Muscle characteristics change with aging

Physiological

Data Availability

22 to 93 years

Tissue

  • muscle Changes ⇩

References

  • Haus, JM et al. (2007) "Collagen, cross-linking, and advanced glycation end products in aging human skeletal muscle." J. Appl. Physiol. 103(6):2068-2076 (PubMed)
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External Links

Description

Study of young (22-30 years old; mean 25) and old (70-93 years old; mean 78) healthy sedentary individuals showed that quadriceps muscle volume reduces by 29% with aging, while cross sectional area follows the same trend and is reduced by 23%. Peak isometric force of the quadriceps is also reduced by 35%, and Peak isometric force normalized to muscle size is reduced by 17%. Similarly, peak power of the quadriceps is reduced by 48%, and peak power normalized to muscle cross sectional area is reduced by 33%. Additionally, stair climb, chair rise, and walk times increase by 45-80%, and stair climbing power is reduced by 40% with aging. Quadriceps maximal shortening velocity reduces by 23%.