Table 3. Interactions, main effects of condition and group with post hoc comparisons for migration of center of pressure for the slow and fast components during three conditions of quiet standing on a force platform on a firm surface with and without vision, and on a compliant surface with vision.
| Variable | Group*Condition | Condition | Group | Post hoc | |
|---|---|---|---|---|---|
| Slow component | Amp. AP | F(3.5,124.5) = 1.27 η2p = 0.034 |
F(1.7,124.5)
= 88.43 η2p = 0.551 |
F(2,72)
= 6.82 η2p = 0.159 |
CG-CFS CG-FM |
| Amp. ML | F(2.9,104.1) = 1.83 η2p = 0.032 |
F(1.4,104.1)
= 207.60 η2p = 0.742 |
F(2,72)
= 4.91 η2p = 0.12 |
CG-CFS | |
| F. AP | F(4,144) = 0.961 η2p = 0.026 |
F(2,144) = 0.005 η2p = 0.001 |
F(2,72)
= 25.22 η2p = 0.41 |
CG-CFS CG-FM |
|
| F. ML | F(4,144) = 1.69 η2p = 0.045 |
F(2,144)
= 8.07 η2p = 0.101 |
F(2,72)
= 14.74 η2p = 0.29 |
CG-CFS CG-FM |
|
| Fast component | Amp. AP | F(2.9,104.4) = 0.47 η2p = 0.013 |
F(1.4,104.4)
= 99.02 η2p = 0.579 |
F(2,72)
= 4.9 η2p = 0.12 |
CG-CFS CG-FM |
| Amp. ML |
F(2.7,96.8)
= 6.29 η2p = 0.149 |
F(1.3,96.8)
= 142.50 η2p = 0.664 |
F(2,72)
= 7.91 ηp2 = 0.18 |
CG-CFS CG-FM |
|
| F. AP | F(4,144) = 0.82 η2p = 0.022 |
F(2,144) = 2.95 η2p = 0.039 |
F(2,72)
= 8.72 η2p = 0.195 |
CG-CFS CG-FM |
|
| F. ML | F(4,144) = 0.78 η2p = 0.021 |
F(2,144) = 2.86 η2p = 0.038 |
F(2,72)
= 3.73 η2p = 0.09 |
CG-FM |
Amp: Amplitude (mm), F: Frequency (Hz), AP: Antero-posterior, ML: Medio-lateral. CFS: Chronic Fatigue Syndrome, FM: Fibromyalgia, CG: Control group. Bold text = significant. Post hoc: only significant comparisons are listed. Effect size: η2p (small = 0.01; medium = 0.06; large = 0.14).