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. Author manuscript; available in PMC: 2013 Aug 1.
Published in final edited form as: Exp Gerontol. 2012 May 14;47(8):601–607. doi: 10.1016/j.exger.2012.05.007

Table 1. Vastus Lateralis.

Muscle Fiber Cross-sectional Area in Young and Old Monkeys

Monkeys CSA (μm2)
TYPE I TYPE IIX/B TYPE IIA
Young (n=3) 2106 ± 251 2974 ± 167 b 6409 ± 172 b,c
Old (n=3) 1483 ± 33a 2060 ± 327 a,b 3975 ± 382 a,b,c
Percentage of change −30% −31% −38%

CSA, cross-sectional area; VL, vastus lateralis

Values are means ± standard deviation

a

Significant difference (P < 0.05) vs young;

b

Significant difference (P < 0.05) vs type I;

c

Significant difference (P < 0.05) vs type IIB/X