Table 1.
Psychological and physiological variables frequently used to assess mental fatigue.
| Measure | Pre-RVP | Post-RVP | Change (%) | p-Value | ES |
|---|---|---|---|---|---|
| Mental fatigue sensation (a.u.) | 23.3 ± 21.8 (14.8; 31.8) | 51.4 ± 28.6 (40.4; 62.5) |
120.9 ± 31.0 (109.4; 132.4) |
<0.001 | 1.09 |
| Motivation (a.u.) |
7.0 ± 2.5 (6.0; 8.0) |
6.5 ± 2.7 (5.5; 7.5) |
−7.1 ± 5.4 (−9.2; −5.1) |
0.020 | 0.19 |
| Emotional arousal (a.u.) |
6.0 ± 2.2 (5.1; 6.8) |
5.0 ± 2.3 (4.1; 5.9) |
−16.2 ± 8.0 (−19.1; −13.2) |
0.001 | 0.42 |
| Total mood disturbance (a.u.) | 101.5 ± 10.3 (97.6; 105.5) | 105.1 ± 13.0 (100.1; 110.1) | 3.5 ± 26.5 (−6.3; 13.3) |
0.038 | 0.43 |
| EEG theta band (dB/Hz) |
55.2 ± 39.8 (40.5; 71.4) | 89.0 ± 67.7 (62.7; 115.2) |
59.1 ± 69.9 (33.2; 85.0) |
<0.001 | 0.47 |
| EEG alpha band (dB/Hz) |
130.3 ± 135.2 (77.9; 182.7) | 167.4 ± 117.2 (122.0; 212.9) | 28.5 ± 13.3 (23.6; 33.4) |
0.055 | 0.29 |
Values are the mean ± SD (CI95%); CI95% is 95% confidence interval; RVP is the rapid visual information processing (the mental fatigue test); ES is effect size (d = tc2 (1 − r) n); EEG is electroencephalography; and EEG measured at Fp1 (prefrontal cortex).