Table 4.
Correlation between thickness change ratio and inspiratory muscle function.
| Stroke patients (n=45) | Healthy subjects (n=49) | |||||||
|---|---|---|---|---|---|---|---|---|
| MIP | PIF | VC | IME | MIP | PIF | VC | IME | |
| Change in thickness |
r=0.565 p<0.001 |
r=0.125 p>0.05 |
r=−0.135 p>0.05 |
r=0.262 p>0.05 |
r=0.315 p<0.05 |
r=0.342 p<0.05 |
r=0.307 p<0.05 |
r=0.030 p>0.05 |
| MIP |
r=0.235 p>0.05 |
r=−0.135 p>0.05 |
r=0.769 p<0.001 |
r=0.140 p>0.05 |
r=0.201 p>0.05 |
r=0.073 p>0.05 |
||
| PIF |
r=−0.016 p>0.05 |
r=0.214 p>0.05 |
r=0.217 p>0.05 |
r=0.164 p>0.05 |
||||
| VC |
r=−0.058 p>0.05 |
r=−0.124 p>0.05 |
||||||
Thickness change ratio is the ratio of diaphragm thickness at end expiration to the diaphragm thickness at TLC. TLC – total lung capacity; MIP – maximal inspiratory pressure; PIF – peak inspiratory flow; VC – vital capacity; IME – inspiratory muscle endurance.