Assessing Body Composition of Children and Adolescents Using Dual-Energy X-Ray Absorptiometry, Skinfolds, and Electrical Impedance

To determine the validity and reliability of percent body fat estimates in 177 boys and 154 girls between 12-17 years of age, percent body fat was assessed once using dual-energy X-ray absorptiometry and twice using the sum of two skinfolds and three bioelectrical impedance analysis devices. The ass...

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Bibliographic Details
Published in:Measurement in physical education and exercise science 2011-01, Vol.15 (1), p.2-17
Main Authors: Mooney, Angela, Kelsey, Laurel, Fellingham, Gilbert W., George, James D., Hager, Ron L., Myrer, J. William, Vehrs, Pat R.
Format: Article
Language:English
Subjects:
Adolescents
Body Composition
Body fat
Children & youth
Diagnostic Tests
Evaluation Methods
Intervals
Measurement Equipment
Measures (Individuals)
obesity
OMRON
percent body fat
Physical Education
Physical Fitness
Prediction
Predictions
Radiology
Reliability
TANITA
total body fat
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Summary:To determine the validity and reliability of percent body fat estimates in 177 boys and 154 girls between 12-17 years of age, percent body fat was assessed once using dual-energy X-ray absorptiometry and twice using the sum of two skinfolds and three bioelectrical impedance analysis devices. The assessments were repeated on 79 participants on a second day. The agreement between the percent body fat estimates from the four prediction methods and dual-energy X-ray absorptiometry was evaluated using Bland-Altman analyses and a mixed linear model. All methods were reliable within and between days. The sum of two skinfolds (±6.8% body fat), OMRON (OMRON Healthcare Inc., Vernon Hills, Illinois, USA) bioelectrical impedance analysis (0 ± 7.3% body fat), and TANITA 521 (TANITA Corporation, Tokyo, Japan) bioelectrical impedance analysis (±7.6% body fat) had wide prediction intervals and are acceptable for use in large population-based studies. The TANITA 300A bioelectrical impedance analysis is not recommended for use in children and adolescents due to its wide prediction interval (±8.1% body fat) and large bias. A criterion method should be used when the accurate assessment of body composition of an individual is critical.
ISSN:1091-367X
1532-7841
DOI:10.1080/1091367X.2011.537873