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. 2023 Sep 14;135(6):1403–1414. doi: 10.1152/japplphysiol.00441.2023

Table 1.

Outcome measures for baseline muscle samples for damaged and nondamaged groups

Baseline Mean ± SD
P Value
Muscle Sample Characteristics Nondamaged, n = 10 Damaged, n = 16 Between Group
Muscle phenotype (CSA and distribution)
 Mean fiber CSA, µm2 4,598.01 ± 738.79 4,103.86 ± 845.17 0.13
 Type 1 fiber CSA, µm2 4,549.63 ± 802.56 3,858.34 ± 730.22 0.04*
 Type 2a fiber CSA, µm2 4,659.04 ± 1,212.77 4,454.00 ± 1,093.99 0.67
 Type 2a/x fiber CSA, µm2 3,901.71 ± 668.10 3,770.16 ± 1040.07 0.75
 Type 1 fiber frequency, % 50.57 ± 18.43 46.74 ± 11.93 0.57
 Type 2a fiber frequency, % 47.22 ± 18.31 49.29 ± 11.85 0.76
 Type 2a/x fiber frequency, % 2.22 ± 2.46 4.17 ± 7.33 0.35
Satellite cell content (SC)
 SC/fiber 0.08 ± 0.04 0.07 ± 0.03 0.37
Total collagen content
 PSR/total area (%) 5.53 ± 1.52 5.15 ± 1.33 0.53
Fractional synthesis rate (FSR)
 Protein synthesis, % per day 2.18 ± 1.14 2.04 ± 1.68 0.80
 RNA synthesis, % per day 0.03 ± 0.05 0.04 ± 0.05 0.58

CSA, cross-sectional area; PSR, Picrosirius red. *Significantly different between groups.