Table 3.
Correlation coefficients between QEI, QMT, functional, and strength tests (n = 45)
| QEI | QMT | 30SS | UGS | MIVC | HS | ||
|---|---|---|---|---|---|---|---|
| QEI (A.u.) | – | −0.572** | −0.493** | −0.270 | −0.409** | −0.334* | |
| QMT (A.u.) | – | 0.136 | 0.153 | 0.509** | 0.526** | ||
| 30SS (reps) | – | 0.498** | 0.247 | 0.308* | |||
| UGS (s) | – | 0.247 | 0.456** | ||||
| MIVC (N.m) | – | 0.516** |
QEI quadriceps femoris echo intensity, QMT quadriceps femoris muscle thickness, 30SS 30-s sit-to-stand-up test, UGS usual gait speed, MIVC maximal isometric voluntary contraction, HS handgrip strength
*P < 0.05; **P < 0.01 (statistical difference)