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Starlight Longevity

Ageing biology, biomarkers, interventions, and research literacy.

Sarcopenia

Definition

Sarcopenia was originally introduced to describe age-related loss of skeletal muscle mass, but current frameworks define it as a progressive muscle disorder that includes declines in strength and physical performance, not only reduced mass. [1] [2] [3]

Why It Matters in Ageing Research

Sarcopenia matters because muscle weakness and reduced physical performance are strongly linked to frailty, falls, disability, and loss of independence in later life. In ageing research, the term helps focus attention on functional muscle decline rather than muscle size alone. [3] [8] [9]

Common Confusion

Related Reading

References

  1. Rosenberg, I. H. "Sarcopenia: Origins and clinical relevance." Journal of Nutrition (1997). https://pubmed.ncbi.nlm.nih.gov/9164280/
  2. Cruz-Jentoft, A. J. et al. "Sarcopenia: European consensus on definition and diagnosis." Age and Ageing (2010). https://pmc.ncbi.nlm.nih.gov/articles/PMC4066461/
  3. Cruz-Jentoft, A. J. et al. "Sarcopenia: Revised European consensus on definition and diagnosis (EWGSOP2)." Age and Ageing (2019). https://pmc.ncbi.nlm.nih.gov/articles/PMC6322506/
  4. Chen, L.-K. et al. "Asian Working Group for Sarcopenia: 2019 Consensus Update on Sarcopenia Diagnosis and Treatment." Journal of the American Medical Directors Association (2020). https://pubmed.ncbi.nlm.nih.gov/32033882/
  5. Bhasin, S. et al. "Sarcopenia Definition: The Position Statements of the Sarcopenia Definition and Outcomes Consortium." Journal of the American Geriatrics Society (2020). https://pubmed.ncbi.nlm.nih.gov/31990347/
  6. Larsson, L. et al. "Sarcopenia: Aging-Related Loss of Muscle Mass and Function." Physiological Reviews (2019). https://pmc.ncbi.nlm.nih.gov/articles/PMC6442923/
  7. Beaudart, C. et al. "Health Outcomes of Sarcopenia: A Systematic Review and Meta-Analysis." PLoS ONE (2017). https://pmc.ncbi.nlm.nih.gov/articles/PMC5240970/
Note

This glossary entry is provided for educational purposes only and does not constitute medical advice.