg; BIA: 0.2 ± 0.4 kg; p < 0.03), and legs FFM (DXA: 0.6 ± 1.1 kg; BIA: 0.1 ± 0.6 kg; p < 0.01). Post hoc comparisons indicated that DXA—but not BIA—detected increases in FFM of the arms and legs. Time main effects, but no method by time interactions, were observed for total FFM (DXA: 1.6 ± 1.9 kg; BIA: 1.2 ± 2.1 kg; p = 0.004) and trunk FFM (DXA: 0.7 ± 1.3 kg; BIA: 0.5 ± 1.0 kg; p = 0.02). Changes in total BM (CCC = 0.96), FFM (CCC = 0.49), and fat mass (CCC = 0.50) were significantly correlated between BIA and DXA. DXA and BIA may similarly track increases in whole-body FFM in American collegiate football players; however, BIA may possess less sensitivity in detecting segmental FFM increases, particularly in the appendages.en_US
dc.identifier.citationBoykin JR, Tinsley GM, Harrison CM, Prather J, Zaragoza J, Tinnin M, Smith S, Wilson C, Taylor LW. Offseason Body Composition Changes Detected by Dual-Energy X-ray Absorptiometry versus Multifrequency Bioelectrical Impedance Analysis in Collegiate American Football Athletes. Sports. 2021; 9(8):112. https://doi.org/10.3390/sports9080112en_US
dc.identifier.urihttps://doi.org/10.3390/sports9080112
dc.identifier.urihttps://hdl.handle.net/2346/90371
dc.language.isoengen_US
dc.subjectFat-Free Massen_US
dc.subjectBody Faten_US
dc.subjectFat-Free Mass Indexen_US
dc.subjectBody Fat Percentageen_US
dc.subjectBioelectrical Impedance Analysis (BIA)en_US
dc.subjectDuel-Energy X-Ray Absorptiometry (DXA)en_US
dc.titleOffseason Body Composition Changes Detected by Dual-Energy X-ray Absorptiometry versus Multifrequency Bioelectrical Impedance Analysis in Collegiate American Football Athletesen_US
dc.typeArticleen_US

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