hydrodensitometry

un·der·wat·er weigh·ing

(ŭn'dĕr-waw'tĕr wā'ing)
Assessment of body volume by measuring a person's weight in air and again under water; loss of scale weight (corrected for water density) equals body volume. Body density (body mass:volume ratio) is then used to compute percent body fat.
Synonym(s): densitometry, hydrodensitometry, hydrostatic weighing.

hydrodensitometry

(hi?dro-den?si-tom'e-tre)
The weighing of an object immersed in water and subsequent measurement of the water displaced. The specific gravity of the body can be estimated from that information, and the percentage of the body fat can be estimated.
See: lean body mass
References in periodicals archive ?
100 g/cc) which the widely used two-compartment TBW and hydrodensitometry methods are based on were not significantly different in young and old females.
This slope was influenced by an outlier (the subject with the greatest body fat), nevertheless the relationship is consistent with a previous study reporting a similar relationship when NIR was compared with hydrodensitometry (25,26) and suggests t his technique would be inappropriate for use in a longitudinal study.
2000) Whole body air displacement plethysmography compared with hydrodensitometry for body composition analysis.