Skeletal muscle memory: implications for sports, aging and nutrition.
Level 5 - mechanism / opinion, no new human data
Narrative review of mechanisms and nutritional strategies with no original human data or systematic synthesis.
PubMed 41346689 · doi:10.3389/fnut.2025.1701520
What was done
This narrative review summarizes current evidence on skeletal muscle cellular memory, focusing on the role of satellite cell-mediated myonuclear accretion, myonuclear permanence versus loss, the impact of aging on these processes, and the potential utility of exercise and nutritional strategies (including protein, amino acids, polyphenols, and creatine) to promote muscle regain.
What was found
The abstract reports no quantitative data or numerical effect sizes. It qualitatively reports that human evidence supports the requirement of myonuclear accretion via satellite cells for extensive hypertrophy. However, whether accrued myonuclei persist indefinitely or are eliminated during detraining remains unclear, and mechanisms of potential loss remain speculative. Aging appears to impair both satellite cell recruitment and potentially myonuclear retention.
Why it matters
Understanding the cellular mechanisms of muscle memory can help optimize training, rehabilitation protocols, and nutritional countermeasures for age-related sarcopenia and recovery from disuse or injury.
Limits
As a narrative review, it lacks a systematic search protocol or quantitative pooling of data. Key mechanistic aspects, such as the long-term permanence of myonuclei in humans and the precise clinical efficacy of proposed nutritional interventions, remain speculative or unproven.
Cited by
- context Muscle memory is mediated in part by myonuclei donated from satellite cells that fuse into muscle fibers and remain permanently.