Table 3.
Mean and Standard Deviations for the Diffusion Parameters, Per Muscle, Per Timepoint
| Muscle | Timepoint | λ1 (mm2/sec) | λ2 (mm2 /sec) | λ3 (mm2 /sec) | MD (mm2 /sec) | FA(‐) | RD (mm2 /sec) | Perfusion fraction (%) | Water T2 values (msec) |
|---|---|---|---|---|---|---|---|---|---|
| Hamstrings | |||||||||
| BFS | 1 | 1.96 ± 0.09 | 1.47 ± 0.09 | 1.26 ± 0.05 | 1.56 ± 0.06 | 0.23 ± 0.03 | 1.36 ± 0.07 | 0.042 ± 0.02 | 30.6 ± 1.2 |
| 2 | 1.96 ± 0.13 | 1.43 ± 0.1 | 1.25 ± 0.1 | 1.55 ± 0.1 | 0.23 ± 0.02 | 1.34 ± 0.1 | 0.043 ± 0.01 | 30.7 ± 1.1 | |
| 3 | 1.93 ± 0.14 | 1.42 ± 0.09 | 1.25 ± 0.08 | 1.54 ± 0.08 | 0.23 ± 0.03 | 1.33 ± 0.08 | 0.037 ± 0.02 | 30.2 ± 1.2 | |
| BFL | 1 | 1.97 ± 0.08 | 1.54 ± 0.05 | 1.33 ± 0.05 | 1.62 ± 0.05 | 0.20 ± 0.03 | 1.44 ± 0.04 | 0.03 ± 0.01 | 30.2 ± 1.1 |
| 2 | 1.99 ± 0.07 | 1.56 ± 0.05 | 1.37 ± 0.06 #* | 1.64 ± 0.04 #* | 0.19 ± 0.02 | 1.47 ± 0.04 #* | 0.024 ± 0.004 | 30.05 ± 0.8 | |
| 3 | 1.95 ± 0.07 | 1.52 ± 0.04 | 1.35 ± 0.05 | 1.61 ± 0.04 | 0.19 ± 0.03 | 1.43 ± 0.04 | 0.024 ± 0.01 | 29.8 ± 0.8 | |
| ST | 1 | 1.99 ± 0.06 | 1.50 ± 0.06 | 1.41 ± 0.05 | 1.62 ± 0.05 | 0.21 ± 0.02 | 1.43 ± 0.05 | 0.03 ± 0.01 | 29.1 ± 1.1 |
| 2 | 2.04 ± 0.06 | 1.54 ± 0.05 | 1.37 ± 0.04 #* | 1.66 ± 0.05 #* | 0.20 ± 0.01 | 1.47 ± 0.05#* | 0.03 ± 0.01 | 29.1 ± 1.3 | |
| 3 | 1.99 ± 0.07 | 1.50 ± 0.05 | 1.36 ± 0.05 | 1.63 ± 0.04 | 0.20 ± 0.02 | 1.44 ± 0.05 | 0.03 ± 0.01 | 28.7 ± 0.9 | |
| SM | 1 | 1.86 ± 0.06 | 1.48 ± 0.06 | 1.31 ± 0.04 | 1.55 ± 0.05 | 0.18 ± 0.02 | 1.40 ± 0.05 | 0.039 ± 0.01 | 30.1 ± 1.1 |
| 2 | 1.87 ± 0.05 | 1.48 ± 0.06 | 1.33 ± 0.05 | 1.56 ± 0.05 | 0.19 ± 0.02 | 1.41 ± 0.06 | 0.036 ± 0.01 | 30.0 ± 1.0 | |
| 3 | 1.85 ± 0.07 | 1.48 ± 0.08 | 1.32 ± 0.06 | 1.55 ± 0.06 | 0.18 ± 0.01 | 1.40 ± 0.07 | 0.032 ± 0.01 | 29.9 ± 1.3 | |
| Quadriceps | |||||||||
| VM | 1 | 1.82 ± 0.04 | 1.44 ± 0.05 | 1.29 ± 0.05 | 1.52 ± 0.04 | 0.18 ± 0.02 | 1.37 ± 0.04 | 0.04 ± 0.01 | 30.5 ± 0.9 |
