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MARÍA HERNÁNDEZ RUIZ DE EGUILAZ Y COLS. AN. R. ACAD. NAC. FARM.

sión, los resultados de este estudio apuntan a que la medida del
contenido de grasa puede ser diferente en función del método de
estimación empleado, pero la buena correlación entre ellos permite
comparar la evolución del contenido de grasa durante una interven-
ción dietética, siempre y cuando se tome como referencia el mismo
aparato para un mismo individuo.

Palabras clave: Antropometría y Composición corporal; Absor-
ciometría dual de Rayos X; Bioimpedancia; Pliegues cutáneos; Índi-
ce de Masa Corporal.

ABSTRACT

Comparative study of body composition measures by dual
X-ray absortiometry, bioimpedance and skinfolds in women

Body composition assessments are important important
measurements for the diagnosis and monitoring of obesity. The
present study compared the body mass index (IMC) with body fat
content estimated by skinfold (PT), bioelectric impedance (BIA) and
dual X-ray absorptiometry (DEXA) in adult women (n = 91).
Although body fat estimations between methods differed, correlation
between the various body composition methods was positive and
statistically significant (IMC-BIA, DEXA, PT: 0.902, 0.780, 0.722,
respectively; BIA-DEXA, PT: 0.794 y 0.674 respectively; DEXA-PT:
0.787, all correlations p < 0.001). In relation to concordance indexes
between measurements to classify individuals in normo- or
overweight, it was globally low, with the exception of the
concordance between body mass index with bioimpedance, which
was good, and body mass index with triceps skinfold, which was
acceptable. In conclusion, the outcomes obtained in the present study
suggest that body fat content estimation can be very different
depending on the method employed but the good correlation existing
between methods permits to compare body fat content evolution
during a dietary intervention, if the analysis is always performed by
the same method in the same individual.

Keywords: Anthropometry and body composition; Dual X-ray
Absorptiometry; Bioimpedance; Skinfolds; Body Mass Index.

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