Table 3. Comparison of p values for aEMG between LBP and Controls at each percentage of HAT (head, arms, trunk segment).
| %HAT |
LBP vs. Control |
Between groups at each %HAT |
|
|
100% |
120% |
140% |
160% |
| Left ULES |
.355 |
.112 |
.235 |
1.128 |
.926 |
| Effect size |
|
.86 |
1.26 |
.77 |
.04 |
| Right ULES |
.088 |
.283 |
.648 |
.009* |
.703 |
| Effect size |
|
.47 |
.23 |
1.16 |
.31 |
| Left LLES |
.095 |
.161 |
.607 |
.744 |
.071 |
| Effect size |
|
.70 |
.41 |
.12 |
.87 |
| Right LLES |
.118 |
.251 |
.737 |
.186 |
.402 |
| Effect size |
|
.60 |
.20 |
.77 |
.42 |
| Left biceps femoris |
.312 |
.333 |
.345 |
.028* |
.965 |
| Effect size |
|
.77 |
1.42 |
3.06 |
.03 |
| Right biceps femoris |
.269 |
.636 |
.05* |
.018* |
.336 |
| Effect size |
|
.23 |
1.35 |
3.55 |
.40 |
Effect sizes are included with the following descriptors: <0.4: small effect, 0.4- 0.7: moderate effect, >0.7: large effect. LBP: Low back pain. ULES: Upper lumbar erector spinae. LLES: Lower lumbar erector spinae.* p ≤ 0.05.
