title: Validity of a portable computer-based ultrasound system for estimating adipose tissue in female gymnasts.
abstract: The aim of this investigation was to determine the validity of a portable ultrasound instrument for estimating adipose tissue (AT%) compared to dual-energy X-ray absorptiometry (DXA) in female collegiate gymnasts. Participants had their measurements taken in the following order: urine-specific gravity, body mass, height, ultrasound determined AT% (1-site and 3-site) and DXA determined AT%. The current pilot study found significant differences between estimates of AT% (P < 0·001). Pearson's correlations between DXA and 1-site and 3-site estimates were r = 0·786 and r = 0·753, respectively. The standard error of the estimate between DXA and 1-site and 3-site estimates was 3·6% and 3·9%, respectively. However, the average deviation of individual scores from the line of identity was 6·7% for the 1-site and 4·9% for the 3-site, when compared with the DXA estimate. The results of this preliminary study found that the portable ultrasound was not a valid estimate of AT% when compared with the DXA estimate in female collegiate gymnasts.
authors.affiliation: Department of Health and Exercise Science, University of Oklahoma, Norman, OK, USA.
authors.forename: Jeremy P
authors.initials: JP
authors.lastname: Loenneke
authors.forename: Jeremy T
authors.initials: JT
authors.lastname: Barnes
authors.forename: Jason D
authors.initials: JD
authors.lastname: Wagganer
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Pujol
mesh_terms: D015502:Absorptiometry, Photon; D000273:Adipose Tissue / Q000000981:diagnostic imaging*; D050154:Adiposity; D004867:Equipment Design; D005260:Female; D006173:Gymnastics; D006801:Humans; D010865:Pilot Projects; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D014463:Ultrasonography / Q000295:instrumentation*; D055815:Young Adult
keywords: adipose tissue; athlete; body fat; composition; fitness; imaging; skinfolds; ultrasound