Jackson AS; Countering Space Adaptation with Exercise: Current Issues Workshop (1989 Sep 26-28 : Lyndon B. Johnson Space Center, Houston, TX).
Workshop Counter Space Adapt Exerc. 1994; 236.
A previous paper (Jackson 1984) outlined the problems and procedures of estimating body composition from anthropometric methods. The purpose of this paper is to extend the generalizability and validity issues raised in the paper and apply them to bioelectrical impedance methods of measuring body composition. Published bioelectrical impedance equations with functions of estimating fat-free weight and body density were applied to the data of 82 women and 52 men. Hydrostatically measured body density was the dependent variable of this analysis. The cross-validation correlations between impedance estimated and hydrostatically determined body density were low, below 0.76, which was similar to what was obtained with body mass index. Multiple regression analysis was used to examine the independent relationship of the ratio of Height2/resistance in combination with body mass index. The Height2/resistance was combined in a multiple regression equation with body mass index, the Height2/resistance regression weight was low and near zero while the body mass index regression weights were over three times larger. This showed that height and weight and not bioelectrical impedance were the major predictors of body density.
Publication Types:
Keywords:
- Body Composition
- Body Height
- Body Mass Index
- Body Weight
- Electric Impedance
- Female
- Humans
- Male
- Obesity
- Regression Analysis
- methods
Other ID:
UI: 102215910
From Meeting Abstracts