Surgery – Truss – Pad
Patent
1994-12-12
1997-04-01
Hindenburg, Max
Surgery
Truss
Pad
A61B 505
Patent
active
056156898
ABSTRACT:
The inability to precisely estimate body composition using simple, inexpensive and easily applied techniques is an impediment to clinical investigations in nutrition. In this study, predictive equations for body cell mass (BCM), fat free mass (FFM), and total body water (TBW), were derived, using single frequency bioimpedance analysis (BIA), in 332 subjects, including white, black and hispanic men and women, both normal healthy controls and patients infected with the human immunodeficiency virus (HIV). Preliminary studies demonstrated more accurate predictions of BCM when using parallel transformed values of reactance than the values reported by the bioimpedance analyzer. Modeling equations derived after logarithmic transformation of height, reactance and impedance were more accurate predictors than equations using height.sup.2 /resistance, and the use of gender-specific equations further impoved accuracy. The addition of weight to the modeling equation also improved accuracy but was less important than the impedance measurements. The resulting equations were internally validated, and race, disease (HIV infection) and malnutrition were shown not to affect the predictions. The equation for FFM also was validated externally against results derived from hydrodensitometry measurements in a group of 440 healthy individuals, with a standard error of the estimate of under 5%. These results indicate that body composition can be estimated accurately using simple, inexpensive, and easily applied techniques, and that the estimates are sufficiently precise for use in clinical investigation and clinical practice.
REFERENCES:
patent: 4911175 (1990-03-01), Shizgal
patent: 4947862 (1990-08-01), Kelly
patent: 5086781 (1992-02-01), Bookspan
patent: 5335667 (1994-08-01), Cha
patent: 5449000 (1995-09-01), Libke et al.
Henry C. Lukaski, "Methods for the assessment of human body composition: traditional and new," 46 Am. J. Clin. Nutr. 537 (1987).
Robert F. Kushner, "Bioelectrical Impedance Analysis: A Review of Principles and Applications," 11 J. Am. Coll. Nutr. 199 (1992).
Henry C. Lukaski et al., "Validation of tetrapolar bioelectrical impedance method to assess human body composition," 60 J. Appl. Physiol. 1327 (1986).
Robert F. Kushner et al., "Estimation of total body water by bioelectrical impedance analysis," 44 Am. J. Clin. Nutr. 417 (1986).
David McDougall et al., "Body Composition Measurements from Whole Body Resistance and Reactance," 37 Surg. Forum 42 (1986).
Henry C. Lukaski et al., "Assessment of fat-free mass using bioelectrical impedance measurements of the human body," 41 Am. J. Clin. Nutr. 810 (1985).
Ronald E. Young et al., "Bioelectrical-impedance analysis as a measure of body composition in a West Indian population," 55 Am. J. Clin. Nutr. 1045 (1992).
Elizabeth A. Conlisk et al., "Predicting body composition from anthropometry and bioimpedance in marginally undernourished adolescents and young adults," 55 Am. J. Clin. Nutr. 1051 (1992).
Annemie MWJ Schols et al., "Body composition by bioelectrical-impedance analysis compared with deuterim dilution and skinfold anthropometry in patients with chronic obstructive pulmonary disease," 53 Am. J. Clin. Nutr. 421 (1991).
Karen R. Segal et al., "Estimation of extracellular and total body water by multiple-frequency bioelectrical-impedance measurement," 54 Am. J. Clin. Nutr. 26 (1991).
Herman L. Johnson et al., "Predicting Total Body Water and Extracellular Fluid Volumes from Bioelectrical Measurements of the Human Body," 11 J. Am. Coll. Nutr. 539 (1992).
T. E. M. S. Sluys et al., "Body Composition in Patients with Acquired Immunodeficiency Syndrome: A Validation Study of Bioelectric Impedance Analysis," 17 JPEN 404 (1993).
Centers for Disease Control, "Classification System for Human T-Lymphotropic Virus Type III/Lymphadenopathy-Associated Virus Infections," 105 Ann. Intern. Med. 234 (1986).
Richard N. Pierson, Jr., et al., "Total-body potassium in health: effects of age, sex, height, and fat," 226 Am. J. Physiol. 206 (1974).
Donald P. Kotler et al., "Body composition studies in patients with the acquired immunodeficiency syndrome," 42 Am. J. Clin. Nutr. 1255 (1985).
Richard N. Pierson, Jr., et al., "Body potassium by four-pi .sup.40 K counting: an anthropometric correction," 246 Am. J. Physiol. F234 (1984).
R. N. Pierson, Jr., et al., "Body Composition Measurements in Normal Man: The Potassium, Sodium, Sulfate and Tritium Spaces in 58 Adults," 35 J. Chron. Dis. 419 (1982).
Francis D. Moore et al., "Body Cell Mass and Limits of Hydration of the Fat-Free Body: Their Relation to Estimated Skeletal Weight," 110 Ann. N.Y. Acad. Sci. 62 (1963), reprinted in 4 Nutr. 277 (1988)
M. Barac-Nieto et al., "Body composition in chronic undernutrition," 31 Am. J. Clin. Nutr. 23 (1978).
H. M. James et al., "Whole body cellular and collagen nitrogen in healthy and wasted man,:" 67 Clin. Sci. 73 (1984).
G. Babameto et al., "Alterations in Hydration in HIV-Infected Individuals," 42 Clin. Reas. 279A (Abstract, 1994).
Ellen Engelson et al., "Effects of Megestrol Acetate Therapy upon Body Composition and Serum Testosterone in AIDS," 42 Clin. Reas. 281 A (Abstract, 1994).
Paul Deurenberg et al., "Changes in fat-free mass during weight loss measured by bioelectrical impedance and by densitometry," 49 Am. J. Clin. Nutr. 33 (1989).
Jorge A. Vazquez et al., "Validity of bioelectrical-impedance analysis in measuring changes in lean body mass during weight reduction," 54 Am. J. Clin. Nutr. 970 (1991).
Gilbert B. Forbes et al., "Is bioimpedance a good predictor of body-composition change?," 56 Am. J. Clin. Nutr. 4 (1992).
Hindenburg Max
St. Luke's-Roosevelt Hospital
LandOfFree
Method of predicting body cell mass using bioimpedance analysis does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of predicting body cell mass using bioimpedance analysis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of predicting body cell mass using bioimpedance analysis will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-532480