Animal study · Supplements / medicine · 1 Oct 2026
Endurance training changed liver energy proteins differently in female and male rats; both sexes had less liver fat
Source: University of Missouri / Cell Reports
What the research found
Study (rats). Scott Rector and colleagues at the University of Missouri School of Medicine report in Cell Reports (2026; DOI 10.1016/j.celrep.2026.117416; MedicalXpress 1 October 2026), from the MoTrPAC endurance-exercise dataset. Female rats made more proteins in the Krebs cycle, the mitochondrial pathway that produces cellular energy. Male rats more often remodeled existing proteins by a chemical change that triggers that cycle. Rector said neither pattern is a better adaptation. In both sexes, training lined up with less liver fat, better cholesterol use and disposal, and fewer fibrosis markers. Males appeared to expel more cholesterol than females. The release does not give the number of animals. The authors say the sex difference might later matter for metabolic dysfunction-associated steatotic liver disease, and that why the pathways differ is still unknown. These are rat findings, not a human training result. Educational notes.
Evidence level: Animal study. Results in animals or cells often don't carry over to people.
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