Within-subject variability in body composition using dual-energy X-rayabsorptiometry
| Autor: | A. De Lorenzo, Angela Andreoli, N. Candeloro |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Adult
Male Observer Variation medicine.medical_specialty Reproducibility medicine.diagnostic_test Physiology Chemistry Coefficient of variation Reproducibility of Results Adipose tissue General Medicine Anthropometry Absorptiometry Photon Animal science Endocrinology Internal medicine Body Composition medicine Lean body mass Humans Composition (visual arts) Body mass index Dual-energy X-ray absorptiometry |
| Zdroj: | Clinical Physiology. 17:383-388 |
| ISSN: | 1365-2281 0144-5979 |
| DOI: | 10.1046/j.1365-2281.1997.04242.x |
| Popis: | The reproducibility of dual-energy X-ray absorptiometry (DXA) measurements for total body composition and for segmental body composition was investigated in 22 healthy male subjects who underwent six consecutive measurements in 90 min. Body weight (mean +/- SD) and body height were 72.3 +/- 8.8 kg and 1.75 +/- 0.04 m respectively, and body mass index was 23.5 +/- 2.5 kg m(-2). Bone mineral content (BMC) was 3.30 +/- 0.36 kg, lean mass and fat mass as measured by DXA were 57.1 +/- 6.1 kg and 11.8 +/- 6.5 kg respectively. For BMC, the reproducibility, expressed as the coefficient of variation, was 12%, 1.5%, 2.5%, 4.1% and 3.1% for total body, legs, arms, trunk and abdominal respectively. For lean tissue and for fat tissue, these values were 1.5% and 50%; 1.8% and 2.1%, 8.3% and 11.7%, 26% and 10.0%, 3.9% and 10.7% respectively. It is concluded that the reproducibility for BMC is excellent, but that for lean tissue and for fat tissue the variability is relatively high, especially in body segments. |
| Databáze: | OpenAIRE |
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