Original Article
International Journal of Obesity (2008) 32, S58–S65; doi:10.1038/ijo.2008.184
Harmonization process and reliability assessment of anthropometric measurements in a multicenter study in adolescents
E Nagy1, G Vicente-Rodriguez2, Y Manios3, L Béghin4, C Iliescu5, L Censi6, S Dietrich7, F B Ortega8, T De Vriendt9, M Plada10, L A Moreno2 and D Molnar1 on behalf of the HELENA Study Group11
- 1Department of Paediatrics, University of Pécs, H-7623, Pécs-József A. 7, Hungary
- 2E.U. Ciencias de la Salud, Universidad de Zaragoza, Zaragoza, Spain
- 3Department of Nutrition and Dietetics, Harokopio University 70 E Venizelou Ave, Kallithea Athens, Greece
- 4EA-3925, Université Lille 2, Medicine Faculty, Hôpital Jeanne de Flandre, CHRU de Lille, Lille, France
- 5CIC 9301 CH&U-Inserm Lille, and Therapeutic and Predictive Medicine Institute, Hôpital cardiologique, CHRU de Lille, Lille, France
- 6Istituto Nazionale di ricerca per gli alimenti e la nutrizione Human Nutrition unit INRAN, Roma, Italy
- 7Department of Paediatrics and Adolescents Medicine, Medical University Vienne, Vienne, Austria
- 8Department of Physiology, School of Medicine, University of Granada, Granada, Spain
- 9Department of Public Health, Aspirant of the FWO Flanders, University of Ghent, De Pintelaan 185-2blok A, Gent, Belgium
- 10Department of Social Medicine, School of Medicine Preventive Medicine and Nutrition Clinic GR-71003 Heraklion Crete, Crete, Greece
Correspondence: Dr D Molnár, Department of Paediatrics, University of Pécs, 7623-Pécs, József A. u. 7., Hungary. E-mail: denes.molnar@aok.pte.hu
11See Appendix at the end of the supplement on page S82.
Abstract
Objective:
To describe the standardization process and reliability of anthropometric and bioelectrical impedance analysis (BIA) measurements. We examined both intra- and interobserver errors for skinfolds, circumferences and BIA.
Methods:
For the intraobserver error assessment, first of all, 202 adolescents in the pilot study (110 boys, 92 girls, aged 13.64
0.78 years) were assessed. For the second intraobserver and interobserver assessments, 10 adolescents were studied (5 boys and 5 girls).
Results:
The pilot study's intraobserver technical errors of measurement (TEMs) were between 0.12 and 2.9 mm for skinfold thicknesses, and between 0.13 and 1.75 cm for circumferences. Intraobserver reliability for skinfold thicknesses was greater than 69.44% and beyond 78.43% for circumferences. The final workshop's intraobserver TEMs for skinfold thicknesses and circumferences were smaller than 1; for BIA resistance TEMs were smaller than 0.1 
and for reactance they were smaller than 0.2 . Intraobserver reliability values were greater than 95, 97, 99 and 97% for skinfold thicknesses, circumferences, BIA resistance and reactance, respectively. Interobserver TEMs for skinfold thicknesses and circumferences ranged from 1 to 2 mm; for BIA they were 1.16 and 1.26 for resistance and reactance, respectively. Interobserver reliability for skinfold thicknesses and circumferences were greater than 90%, and for BIA resistance and reactance they were greater than 90%.
Conclusions:
After the results of the pilot study, it was necessary to optimize the quality of the anthropometric measurements before the final survey. Significant improvements were observed in the intraobserver reliabilities for all measurements, with interobserver reliabilities being higher than 90% for most of the measurements.
The Healthy Lifestyle in Europe by Nutrition in Adolescence Study aims to describe total body fat percentage and anthropometric indices of body fat distribution in European adolescents.
Keywords:
skinfold thickness, circumference, bioelectrical impedance analysis, technical error of measurement, reliability
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