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A comparison of the body composition estimated by densitometry and total body potassium measurement in trained and untrained subjects


For the study of the body composition in vivo many methods are available. Two more elaborate methods are densitometry and K-40 measurement. During a period of training changes in body composition occur, viz. a decrease in the fatmass (FM) and an increase in the fatfree mass (FFM). The body composition (FM and FFM) of 15 trained and 20 untrained subjects was investigated applying the two above mentioned methods.

The body composition estimated from body density differs clearly from the body composition estimated from body potassium measurement in trained as well as in untrained subjects.

One of the explanations for this discrepancy could be, that between individuals the K-content of the FFM varies greately. One of the factors causing a difference in the K-content of the FFM could be the training level; in the trained subjects a mean value of 69.0 mEq per kg FFM and in the untrained subjects of 61.6 mEq per kg FFM could be calculated.

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  1. Allen, T. H., Anderson, E. C., Langham, W. H.: Total body potassium and gross body weight in relation to age. J. Geront.15, 348–356 (1960)

  2. Anderson, E. C.: Three-component body composition analysis based upon potassium and water determinations. Ann. N. Y. Acad. Sci.110, 189 (1963)

  3. Brožek, J., Grande, F., Anderson, J. T., Keys, A.: Densitometric analysis of body compositions: revision of some quantitative assumptions. Ann. N. Y. Acad. Sci.110, 113–140 (1963)

  4. Cheek, D. B.: Human growth: Body composition, cell growth, energy and intelligence. Philadelphia: Lea and Febiger 1968

  5. Dempsey, J. A.: Anthropometical observations on obese and nonobese young men undergoing a program of vigorous physical exercise. Res. Quart.35, 275–287 (1964)

  6. Forbes, G. B., Gallup, H., Hursch, J. B.: Estimation of total body fat from potassium-40 content. Science135, 101–102 (1961)

  7. Leusink, J. A.: Fit, vet, vetvrij en vrije vetzuren. Acad. Thesis State University Utrecht, The Netherlands (1972)

  8. Myhre, L. G., Kessler, W. V.: Body density and potassium-40 measurements of body composition as related to age. J. appl. Physiol.21, 1251–1255 (1966)

  9. Novak, L. P., Hyatt, R. E., Alexander, J. D.: Body composition and physiologic function of athletes. J. Amer. med. Ass.205, 140–146 (1968)

  10. Parizkova, J.: The development of subcutaneous fat in adolescents and the effect of physical training and sport. Physiol. Bohemoslov.8, 112–117 (1959)

  11. Rathbun, E. N., Pace, N.: Studies of body composition. J. biol. Chem.158, 667–691 (1945)

  12. Siri, W. E.: Fat, water and lean tissue studies. Fed. Proc.12, 133 (1953)

  13. Sprynarova, S., Parizkova, J.: Changes in the aerobic capacity and body composition in obese boys after reduction. J. appl. Physiol.20, 934–937 (1965)

  14. Steinkamp, R. C., Cohen, N. L., Gaffey, W. R., McKey, T., Bron, G., Siri, W. E., Sargent, T. W., Isaacs, E.: Measures of body fat and related factors in normal adults-II. J. chron. Dis.18, 1291–1307 (1965)

  15. Thompson, C. W.: Changes in body fat, estimated from skinfold measurements of varsity college football players during a season. Res. Quart.30, 87–93 (1959)

  16. Thompson, C. W., Buskirk, E. R., Goldman R. F.: Changes in body fat, estimated from skinfold measurements of college basketball and hockeyplayers during a season. Res. Quart.27, 418–430 (1956)

  17. Woodward, K. T., Trujillo, T. T., Schuch, R. L., Anderson, E. C.: Correlation of total body potassium with body water. Nature (Lond.)178, 97–98 (1956)

  18. Young, C. M., Martin, M. E. K., Chihan, M., McCarthy, M., Manniello, M. J., Harmuth, E. H., Fryer, J. H.: J. Amer. diet. Ass.38, 332–340 (1961)

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Leusink, J.A. A comparison of the body composition estimated by densitometry and total body potassium measurement in trained and untrained subjects. Pflugers Arch. 348, 357–362 (1974).

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Key words

  • Body Composition
  • Body Density
  • Body Potassium
  • Training