Table 2.
Frontal electrodes power (mean (SD)) in the brain oscillatory bands at the four measurements (T1–T4) and intervention effects.
| Bands | T1 | T2 | T3 | T4 | RMA Significance | T1 vs. T3 Comparison | T2 vs. T3 Comparison | T1 vs. T4 Comparison | T2 vs. T4 Comparison | T3 vs. T4 Comparison | T2 vs. T3 Cohen’s d | T2 vs. T4 Cohen’s d |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| F | p | p | p | p | p | p | |||||||
| Delta (1–4 Hz) |
16.06 (9.02) |
19.36 (17.48) |
16.08 (9.75) |
25.19 (15.21) |
4.56 | 0.01 | >0.05 | >0.05 | 0.019 | >0.05 | 0.019 | 0.29 | 0.801 |
| Theta (4–8 Hz) |
5.08 (3.00) |
4.87 (2.43) |
5.38 (3.16) |
8.40 (3.65) |
7.12 | <0.001 | >0.05 | >0.05 | 0.005 | 0.003 | 0.012 | 0.51 | 1.126 |
| Alpha (8–12 Hz) |
11.93 (9.44) |
11.60 (8.11) |
12.27 (10.31) |
12.03 (7.60) |
>0.05 | 0.43 | 0.14 | ||||||
| Beta (12–30 Hz) |
2.28 (1.06) |
2.25 (0.80) |
2.30 (1.06) |
5.82 (5.16) |
3.63 | 0.02 | >0.05 | >0.05 | 0.056 | 0.064 | 0.058 | 0.42 | 0.684 |
| Gamma (>30 Hz) |
0.16 (0.04) |
0.14 (0.05) |
0.15 (0.07) |
1.42 (2.05) |
3.32 | 0.03 | >0.05 | >0.05 | 0.073 | 0.084 | 0.071 | 0.019 | 0.637 |
T1—baseline; T2—pre-intervention; T3—post-intervention; T4—follow-up; SD—standard deviation; Hz—hertz; RMA—repeated measures ANOVA; p values higher than 0.09 are presented as >0.05.