| 2 | 1.84 ± 0.04 | 1.48 ± 0.05 | 1.35 ± 0.04 #* | 1.56 ± 0.03 #* | 0.16 ± 0.02 | 1.41 ± 0.04#* | 0.04 ± 0.004 | 30.4 ± 0.9 | |
| 3 | 1.81 ± 0.06 | 1.46 ± 0.04 | 1.32 ± 0.05 | 1.54 ± 0.04 | 0.17 ± 0.02 | 1.39 ± 0.05 | 0.03 ± 0.01 | 30.4 ± 0.7 | |
| VL | 1 | 1.94 ± 0.05 | 1.56 ± 0.06 | 1.39 ± 0.05 | 1.63 ± 0.05 | 0.17 ± 0.01 | 1.48 ± 0.05 | 0.04 ± 0.01 | 30.4 ± 0.9 |
| 2 | 1.96 ± 0.03 | 1.59 ± 0.04 | 1.43 ± 0.04 #* | 1.65 ± 0.03 #* | 0.16 ± 0.01 | 1.51 ± 0.04 #* | 0.03 ± 0.01 | 30.4 ± 0.9 | |
| 3 | 1.93 ± 0.03 | 1.56 ± 0.05 | 1.39 ± 0.05 | 1.63 ± 0.04 | 0.17 ± 0.02 | 1.47 ± 0.05 | 0.04 ± 0.01 | 30.3 ± 0.6 | |
| VI | 1 | 1.92 ± 0.05 | 1.57 ± 0.05 | 1.38 ± 0.05 | 1.63 ± 0.05 | 0.17 ± 0.02 | 1.48 ± 0.05 | 0.03 ± 0.01 | 30.1 ± 0.8 |
| 2 | 1.94 ± 0.03 | 1.59 ± 0.04 | 1.43 ± 0.05 #* | 1.65 ± 0.03 #* | 0.16 ± 0.02 | 1.51 ± 0.04 #* | 0.03 ± 0.01 | 30.3 ± 0.9 | |
| 3 | 1.91 ± 0.05 | 1.56 ± 0.04 | 1.38 ± 0.05 | 1.62 ± 0.04 | 0.17 ± 0.02 | 1.47 ± 0.04 | 0.03 ± 0.01 | 29.9 ± 0.7 | |
| RF | 1 | 1.83 ± 0.1 | 1.42 ± 0.1 | 1.23 ± 0.09 | 1.50 ± 0.02 | 0.20 ± 0.02 | 1.33 ± 0.09 | 0.04 ± 0.02 | 29.1 ± 0.9 |
| 2 | 1.84 ± 0.1 | 1.46 ± 0.08 | 1.28 ± 0.09 | 1.53 ± 0.09 | 0.19 ± 0.02 | 1.37 ± 0.09 | 0.04 ± 0.01 | 29.0 ± 11 | |
| 3 | 1.84 ± 0.3 | 1.39 ± 0.15 | 1.19 ± 0.2 | 1.47 ± 0.16 | 0.22 ± 0.09 | 1.29 ± 0.16 | 0.04 ± 0.02 | 29.1 ± 0.8 | |
BFS: Biceps Femoris Short Head, BFL: Biceps Femoris Long Head, ST: Semitendinosus, SM: Semimembranosus, VM: Vastus Medialis, VL: Vastus Lateralis, VI: Vastus Intermedius and RF: Rectus Femoris. λ1: First eigenvalue, λ2: Second eigenvalue, λ3 Third eigenvalue. MD: Mean Diffusivity, FA: Fractional Anisotropy, RD: Radial Diffusivity. Differences between baseline and postmarathon are indicated with an asterisk (*). Differences between postmarathon and follow‐up are indicated with a number sign (#).