Anthropometric and bioimpedance regression equations were developed for young children using total body water (TBW) as the criterion. Ninety-six boys and girls, 4-8 years of age, served as subjects. Measures included height, weight, five skinfold thicknesses, three circumferences, total body bioimpedance, and separate bioimpedance measures of the arm, trunk, and leg. Height and weight alone accounted for .70 of the variance in TBW. Adding other measures did not significantly increase the R2. Standard errors of estimate for TBW were similar to those reported for older individuals (1.39-1.44 1) but may be too large relative to the small size of the subjects for the equations to be acceptable.
Supported in part by NIH Grant No. R01-HL35189 and Valhalla Scientific. DeLozier, Gutin, Basch, Contento, Zybert, and Rips are with the Ctr. for Health Promotion, Teachers College, Columbia University. Shea and Irigoyen are with the Columbia University College of Physicians & Surgeons. Pierson and Wang are with the Nuclear Medicine Dept. at St. Luke’s-Roosevelt Hospital.