Table 2.
Control | Cognitive fatigue | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Initial | 2nd | 3rd | 4th | Exhaustion | Initial | 2nd | 3rd | 4th | Exhaustion | ||
EMG RMS of FCR (% MVC)* | Mean | 23.99 | 23.35 | 24.73 | 27.21 | 30.12 | 19.09 | 19.79 | 18.72 | 21.39 | 21.25 |
SD | 9.74 | 13.24 | 12.26 | 12.04 | 11.22 | 9.34 | 10.93 | 12.47 | 11.20 | 12.28 | |
EMG RMS of ECR (% MVC) | Mean | 41.33 | 42.82 | 40.82 | 44.34 | 44.50 | 33.56 | 32.11 | 30.51 | 33.51 | 34.44 |
SD | 15.45 | 18.23 | 16.63 | 18.62 | 18.40 | 11.60 | 11.58 | 12.95 | 13.77 | 13.36 | |
EMG mPF of FCR | Mean | 130.33 | 130.51 | 130.31 | 128.46 | 126.24 | 125.80 | 133.54 | 130.85 | 130.58 | 129.87 |
SD | 16.72 | 19.55 | 19.46 | 13.18 | 24.69 | 34.72 | 26.85 | 26.36 | 26.14 | 26.50 | |
EMG mPF of ECR | Mean | 178.86 | 177.62 | 178.03 | 177.52 | 178.18 | 177.84 | 176.18 | 178.51 | 179.26 | 179.10 |
SD | 11.94 | 11.36 | 9.00 | 9.79 | 10.95 | 11.27 | 11.89 | 8.94 | 10.53 | 11.70 | |
Force fluctuations (%)* | Mean | 4.63 | 3.59 | 3.41 | 4.37 | 4.58 | 4.20 | 3.95 | 3.01 | 3.35 | 5.69 |
SD | 2.30 | 1.39 | 1.52 | 2.38 | 2.66 | 2.37 | 2.82 | 0.96 | 1.23 | 4.21 | |
HR (bpm) | Mean | 84.49 | 84.02 | 82.72 | 91.45 | 83.26 | 83.56 | 82.72 | 85.98 | 84.45 | 84.19 |
SD | 25.21 | 20.00 | 16.42 | 19.31 | 14.80 | 22.93 | 18.75 | 28.02 | 27.35 | 21.95 | |
HRV LF/HF | Mean | 0.42 | 0.42 | 0.42 | 0.42 | 0.42 | 0.42 | 0.42 | 0.42 | 0.42 | 0.42 |
SD | 0.003 | 0.002 | 0.002 | 0.006 | 0.002 | 0.002 | 0.005 | 0.006 | 0.003 | 0.003 |
*denotes a main effect (p < 0.05) of time