Research
Mixed
Longitudinal analysis of aging men shows no significant age-associated decline in muscle quality (strength per unit mass) when measured over 10-25 years, contrasting with cross-sectional findings.
For individuals tracking their own muscle health over decades, strength per unit of muscle mass may remain stable, contradicting the pessimistic trends often cited from cross-sectional population studies. Consistent strength maintenance is possible over time.
GoodRefutesHIGH confidence
No age-associated arm muscle quality declines were observed longitudinally using CREAT or CSA.
Why this rating
Longitudinal data from 412 men followed for 10-25 years provides robust evidence for individual trajectories.
Source
Muscle Quality and Age: Cross-Sectional and Longitudinal Comparisons
E. Jeffrey Metter et al. · The Journals of Gerontology Series A · 1999
DOI 10.1093/gerona/54.5.b207
cross_sectionalCited 238×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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