Evaluation of multifrequency bioelectrical impedance analysis in assessing body composition of wrestlers

Medicine and Science in Sports and Exercise
Alan C Utter, Pamela G Lambeth

Abstract

To evaluate the accuracy of multifrequency bioelectrical impedance analysis (MFBIA) in assessing fat-free mass (FFM) in comparison with hydrostatic weighing (HW) and skinfolds (SK) in high school wrestlers in a hydrated state. Body composition was determined by MFBIA, HW, and three-site SK in 72 high school wrestlers (mean +/- SD; age = 15.3 +/- 1.4 yr, height = 1.71 +/- 0.08 m, body mass = 67.3 +/- 13.4 kg). Hydration state was quantified by evaluating urine specific gravity. There were no significant differences for estimated FFM between MFBIA (57.2 +/- 9.5 kg) and HW (57.0 +/- 10.1 kg) or SK (56.4 +/- 8.8 kg). The SEE for FFM with HW as the reference method were 2.73 kg for MFBIA and 2.66 kg for SK. Correlations were found for FFM between HW and MFBIA (r = 0.96, P < 0.001) and between HW and SK (r = 0.97, P < 0.001). A systematic bias was found for MFBIA because the difference between MFBIA and HW correlated with the FFM average of the two methods (r = -0.22, P < 0.001). A bias was also seen between SK and HW and correlated with the FFM average (r = -0.47, P < 0.001). This study demonstrates that MFBIA provides similar estimates of FFM when compared with HW in a heterogeneous high school wrestling population during a hydrate...Continue Reading

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Citations

Jan 12, 2011·European Journal of Applied Physiology·Jesús García-PallarésMikel Izquierdo
Mar 10, 2016·Journal of the International Society of Sports Nutrition·J G PallarésR Mora-Rodríguez
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Dec 31, 2011·Journal of Strength and Conditioning Research·Jesús García PallarésMikel Izquierdo
Apr 4, 2021·International Journal of Environmental Research and Public Health·Damian WiśniewskiKrzysztof Durkalec-Michalski

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