Abstract

GALLARDO CASTRO, Joseph Arturo; ZAPATA NEGREIROS, José Aarón; LLUNCOR VASQUEZ, Juan Oscar  and  CIEZA ZEVALLOS, Javier Antonio. Evaluation of body water measured by electric bio impedance in young healthy adults and its estimated correlation using conventional formula. Rev Med Hered [online]. 2016, vol.27, n.3, pp.146-151. ISSN 1018-130X.

Objectives: To compare the precision of Watson´s, Hume-Weyers´ anthropometric formula and that based on the body percentage by gender to estimate de total body water in relation to that measured by electric bio impedance considering the latter as the gold standard. Methods: 17 healthy volunteers with normal anthropometric values between 21 and 29 years were recruited. Paired students´ t-test was used to evaluate the precision in the estimation of body water, and logistic regression analysis and Pearson´s correlation was used to evaluate systematic error. Results: Mean body water was 5.83 liters by electric bio impedance and 36.88 ± 7.47 liters by weight and sex. The Watson´s formula sub-estimated the body water in the paired analysis, but all had good correlation with bio impedance. The Humes-Weyers´ formula showed minor systematic error compared to bio impedance. Conclusions:This study shows that Humes-Weyers´ formula provides the best precision in estimating body water.

Keywords : Total body water; anthropometry; electrical impedance.

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