Examining intra- and inter-tester reliability of post-scan dual-energy X-ray absorptiometry regional body composition analysis in athletes.
Background/objectives: The purpose of this investigation was (i) to assess the intra- and inter-tester reliability of delineating regions of interest (ROIs) in Dual-energy X-ray Absorptiometry (DXA) for measuring regional fat mass (FM), lean soft tissue (LST), and bone mineral content (BMC) and (ii)...
| Publicado en: | European Journal of Clinical Nutrition Vol. 80; no. 7; pp. 717 - 725 |
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| Autores principales: | , , , , |
| Formato: | diagnostic images research tables/charts Journal Article |
| Publicado: |
Springer Nature
Jul2026
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=195149965&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 195149965 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09543007 EUC jtl: European Journal of Clinical Nutrition issn: 09543007 maglogo: N pubinfo: dt: Jul2026 vid: 80 iid: 7 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 195149965 193037478 195149965 195149965 10.1038/s41430-026-01754-x 195149965 ppf: 717 ppct: 8 formats: tig: atl: Examining intra- and inter-tester reliability of post-scan dual-energy X-ray absorptiometry regional body composition analysis in athletes. aug: au: Silva, Tiago R. Gonçalves, Beatriz Poínhos, Rui Teixeira, Vitor Hugo Silva, Analiza M. affil: https://ror.org/043pwc612 Faculty of Nutrition and Food Sciences, University of Porto, Rua do Campo Alegre, 823, 4150-180, Porto, Portugal sug: subj: Absorptiometry, Photon Body Composition Athletes Reproducibility of Results Human Male Female Child Adolescence Adult Middle Age Adipose Tissue Bone Density Image Interpretation, Computer Assisted Paired T-Tests Wilcoxon Signed Rank Test One-Way Analysis of Variance Intraclass Correlation Coefficient Pearson's Correlation Coefficient Data Analysis Software Descriptive Statistics Child: 6-12 years Adolescent: 13-18 years Adult: 19-44 years Middle Aged: 45-64 years Male Female ab: Background/objectives: The purpose of this investigation was (i) to assess the intra- and inter-tester reliability of delineating regions of interest (ROIs) in Dual-energy X-ray Absorptiometry (DXA) for measuring regional fat mass (FM), lean soft tissue (LST), and bone mineral content (BMC) and (ii) to investigate the prevalence of inconsistencies between automatically defined ROIs and manufacturer guidelines. A secondary aim was to assess whether discrepancies in the delineation of ROIs by different testers could bias regional body composition changes over time. Methods: DXA measurements were performed with a total body scan in 86 athletes (64.0% females) from 12 sports. Two independent testers conducted post-scan analysis following the manufacturer's guidelines. Intra- and inter-tester reliability was evaluated using the intra-class correlation coefficient (ICC), mean differences, paired samples t-tests and Bland-Altman plots. Results: Intra- and inter-tester reliability was nearly perfect (ICC: 0.998-1.000) across all regions and components (FM, LST, and BMC). Mean differences were consistently <1% for all regions and components, except for left arm FM (1.4%; SD = 4.6%) in inter-tester reliability. Inconsistencies between automatically defined ROIs and manufacturer guidelines were frequent, with chest line corrections (which separate the arm from the trunk) required in 91.9% of scans. Inter-tester ICC for regional changes (n = 52) ranged from 0.668 to 0.981, with wider limits of agreement than cross-sectional estimates. Conclusion: DXA post-scan regional analysis can be performed with very high reliability and low measurement error, but manual review is essential. When monitoring changes over time, baseline and follow-up scans should be analyzed by the same evaluator. pubtype: Academic Journal doctype: diagnostic images research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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