Dual-energy X-ray absorptiometry prediction of adipose tissue depots in children and adolescents.
Pediatr Res
; 72(4): 420-5, 2012 Oct.
Article
en En
| MEDLINE
| ID: mdl-22821057
ABSTRACT
BACKGROUND:
The measurement of adipose tissue (AT) depots in vivo requires expensive imaging methods not accessible to most clinicians and researchers. The study aim was to derive mathematical models to predict total AT (TAT) and subdepots from total body fat derived from a dual-energy X-ray absorptiometry (DXA) scan.METHODS:
Models were developed to predict magnetic resonance imaging-derived TAT and subdepots subcutaneous AT, visceral AT, and intermuscular AT from DXA total body fat (Fat(DXA)) using cross-sectional data (time 0 (T0)) and validated results using 1 (T1) and 2 (T2) y follow-up data. Subjects were 176 multiethnic healthy children ages 5-17 y at T0. Twenty-two were measured at T1 and T2. TAT was compared with Fat(DXA).RESULTS:
At T0, TAT was greater than Fat(DXA) (12.5 ± 8.4 vs.12.0 ± 9.4 kg; P < 0.0001), with a quadratic relationship between TAT and Fat(DXA) that varied by sex. Predicted mean TATs were not different from measured TATs T1 (9.84 ± 4.45 kg vs. 9.50 ± 4.37 kg; P = 0.11); T2 (12.94 ± 6.75 kg vs. 12.89 ± 7.09 kg; P = 0.76). The quadratic relationship was not influenced by race or age.CONCLUSION:
In general, the prediction equations for TAT and subdepots were consistent with the measured values using T1 and T2 data.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Envejecimiento
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Absorciometría de Fotón
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Tejido Adiposo
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Imagen de Cuerpo Entero
/
Adiposidad
Tipo de estudio:
Observational_studies
/
Prevalence_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Adolescent
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Child
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Child, preschool
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Female
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Humans
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Male
Idioma:
En
Revista:
Pediatr Res
Año:
2012
Tipo del documento:
Article
País de afiliación:
Estados Unidos