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dc.contributor.advisorBall, Stephen D. (Stephen Daniel)eng
dc.contributor.authorCompany, Joeeng
dc.date.issued2008eng
dc.date.submitted2008 Falleng
dc.descriptionThe entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.eng
dc.descriptionTitle from PDF of title page (University of Missouri--Columbia, viewed on September 16, 2009).eng
dc.descriptionThesis advisor: Dr. Steve Ball.eng
dc.descriptionM.A. University of Missouri--Columbia 2008.eng
dc.description.abstractThe primary purpose of this study was to investigate the accuracy of the DF50 BIA device using DXA as the criterion in two groups: endurance athletes and power athletes. The secondary purpose was to develop accurate %BF prediction equations for each group based on BIA data and/or the combination of BIA and anthropometric data. 80 male athletes (40 elite endurance athletes and 40 were power athletes), age 19-48 with BMIs ranging from 18.9 to 37.4 were recruited. Anthropometric measurements were taken. Body composition was assessed by DXA and BIA. An athlete-specific BIA prediction equation was developed by stepwise regression analysis using DXA as the criterion and BIA data and anthropometric measurements as predictor variables. The DF50 BIA significantly overestimated %BF by 6.4 [plus or minus] 0.5 in the entire group (p [less than] 0.001) and in both the endurance group (6.1 [plus or minus] 0.6, p [less than] 0.001) and the power group (6.7 [plus or minus] 0.7, p [less than] 0.001). The endurance and power group showed no significant difference in the error of estimation by BIA (p = 0.554), indicating that BIA has the same error in both groups. The final prediction equation incorporated both anthropometric variables as well as BIA variables. The prediction equation produced an adjusted r2 of 0.982 and SEE of 1.98 for the entire group. This equation used BIA measurements and anthropometric measurements, specifically trunk measurements to account for trunk size, a common source of error in BIA equations. Follow-up validation studies are necessary to further validate the equations produced.eng
dc.description.bibrefIncludes bibliographical references.eng
dc.identifier.merlinb71022697eng
dc.identifier.oclc437258933eng
dc.identifier.urihttps://doi.org/10.32469/10355/5697eng
dc.identifier.urihttps://hdl.handle.net/10355/5697
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcommunityUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.rightsOpenAccess.eng
dc.rights.licenseThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License.
dc.subjectDual energy x-ray absorptiometry.eng
dc.subjectDual energy x-ray absorptiometryeng
dc.subject.lcshExercise -- Physiological aspectseng
dc.subject.lcshImpedance, Bioelectric -- Analysiseng
dc.subject.lcshBody compositioneng
dc.subject.lcshAthletic ability -- Testingeng
dc.subject.lcshAthleteseng
dc.titleBody composition comparison : bioelectric impedance analysis with DXA in adult athleteseng
dc.typeThesiseng
thesis.degree.disciplineExercise physiology (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.A.eng


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