期刊
MEASUREMENT IN PHYSICAL EDUCATION AND EXERCISE SCIENCE
卷 22, 期 3, 页码 231-238出版社
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/1091367X.2017.1422129
关键词
Percent body fat; agreement; reliability; dual energy X-ray absorptiometry; air displacement plethysmography; bioimpedance; adiposity
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.
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