A comparison of the agreement,internal consistency,and 2-day test stability of the InBody 720, GE iDXA,and BOD POD® gold standard for assessing body composition |
| |
| Authors: | Bruce W Bailey Gabrielle LeCheminant Timothy Hope Mathew Bell Larry A Tucker |
| |
| Institution: | Department of Exercise Sciences, Brigham Young University, Provo, UT |
| |
| Abstract: | The study compared the agreement, internal consistency, and measurement stability of the GE iDXA, BOD POD, and InBody 720. Body composition of 43 men and 37 women (31.4 ± 10.7 years; 90% Caucasian and 10% other) was assessed in triplicate using each method over two different days. Mean percent body fat (% BF) of the participants was different for all three machines (27.6 ± 10.0% GE iDXA)] 25.6 ± 10.4% BOD POD], and 21.3 ± 10.6% InBody 720]; p < .05). The coefficient of variation for same day repeated measures was 1.06% (GE iDXA), 3.29% (BOD POD), and 2.97% (InBody 720). The coefficient of variation for 2-day repeated measures was 1.81% (GE iDXA), 4.61% (BOD POD), and 4.24% (InBody 720). The difference between the GE iDXA and BOD POD was within acceptable variability, while the InBody 720 significantly underestimated % BF. The internal consistency was highest for the GE iDXA, followed by the InBody 720, and then the BOD POD. |
| |
| Keywords: | Percent body fat agreement reliability dual energy X-ray absorptiometry air displacement plethysmography bioimpedance adiposity |
|
|
