RESUMEN: En nuestro país y en el mundo se han realizado una serie de investigaciones en el área de la morfoestructura humana, pero pocos trabajos que describan el perfil antropométrico de personas jóvenes saludables. Se evaluaron a 100 hombres y 79 mujeres de entre 20 y 29 años de edad, sin factores de riesgo a la salud. Se evaluó de acuerdo a un protocolo de ISAK con variables que permite estimar la composición corporal y el somatotipo de los individuos. De esta manera se presentan las tablas de resultados como una forma de usarlas de referencia. Nuestro grupo de referencia evaluado (CHIREF) con sus resultados de composición corporal, somatotipo e índices corporales, aporta una nueva fuente de información de la V Región y actualizada para Chile, la cual favorecerá las comparaciones para distintos grupos de edades, condiciones de salud, deportes y etnias, considerando la necesidad de aumentar el grupo etario y la cantidad de variables antropométricas para ampliar el universo de comparación y mejorar la referencia comparativa.

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SUMMARY:The rate is assessed as per the body fat percentages (%BF) estimated through anthropometric measurements and manual bioimpedance, according to gender and adiposity rate within the paediatric population. The %BF is assessed by anthropometry using the Slaughter equation for cutaneous skinfolds and manual bioimpedance (Omron model HBF-306INTTM) to 321 students (160 females and 161 males) between 10-18 years. The association degree among the methods was measured using the Pearson correlation coefficient (r). The consistency among methods was analysed through the intra-class correlation coefficient (ICC) and the consistency correlation coefficient of Lin (CCC), grouping the population by gender and adiposity rate. The reference method was the cutaneous skinfolds assessed by the Slaughter equation. Optimum and high adiposity rates were recorded for the studied sample. The r between the bioimpedance and the anthropometry was 0.689, which corresponds to moderate. However, it decreased according to the gender and adiposity rate (females: optimum 0.409 and high 0.610; males: optimum 0.335 and high 0.507). The ICC was 0.668, which also decreased by gender and adiposity rate (females: optimum 0.323 and high 0.578; males: optimum 0.229 and high 0.506). CCC was poor (<0.90) by gender and adiposity rate. The study shows differences for both methods in this age range, which is accentuated by gender and adiposity rate. Therefore, the use of manual bioimpedance as an interchangeable method with the anthropometric measurements in children and adolescents is not suggested as it underestimates the %BF.