Characterizing Marathon-Induced Metabolic Changes Using ¹H-NMR Metabolomics.

Area of Science:

• Sports Medicine
• Metabolomics
• Biochemistry

Background:

• Strenuous exercise, like marathons, can negatively impact physiology and immunity.
• Previous research noted metabolite fluctuations but lacked a holistic view of marathon-induced metabolic changes.

Purpose of the Study:

• To comprehensively identify metabolic alterations following marathon completion.
• To understand the metabolic load and pathway regulation during endurance events.

Main Methods:

• Utilized untargeted proton nuclear magnetic resonance (¹H-NMR) spectrometry.
• Employed metabolomics to analyze pre- and post-marathon samples from 30 athletes.
• Applied principal component analysis (PCA) for data visualization and differentiation.

Main Results:

• Distinct metabolic profiles were observed between pre- and post-marathon states.
• Seventeen metabolites showed statistically significant changes.
• Observed decreased amino acids, increased ketone bodies, glycolysis, TCA cycle, and amino acid catabolism intermediates.
• Elevated creatinine and creatine indicated muscle damage.

Conclusions:

• Marathon running imposes a substantial metabolic burden.
• Energy-producing pathways are significantly regulated to meet the demands of endurance exercise.
• Metabolic changes provide insight into physiological alterations post-marathon.