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Agreement Between Standard Body Composition Methods to Estimate Percentage of Body Fat in Young Male Athletes.
- Source :
- Pediatric Exercise Science; Aug2018, Vol. 30 Issue 3, p402-410, 9p, 2 Charts, 2 Graphs
- Publication Year :
- 2018
-
Abstract
- Purpose: To examine the intermethods agreement of dual-energy X-ray absorptiometry (DXA) and foot-to-foot bioelectrical impedance analysis (BIA) to assess the percentage of body fat (%BF) in young male athletes using air-displacement plethysmography (ADP) as the reference method. Methods: Standard measurement protocols were carried out in 104 athletes (40 swimmers, 37 footballers, and 27 cyclists, aged 12-14 y). Results: Age-adjusted %BF ADP and %BF BIA were significantly higher in swimmers than footballers. ADP correlates better with DXA than with BIA (r = .84 vs r = .60, P < .001). %BF was lower when measured by DXA and BIA than ADP (P < .001), and the bias was higher when comparing ADP versus BIA than ADP versus DXA. The intraclass correlation coefficients between DXA and ADP showed a good to excellent agreement (r = .67-.79), though it was poor when BIA was compared with ADP (r = .26-.49). The ranges of agreement were wider when comparing BIA with ADP than DXA with ADP. Conclusion: DXA and BIA seem to underestimate %BF in young male athletes compared with ADP. Furthermore, the bias significantly increases with %BF in the BIA measurements. At the individual level, BIA and DXA do not seem to predict %BF precisely compared with ADP in young athletic populations. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08998493
- Volume :
- 30
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Pediatric Exercise Science
- Publication Type :
- Academic Journal
- Accession number :
- 130649001
- Full Text :
- https://doi.org/10.1123/pes.2017-0171