MOTS-c is a short peptide encoded within mitochondrial DNA. A widely discussed exercise paper contains two different kinds of evidence: researchers administered MOTS-c to mice, and they measured naturally produced MOTS-c after exercise in humans. Keeping those parts separate makes the findings much easier to understand.
What happened in the mouse experiments?
The paper describes improved physical performance in young, middle-aged and old mice, including groups aged 2, 12 and 22 months. It also reports a late-life experiment beginning at 23.5 months, with intermittent treatment three times per week. Those ages and schedules describe the study design. They are not a conversion chart for human treatment.
What happened in the human part?
Exercise increased endogenous MOTS-c expression in skeletal muscle and circulation. Endogenous means produced within the body. This observation is different from giving someone a manufactured peptide and measuring whether their performance improves. The abstract does not establish a human supplementation benefit, an effective dose or long-term safety.
Think of it as two different questions
The animal question was whether an administered material changed performance under a controlled experiment. The human question was whether exercise was associated with a change in a naturally occurring signal. A biological signal can rise during exercise without proving that raising it artificially reproduces exercise. The same distinction applies to many hormones and metabolites.
What should a useful evidence comparison include?
Record the species, age, exercise test and whether the peptide was measured or administered. Then identify what performance actually meant: endurance, running time, strength and daily function are not interchangeable. Compare results within the same kind of test. For laboratory material enquiries, specify the human MOTS-c sequence and required identity records; that label identifies a sequence, not a demonstrated human benefit.
Related materials and next steps
Explore the NHD catalogue records for MOTS-c (Human). Confirm the required molecular form, quantity and lot-document availability before relying on a listing for procurement. A catalogue record does not establish equivalence to a published study material.
Send the product or sequence, quantity and document requirements. For more background, browse the analytical methods guides and research glossary.
Sources and reading scope
Source links checked 5 October 2026. Research summaries use the accessible original abstract unless a full-text source is explicitly identified. Guidance documents and external supplier explanations are technical references, not NHD batch evidence or a claim of regulatory compliance. Any example introduced as hypothetical or teaching is a calculation, not a measured product result.
NHD catalogue materials are for qualified laboratory research, development and manufacturing enquiries. This article does not provide instructions for human or veterinary use.
Sources & editorial method
AI-assisted writing and source checks; conceptual illustrated cover.
1 linked records are listed in the references below. Read the editorial and AI-assistance policy.
How to interpret this article
Study results and labeled examples are separated. Original-source, arithmetic, readability and internal-link checks; no independent human peer review recorded.
Research-use boundary: Catalog materials discussed on this website are for laboratory research, development and manufacturing use only, not for human or veterinary use. This content is not medical advice and does not provide administration instructions.
Primary records and authoritative sources
- Original MOTS-c exercise, aging and muscle-homeostasis studyChecked 2026-10-05; source scope is identified in the article.
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