29th Annual Student Research Conference
Comparison of BIA Devices to DXA for Estmating Percent Fat in Football Players
Rebecca C. Millard*, Paige A. Clawson, and Alison Crew
Prof. Jana Arabas and Dr. Jerry Mayhew, Faculty Mentors
Some bioelectric impedance analysis (BIA) devices purport to estimate percent fat in athletes. The purpose of this study was to determine the accuracy of selected BIA devices compared with dual-energy x-ray absorptiometry (DXA) for estimating percent fat in football players. Forty college football players were measured for percent fat using three BIA devices and DXA during off-season training. Results indicated that DXA percent fat (23.5? 8.4%) was significantly higher than all BIA devices. A hand-to-hand (18.4 +/- 5.4%) and two foot-to-foot BIAs (17.6 +/- 6.0 and 19.1 +/- 6.3%) produced estimates that averaged (5.1 +/- 4.2%) lower than DXA. Although there was a higher intraclass correlation coefficient (ICC= 0.949) among the various methods, the hand-to-hand and one foot-to-foot BIA had a high rand-order correlation with DXA (rho>0.82), suggesting an adequate ordering on the team. However, not all BIA devices with athletic setting may provide accurate percent fat estimates in football players.
Keywords: DXA, BIA, %fat, football, college athletes, men, bioelectric impedance analysis, dual-energy x-ray absorptiometry
Topic(s):Exercise Science
Athletic Training
Presentation Type: Poster
Session: 7-10
Location: GEO-SUB
Time: 3:30