Background Body composition is an important determinant of general health and, in athletes, is often associated with sports performance and injury risk. The purpose of this investigation was to compare body composition measurements gathered through octopolar multifrequency bioelectrical impedance analysis (O-MF-BIA) and air displacement plethysmography (ADP) in Division I lacrosse athletes. Materials and Methods Fifty-four male lacrosse players underwent body composition testing using O-MF-BIA and ADP during preseason. Measures of percent body fat (PBF), total fat mass (FM), and total fat-free mass (FFM) were collected using both devices. Results There was no statistical difference between O-MF-BIA and ADP for mean values of FFM ( M = 0.365 kg., p = .164), FM ( M = − 0.204 kg., p = .291), and PBF ( M = −0.222%., p = .302). There was a statistically significant, strong correlation between the O-MF-BIA and ADP for FFM ( r (52) = .92, p < .001), FM ( r (52) = .75, p < .001) and PBF ( r (52) = .70, p < .001). Limits of agreement (LOA) between O-MF-BIA and ADP were determined using Bland-Altman plots for FFM (LOA –4.946 to 5.675), FM (LOA –5.499 to 5.092), and PBF (LOA –6.343 to 5.899). Conclusion Body composition measurements obtained by O-MF-BIA and ADP were similar; however, the wide LOA indicates caution should be used when using the devices interchangeably.
Sawyer et al. (Wed,) studied this question.
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