Table 5.
Pooled univariate linear regression analyses for native peak T1 values of skeletal calf muscle compartments with clinical markers of peripheral artery disease.
| Independent Variables | n | β | Standard Error | R2 | Adjusted r2 | p-Value | |
|---|---|---|---|---|---|---|---|
| Native peak T1 of AM (ms) | Resting ABI | 37 | −0.276 | −73.6 | 0.08 | 0.05 | 0.10 |
| Δ ABI | 36 | 0.201 | 237.4 | 0.04 | 0.01 | 0.24 | |
| Claudication onset time (s) | 36 | 0.083 | 0.159 | 0.01 | −0.02 | 0.63 | |
| Peak walking time (s) | 36 | −0.354 | −0.893 | 0.13 | 0.10 | 0.03 | |
| Body mass index (kg/m2) | 37 | 0.153 | 5.79 | 0.02 | −0.01 | 0.37 | |
| eGFR (mL/min/1.73 m2) | 31 | −0.152 | −1.33 | 0.02 | −0.01 | 0.42 | |
| Native peak T1 of LM (ms) | Resting ABI | 37 | −0.359 | −120.2 | 0.13 | 0.10 | 0.029 |
| Δ ABI | 36 | 0.277 | 258.7 | 0.08 | 0.05 | 0.10 | |
| Claudication onset time (s) | 36 | 0.344 | 0.517 | 0.12 | 0.09 | 0.040 | |
| Peak walking time (s) | 36 | −0.141 | −0.281 | 0.02 | −0.01 | 0.41 | |
| Body mass index (kg/m2) | 37 | 0.166 | 4.87 | 0.03 | 0.00 | 0.33 | |
| eGFR (mL/min/1.73 m2) | 31 | 0.049 | 0.347 | 0.002 | −0.03 | 0.79 | |
| Native peak T1 of DM (ms) | Resting ABI | 37 | −0.102 | −26.2 | 0.01 | −0.02 | 0.55 |
| Δ ABI | 36 | 0.216 | 240.8 | 0.05 | 0.02 | 0.21 | |
| Claudication onset time (s) | 36 | −0.026 | −0.046 | 0.00 | −0.03 | 0.88 | |
| Peak walking time (s) | 36 | −0.199 | −0.472 | 0.04 | 0.01 | 0.25 | |
| Body mass index (kg/m2) | 37 | 0.110 | 3.85 | 0.01 | −0.02 | 0.52 | |
| eGFR (mL/min/1.73 m2) | 31 | 0.011 | 0.093 | 0.00 | −0.03 | 0.95 | |
| Native peak T1 of SM (ms) | Resting ABI | 37 | −0.141 | −59.9 | 0.02 | −0.01 | 0.41 |
| Δ ABI | 36 | 0.192 | 153.0 | 0.04 | 0.01 | 0.26 | |
| Claudication onset time (s) | 36 | 0.122 | 0.156 | 0.02 | −0.01 | 0.48 | |
| Peak walking time (s) | 36 | −0.233 | −0.395 | 0.05 | 0.03 | 0.17 | |
| Body mass index (kg/m2) | 37 | −0.071 | −1.78 | 0.01 | −0.02 | 0.68 | |
| eGFR (mL/min/1.73 m2) | 31 | −0.144 | 0.902 | 0.02 | −0.01 | 0.44 | |
| Native peak T1 of GM (ms) | Resting ABI | 37 | −0.199 | −75.8 | 0.04 | 0.01 | 0.24 |
| Δ ABI | 36 | 0.185 | 131.7 | 0.03 | 0.01 | 0.28 | |
| Claudication onset time (s) | 36 | 0.024 | 0.027 | 0.001 | −0.03 | 0.89 | |
| Peak walking time (s) | 36 | −0.091 | −0.139 | 0.01 | −0.02 | 0.60 | |
| Body mass index (kg/m2) | 37 | 0.353 | 7.94 | 0.12 | 0.10 | 0.032 | |
| eGFR (mL/min/1.73 m2) | 31 | 0.131 | 0.672 | 0.02 | −0.02 | 0.48 |
ABI: ankle–brachial index; Δ ABI: difference between resting ABI and post-treadmill walking ABI; eGFR: estimated glomerular filtration rate; ms: milliseconds. AM: anterior muscle group. LM: lateral muscle group. DM: deep muscle group. SM: soleus muscle. GM: gastrocnemius muscle.