Characterizing marathon-induced metabolic changes using1h-nmr metabolomics

Rachelle Bester, Zinandré Stander, Shayne Mason, Karen M. Keane, Glyn Howatson, Tom Clifford, Emma J. Stevenson, Du Toit Loots

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Although physical activity is a health-promoting, popular global pastime, regular engage-ment in strenuous exercises, such as long-distance endurance running races, has been associated with a variety of detrimental physiological and immunological health effects. The resulting altered physiological state has previously been associated with fluctuations in various key metabolite con-centrations; however, limited literature exists pertaining to the global/holistic metabolic changes that are induced by such. This investigation subsequently aims at elucidating the metabolic changes induced by a marathon by employing an untargeted proton nuclear magnetic resonance (1H-NMR) spectrometry metabolomics approach. A principal component analysis (PCA) plot revealed a natural differentiation between pre-and post-marathon metabolic profiles of the 30-athlete cohort, where 17 metabolite fluctuations were deemed to be statistically significant. These included reduced concentrations of various amino acids (AA) along with elevated concentrations of ketone bodies, glycolysis, tricarboxylic acid (TCA) cycle, and AA catabolism intermediates. Moreover, elevated concentrations of creatinine and creatine in the post-marathon group supports previous findings of marathon-induced muscle damage. Collectively, the results of this investigation characterize the strenuous metabolic load induced by a marathon and the consequential regulation of main energy-producing pathways to accommodate this, and a better description of the cause of the physiological changes seen after the completion of a marathon.

Original languageEnglish
Article number656
JournalMetabolites
Volume11
Issue number10
DOIs
Publication statusPublished - Oct 2021

Keywords

  • Endurance races
  • H-NMR spectrome-try
  • Marathon
  • Metabolites
  • Serum metabolome
  • Untargeted metabolomics

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