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- Publisher Website: 10.1186/1471-2431-14-249
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Article: Bioelectrical impedance analysis to estimate body composition, and change in adiposity, in overweight and obese adolescents: Comparison with dual-energy x-ray absorptiometry
Title | Bioelectrical impedance analysis to estimate body composition, and change in adiposity, in overweight and obese adolescents: Comparison with dual-energy x-ray absorptiometry |
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Authors | |
Keywords | Bioelectrical impedance analysis Dual-energy X-ray absorptiometry Obese Adolescents Cole-Cole plot |
Issue Date | 2014 |
Citation | BMC Pediatrics, 2014, v. 14, n. 1 How to Cite? |
Abstract | © 2014 Wan et al.; licensee BioMed Central Ltd.Background: There is a need for a practical, inexpensive method to assess body composition in obese adolescents. This study aimed to 1) compare body composition parameters estimated by a stand-on, multi-frequency bioelectrical impendence (BIA) device, using a) the manufacturers' equations, and b) published and derived equations with body composition measured by dual-energy x-ray absorptiometry (DXA) and 2) assess percentage body fat (%BF) change after a weight loss intervention.Methods: Participants were 66 obese adolescents, mean age (SD) 12.9 (2.0) years. Body composition was measured by Tanita BIA MC-180MA (Tanita BIA8) and DXA (GE-Lunar Prodigy). BIA resistance and reactance data at frequencies of 5, 50, 250 and 500 kHz, were used in published equations, and to generate a new prediction equation for fat-free mass (FFM) using a split-sample method. Approximately half (n = 34) of the adolescents had their body composition measured by DXA and BIA on two occasions, three to nine months apart.Results: The correlations between FFM (kg), fat mass (kg) and %BF measured by BIA and DXA were 0.92, 0.93 and 0.78, respectively. The Tanita BIA8 manufacturers equations significantly (P < 0.001) overestimated FFM (4.3 kg [-5.3 to 13.9]) and underestimated %BF (-5.0% [-15 to 5.0]) compared to DXA. The mean differences between BIA derived equations and DXA measured body composition parameters were small (0.4 to 2.1%), not significant, but had large limits of agreements (~ ±15% for FFM). After the intervention mean %BF loss was similar by both methods (~1.5%), but with wide limits of agreement.Conclusion: The Tanita BIA8 could be a valuable clinical tool to measure body composition at the group level, but is inaccurate for the individual obese adolescent. |
Persistent Identifier | http://hdl.handle.net/10722/236686 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Wan, Ching S. | - |
dc.contributor.author | Ward, Leigh C. | - |
dc.contributor.author | Halim, Jocelyn | - |
dc.contributor.author | Gow, Megan L. | - |
dc.contributor.author | Ho, Mandy | - |
dc.contributor.author | Briody, Julie N. | - |
dc.contributor.author | Leung, Kelvin | - |
dc.contributor.author | Cowell, Chris T. | - |
dc.contributor.author | Garnett, Sarah P. | - |
dc.date.accessioned | 2016-12-01T09:08:36Z | - |
dc.date.available | 2016-12-01T09:08:36Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | BMC Pediatrics, 2014, v. 14, n. 1 | - |
dc.identifier.uri | http://hdl.handle.net/10722/236686 | - |
dc.description.abstract | © 2014 Wan et al.; licensee BioMed Central Ltd.Background: There is a need for a practical, inexpensive method to assess body composition in obese adolescents. This study aimed to 1) compare body composition parameters estimated by a stand-on, multi-frequency bioelectrical impendence (BIA) device, using a) the manufacturers' equations, and b) published and derived equations with body composition measured by dual-energy x-ray absorptiometry (DXA) and 2) assess percentage body fat (%BF) change after a weight loss intervention.Methods: Participants were 66 obese adolescents, mean age (SD) 12.9 (2.0) years. Body composition was measured by Tanita BIA MC-180MA (Tanita BIA8) and DXA (GE-Lunar Prodigy). BIA resistance and reactance data at frequencies of 5, 50, 250 and 500 kHz, were used in published equations, and to generate a new prediction equation for fat-free mass (FFM) using a split-sample method. Approximately half (n = 34) of the adolescents had their body composition measured by DXA and BIA on two occasions, three to nine months apart.Results: The correlations between FFM (kg), fat mass (kg) and %BF measured by BIA and DXA were 0.92, 0.93 and 0.78, respectively. The Tanita BIA8 manufacturers equations significantly (P < 0.001) overestimated FFM (4.3 kg [-5.3 to 13.9]) and underestimated %BF (-5.0% [-15 to 5.0]) compared to DXA. The mean differences between BIA derived equations and DXA measured body composition parameters were small (0.4 to 2.1%), not significant, but had large limits of agreements (~ ±15% for FFM). After the intervention mean %BF loss was similar by both methods (~1.5%), but with wide limits of agreement.Conclusion: The Tanita BIA8 could be a valuable clinical tool to measure body composition at the group level, but is inaccurate for the individual obese adolescent. | - |
dc.language | eng | - |
dc.relation.ispartof | BMC Pediatrics | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Bioelectrical impedance analysis | - |
dc.subject | Dual-energy X-ray absorptiometry | - |
dc.subject | Obese | - |
dc.subject | Adolescents | - |
dc.subject | Cole-Cole plot | - |
dc.title | Bioelectrical impedance analysis to estimate body composition, and change in adiposity, in overweight and obese adolescents: Comparison with dual-energy x-ray absorptiometry | - |
dc.type | Article | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1186/1471-2431-14-249 | - |
dc.identifier.scopus | eid_2-s2.0-84910075407 | - |
dc.identifier.volume | 14 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | null | - |
dc.identifier.epage | null | - |
dc.identifier.eissn | 1471-2431 | - |
dc.identifier.isi | WOS:000344894600001 | - |
dc.identifier.issnl | 1471-2431 | - |