An evaluation of a bioelectrical impedance analyser for the estimation of body fat content.
Open Access
- 1 March 1993
- journal article
- research article
- Published by BMJ in British Journal of Sports Medicine
- Vol. 27 (1), 63-66
- https://doi.org/10.1136/bjsm.27.1.63
Abstract
Measurement of body composition is an important part of any assessment of health or fitness. Hydrostatic weighing is generally accepted as the most reliable method for the measurement of body fat content, but is inconvenient. Electrical impedance analysers have recently been proposed as an alternative to the measurement of skinfold thickness. Both these latter methods are convenient, but give values based on estimates obtained from population studies. This study compared values of body fat content obtained by hydrostatic weighing, skinfold thickness measurement and electrical impedance on 50 (28 women, 22 men) healthy volunteers. Mean(s.e.m.) values obtained by the three methods were: hydrostatic weighing, 20.5(1.2)%; skinfold thickness, 21.8(1.0)%; impedance, 20.8(0.9)%. The results indicate that the correlation between the skinfold method and hydrostatic weighing (0.931) is somewhat higher than that between the impedance method and hydrostatic weighing (0.830). This is, perhaps, not surprising given the fact that the impedance method is based on an estimate of total body water which is then used to calculate body fat content. The skinfold method gives an estimate of body density, and the assumptions involved in the conversion from body density to body fat content are the same for both methods.Keywords
This publication has 12 references indexed in Scilit:
- Variability in the Measures of Body FatSports Medicine, 1991
- Body fat in lean and overweight women estimated by six methodsBritish Journal of Nutrition, 1991
- Bioelectrical Impedance Analysis to Determine Fat-Free Mass, Total Body Water and Body FatSports Medicine, 1990
- Methods for the assessment of human body composition: traditional and newThe American Journal of Clinical Nutrition, 1987
- Bioelectrical impedance analysis: is it a reliable estimator of lean body mass and total body water.1987
- STATISTICAL METHODS FOR ASSESSING AGREEMENT BETWEEN TWO METHODS OF CLINICAL MEASUREMENTThe Lancet, 1986
- Skinfolds and body density and their relation to body fatness: a review.1981
- Further simplification of a method for determination of residual lung volumeMedicine & Science in Sports & Exercise, 1980
- A Comparison of the Fat-Free Mass of Young Adults Estimated by Anthropometry, Body Density and Total Body Potassium ContentClinical Science, 1972
- The assessment of the amount of fat in the human body from measurements of skinfold thicknessBritish Journal of Nutrition, 1967