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Amino Acids

, Volume 26, Issue 1, pp 71–76 | Cite as

Plasma amino acids and sports injuries

  • M. T. M. van den Baar
  • D. Fekkes
  • C. R. van den Hoogenband
  • H. J. Duivenvoorden
  • L. Pepplinkhuizen
Article
  • 64 Downloads

Summary.

The aim of this study was to explore the relationship between changes in plasma amino acids and the incidence of sports injuries during a soccer season. Fourteen plasma amino acids were assayed at monthly intervals in 12 young soccer players during a whole soccer season. Based on the number and severity of injuries the soccer players were divided into an injury-prone and a non-injury-prone group. The mean plasma level of the amino acid glycine was significantly lower (P=0.009) in the injury-prone group than the other group, while the mean plasma levels of tyrosine, tryptophan and lysine were higher in the injury-prone group during this period (P<0.05). However there were no significant differences in the calculated plasma tryptophan and tyrosine/large neutral amino acids ratios. Significant linear time trends were observed for taurine, ornithine, lysine and the tryptophan/large neutral amino acids ratio.

These results indicate that the plasma concentrations of glycine and to a lesser extent those of tyrosine, tryptophan and lysine may be promising peripheral markers for injury-proneness in young soccer players. Whether a role for glycine substitution will be indicative to reduce the occurrence of sports injuries will need to be investigated in future studies.

Keywords: Amino acids – Glycine – Tryptophan – Tyrosine – Injury-prone – Plasma 

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Copyright information

© Springer-Verlag/Wien 2003

Authors and Affiliations

  • M. T. M. van den Baar
    • 1
  • D. Fekkes
    • 1
  • C. R. van den Hoogenband
    • 1
  • H. J. Duivenvoorden
    • 2
  • L. Pepplinkhuizen
    • 1
  1. 1.Section Pathophysiology of Behaviour, Department of Psychiatry, Erasmus Medical Center Rotterdam, Rotterdam, The NetherlandsThe Netherlands
  2. 2.Department of Medical Psychology and Psychotherapy, Erasmus Medical Center Rotterdam, Rotterdam, The NetherlandsThe Netherlands

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