Agreement Between Standard Body Composition Methods to Estimate Percentage of Body Fat in Young Male Athletes

Author(s)

Ferri-Morales, Asuncion ^{[1, 2]} ; Vinicius Nascimento-Ferreira, Marcus ^{[3, 4]} ; Vlachopoulos, Dimitris ^[5] ; Ubago-Guisado, Esther ^{[5, 6]} ; Torres-Costoso, Ana ^{[1, 2]} ; De Moraes, Augusto Cesar F. ^{[3, 4, 7]} ; Barker, Alan R. ^[5] ; Moreno, Luis A. ^{[8, 9]} ; Martinez-Vizcaino, Vicente ^{[4, 10]} ; Gracia-Marco, Luis ^{[11, 3, 5]}

Affiliation:Show less -

^[1] Univ Castilla La Mancha, Sch Nursing & Physiotherapy, Toledo - Spain

^[2] Univ Castilla La Mancha, Hlth & Social Res Ctr, Cuenca - Spain

^[3] Univ Zaragoza, Growth Exercise Nutr & Dev GENUD Res Grp, Zaragoza - Spain

^[4] Univ Sao Paulo, Sch Med, Youth Child & Cardiovasc Risk & Environm YCARE Re, Sao Paulo - Brazil

^[5] Univ Exeter, Childrens Hlth & Exercise Res Ctr, Sport & Hlth Sci, Exeter, Devon - England

^[6] Univ Castilla La Mancha, IGOID Res Grp, Toledo - Spain

^[7] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Epidemiol, Baltimore, MD - USA

^[8] IIS Aragon, IA2, Zaragoza - Spain

^[9] Ctr Invest Biomed Red Fisiopatol Obesidad & Nutr, Zaragoza - Spain

^[10] Univ Autonoma Chile, Fac Ciencias Salud, Talca - Chile

^[11] Univ Granada, Fac Sport Sci, Dept Phys Educ & Sports, PROFITH PROmoting FITness & Hlth Phys Act Res Grp, Granada - Spain

• Document type: Journal article
• Source: PEDIATRIC EXERCISE SCIENCE; v. 30, n. 3, p. 402-410, AUG 2018.
• Web of Science Citations: 8

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. (AU)

• FAPESP's process: 14/13367-2 - Design and implementation of methods to assess behaviors related to energy balance in children/adolescents in a multicenter study: SAYCARE study
• Grantee: Augusto César Ferreira de Moraes
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 15/14319-4 - Energy balance-related behaviors in the SAYCARE study - compared and agreement to objective measurement and self-reported: a validation statistical methods
• Grantee: Augusto César Ferreira de Moraes
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 17/11732-3 - Statistical approach in the validation of energy balance-related behaviors: agreement between theory and practice
• Grantee: Marcus Vinicius Nascimento Ferreira
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 16/18436-8 - Measurement of energy expenditure levels in children and adolescents: validation of methods for studies epidemiologic
• Grantee: Marcus Vinicius Nascimento Ferreira
• Support Opportunities: Scholarships in Brazil - Doctorate