Table 2.
Calf Muscle Metrics From Dynamic Blood Oxygenation Level‐Dependent MRI After Exercise in Healthy Control Subjects and Peripheral Artery Disease Patients
| Healthy control subjects (n = 15) | Peripheral artery disease patients (n = 13) | |
|---|---|---|
| Gastrocnemius muscle | ||
| end‐exercise deoxygenation (%) | 1.9 ± 2.6 | 2.2 ± 2.1 |
| hyperemia (n) [%] | 7/15 [47%] | 8/13 [62%] |
| amplitude (%) | –1.4 ± 0.3 | –3.8 ± 1.4*** |
| time‐to‐peak (s) | 186 ± 80 | 128 ± 30 |
| end‐recovery R2* (s−1) | 0.045 ± 0.007 | 0.042 ± 0.005 |
| Soleus muscle | ||
| end‐exercise deoxygenation (%) | 1.5 ± 2.4 | 2.3 ± 2.9 |
| hyperemia (n) | 7/15 [47%] | 5/13 [38%] |
| amplitude (%) | –2.2 ± 1.3 | –1.6 ± 0.2 |
| time‐to‐peak (s) | 250 ± 139 | 189 ± 114 |
| end‐recovery R2* (s−1) | 0.045 ± 0.008 | 0.044 ± 0.004 |
***
P < 0.001 vs. healthy control subjects (two‐sided Mann–Whitney U‐test).