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.