Metabolomic responses are more sensitive in muscle than serum following 28 days of arduous exercise with erythropoietin administration
, TT performance, blood volume and iron homeostasis. Four serum and 51 muscle metabolites were different (P ≤ 0.05, false discovery rate ≤ 0.10) at POST compared to PRE. Of the WGCNA networks identified, two serum modules were associated with aerobic performance (P = 0.05), while five skeletal muscle modules were associated with both aerobic performance and iron outcomes (P = 0.05). Changes to the serum and skeletal muscle metabolomes indicate altered carnitine, β-alanine and glucose metabolism metabolites, likely depicting a shift to greater fat oxidation, buffering capacity and the alteration in iron homeostasis following 28 days of EPO administration and strenuous exercise.
Authors
- Benjamin J. Ryan (ORCID: https://orcid.org/0000-0001-5848-6988)
- David E Barney (ORCID: https://orcid.org/0000-0002-9940-0818)
- Marques A. Wilson (ORCID: https://orcid.org/0000-0002-0722-0079)
- Devin Drummer (ORCID: https://orcid.org/0000-0002-8003-562X)
- Emily E. Howard (ORCID: https://orcid.org/0000-0001-7979-1236)
- Nancy E. Murphy (ORCID: https://orcid.org/0000-0001-7776-4963)
- Stefan M. Pasiakos (ORCID: https://orcid.org/0000-0002-5378-5820)
- Jess A. Gwin (ORCID: https://orcid.org/0000-0002-0210-7157)
- James P. McClung (ORCID: https://orcid.org/0009-0000-0013-0364)
- Christopher T. Carrigan
- Julie L. McNiff
- Lee M. Margolis (ORCID: https://orcid.org/0000-0002-0652-1304)
Institutions
- Pennington Biomedical Research Center (US)
- U.S. Army Research Institute of Environmental Medicine (US)
- Oak Ridge Associated Universities (US)
- United States Army Combat Capabilities Development Command (US)
- United States Army (US)
- Oak Ridge Institute for Science and Education
Publication Details
- Journal
- Experimental Physiology
- Published
- 2026-04-11
- DOI
- https://doi.org/10.1113/ep093342
- Primary Topic
- Erythropoietin and Anemia Treatment
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- U.S. Department of Energy
- Oak Ridge Institute for Science and Education
- Army Research Institute for the Behavioral and Social Sciences
- U.S. Army Research Institute of Environmental Medicine
- U.S. Army Medical Research and Development Command
- Military Operational Medicine Research Program