Cross-Validation of Field-Based Assessments of Body Composition for Individuals with Down Syndrome

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Phillip C. Usera Oregon State University

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John T. Foley Oregon State University

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Joonkoo Yun Oregon State University

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The purpose of this study was to cross-validate skinfold and anthropometric measurements for individuals with Down syndrome (DS). Estimated body fat of 14 individuals with DS and 13 individuals without DS was compared between criterion measurement (BOP POD®) and three prediction equations. Correlations between criterion and field-based tests for non-DS group and DS groups ranged from .81 – .94 and .11 – .54, respectively. Root-Mean-Squared-Error was employed to examine the amount of error on the field-based measurements. A MANOVA indicated significant differences in accuracy between groups for Jackson’s equation and Lohman’s equation. Based on the results, efforts should now be directed toward developing new equations that can assess the body composition of individuals with DS in a clinically feasible way.

The authors are with the Department of Exercise and Sport Science at Oregon State University in Corvallis, OR 97331. E-mail: jk.yun@orst.edu.

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