Abstract

GONZALEZ-AGUERO, Alejandro et al. Inter-methods agreement for the assessment of percentage of body fat between two laboratory methods in male adolescent cyclists. Nutr. Hosp. [online]. 2013, vol.28, n.4, pp.1049-1052. ISSN 1699-5198.  https://dx.doi.org/10.3305/nh.2013.28.4.6502.

Objective: To examine inter-methods agreement between dual energy X-ray absorptiometry (DXA) and air displacement plethysmography (ADP) in male adolescent cyclists for assessing percentage of body fat (PBF). Methods: PBF of 24 male adolescent cyclists was assessed by DXA and ADP. Agreement between ADP and DXA was determined according to a Bland-Altman plot; validity and lack of agreement was assessed by calculating inter-methods difference. The limits of agreement and differences between methods were also calculated by paired t-tests. Heteroscedasticity was also examined. Results: The values obtained by DXA were higher than those obtained by ADP, and the graph presented heteroscedasticity (both p < 0.05; r = 0.74). Conclusion: DXA and ADP methods were not comparable in terms of PBF assessment in our sample of male adolescent cyclists; it needs to be taken into account when evaluating longitudinal changes in this determined population.

Keywords : Body composition; Body fat; Cycling; Adolescents.

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