title: Comparison of measured and predicted residual lung volume in determining body composition of collegiate wrestlers.
abstract: This investigation compared percent fat obtained via underwater weighing using measured and predicted residual lung volume (RLV) in euhydrated and hypohydrated collegiate wrestlers (N = 67). RLV was measured using O(2) rebreathing or O(2) dilution and predicted using 3 equations-Equation 1: (0.019 x height [cm]) + (0.0115 x age [years]) - 2.24; Equation 2: (0.017 x age [years]) + (0.06858 x height [in.]) - 3.477; and Equation 3: (0.0275 age [years]) + (0.0189 height [cm]) - 2.6139. Percent fat determined using RLV Equation 2 did not differ from the value obtained using measured RLV in the euhydrated (10.9 +/- 5.1 vs. 11.5 +/- 5.6% fat) or hypohydrated (10.8 +/- 5.1 vs. 12.3 +/- 5.6% fat) trials. All other percent fat values differed (p < 0.05) from the value obtained using measured RLV in euhydrated subjects. The use of RLV Equation 2 may be a practical alternative to measured RLV in determining percent fat in euhydrated and hypohydrated collegiate wrestlers.
authors.affiliation: Center for Exercise and Health-Fitness Research, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA. goss@pitt.edu
authors.forename: Fredric L
authors.initials: FL
authors.lastname: Goss
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Robertson
authors.forename: Pamela D
authors.initials: PD
authors.lastname: Swan
authors.forename: Gregory S
authors.initials: GS
authors.lastname: Harris
authors.forename: Gregory A
authors.initials: GA
authors.lastname: Trone
authors.forename: John J
authors.initials: JJ
authors.lastname: Dube
authors.forename: Alan C
authors.initials: AC
authors.lastname: Utter
mesh_terms: D000273:Adipose Tissue / Q000502:physiology; D000328:Adult; D000704:Analysis of Variance; D001823:Body Composition; D001834:Body Water / Q000502:physiology; D006801:Humans; D011237:Predictive Value of Tests; D012115:Residual Volume; D015431:Weight Loss / Q000502:physiology; D014952:Wrestling / Q000502:physiology*