MyHC Muscle Fibre Types1 | ||||||
---|---|---|---|---|---|---|
Variable | I | I+IIA | IIA | IIAX | IIX | |
CSA (μm2) | FD | 3246 ± 79 b | 3172 ± 241 b | 3962 ± 160 c | 2422 ± 235 a | |
PM | 2086 ± 102 a | 1806 ± 197 a | 2157 ± 136 a | 2459 ± 226 a | 3692 ± 154 b | |
Capillaries (n) | FD | 4.11 ± 0.11 a | 3.59 ± 0.24 a | 3.98 ± 0.13 a | 3.09 ± 0.37 a | |
PM | 3.71 ± 0.14 c | 3.94 ± 0.36 c | 3.24 ± 0.17 bc | 2.74 ± 0.27 ab | 2.60 ± 0.13 a | |
Capillaries (n 103/μm2) | FD | 1.37 ± 0.04 b | 1.20 ± 0.10 ab | 1.10 ± 0.04 a | 1.56 ± 0.32 ab | |
PM | 2.36 ± 0.15 c | 2.53 ± 0.30 c | 1.84 ± 0.12 b | 1.58 ± 0.21 b | 0.90 ± 0.06 a | |
Nuclei (n) | FD | 11.32 ± 0.35 b | 9.68 ± 0.82 b | 11.16 ± 0.62 b | 9.70 ± 1.33 b | |
PM | 6.22 ± 0.29 a | 5.84 ± 0.65 a | 5.79 ± 0.35 a | 4.61 ± 0.40 a | 5.71 ± 0.30 a | |
Nuclei (n 103/μm2) | FD | 3.82 ± 0.19 ab | 3.24 ± 0.26 ab | 3.07 ± 0.14 ab | 3.99 ± 0.42 ab | |
PM | 3.82 ± 0.26 b | 4.01 ± 0.47 b | 3.39 ± 0.19 ab | 2.49 ± 0.29 a | 1.93 ± 0.13 a |