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Body composition and plasma creatine kinase activity.

R Swaminathan1, C S Ho, S P Donnan

  • 1Department of Chemical Pathology, Chinese University of Hong Kong.

Annals of Clinical Biochemistry
|July 1, 1988
PubMed
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Plasma creatine kinase (CK) activity is linked to lean body mass (LBM) in healthy adults. While men generally have higher CK and LBM, both sexes show a correlation between these factors.

Area of Science:

  • Biochemistry
  • Human Physiology
  • Clinical Chemistry

Background:

  • Plasma creatine kinase (CK) is an enzyme found in muscle tissue.
  • Lean body mass (LBM) represents the mass of the body excluding fat.
  • Understanding factors influencing plasma CK activity is crucial for interpreting clinical results.

Purpose of the Study:

  • To investigate the relationship between plasma creatine kinase (CK) activity and lean body mass (LBM) in a healthy adult population.
  • To examine potential differences in plasma CK activity and LBM between men and women.
  • To explore the influence of age on plasma CK activity and its correlation with LBM.

Main Methods:

  • Plasma CK activity and LBM were measured in 120 women and 70 men aged 20-82 years.
  • Anthropometry was used to determine LBM.

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  • Product moment and partial correlation coefficients were calculated to assess relationships between variables.

    • Main Results:

    • Men exhibited higher plasma CK activity and LBM compared to women.
    • In men, plasma CK activity correlated positively with LBM and negatively with age.
    • In women, plasma CK activity showed a significant correlation with age.
    • Partial correlation analysis revealed a significant association between plasma CK and LBM in both sexes.

    Conclusions:

    • Plasma CK activity in healthy individuals is related to LBM.
    • LBM is not identified as a primary determinant of plasma CK activity in healthy subjects.
    • Age and sex are factors that may influence plasma CK levels in relation to LBM.