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. Author manuscript; available in PMC: 2010 Jul 12.
Published in final edited form as: J Gerontol A Biol Sci Med Sci. 2008 Sep;63(9):921–927. doi: 10.1093/gerona/63.9.921

Figure 2.

Figure 2

Muscle cross-sectional area (CSA) changes with age. Muscle CSA (mm2) at the midbelly of quadriceps muscles was measured at the specified ages. Within like-colored bars, different letters indicate a significant difference (p < .05).