Segmental Musculoskeletal Examinations using Dual-Energy X-Ray Absorptiometry (DXA): Positioning and Analysis Considerations

摘要: Musculoskeletal examinations provide informative and valuable quantitative insight into muscle bone health. DXA is one mainstream tool used to accurately reliably determine body composition components mass characteristics in-vivo. Presently, whole scan models separate the axial appendicular regions, however there a need for localised segmentation further examine regions of interest within upper lower extremities. Similarly, inconsistencies pertaining patient positioning exist in literature which influence measurement precision analysis outcomes highlighting standardised procedure. This paper provides reproducible: 1) procedures using 2) reliable segmental through descriptive boundaries. Whole-body scans were performed on forty-six (n = 46) football athletes (age: 22.9 ± 4.3 yrs; height: 1.85 0.07 cm; weight: 87.4 10.3 kg; fat: 11.4 4.5 %) DXA. All segments across all analysed three times by main investigator days, independent investigators week following original analysis. To intra-rater inter-rater, between day researcher reliability, coefficients variation (CV) intraclass correlation (ICC) determined. Positioning presented this study produced very high, nearly perfect intra-tester (CV ≤ 2.0%; ICC ≥ 0.988) inter-tester 2.4%; 0.980) demonstrating excellent reproducibility practitioners. Standardised are necessary. Future studies aiming quantify report analyses upper- lower-body musculoskeletal properties whole-body encouraged use image outlined paper. Key pointsMusculoskeletal technology require highly reproducible measure monitor axial, interest.Internal rotation fixation lower-limbs strongly recommended during prevent undesired movement, improve frontal accessibility enhance ankle joint visibility performance analysis.Appendicular regional upper-body segmentations, with hard-tissue 1.5%; R 0.990) achieving greater reliability error than soft-tissue masses when our