Key result
Mitochondrial DNA copy number (mtDNA-CN) requires careful methodological and interpretive considerations when evaluated as a marker of physical performance and frailty.
Design
Editorial
The article discusses methodological and interpretive considerations for evaluating mtDNA-CN as a marker of physical performance and frailty.
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Tong Liu (2026) studied this question. Mitochondrial DNA copy number (mtDNA-CN) requires careful methodological and interpretive considerations when evaluated as a marker of physical performance and frailty.
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