TABLE 1.
Neuromuscular function for each distance at pre-exercise; at the end of TT; and after 1, 2, 4, and 8 min of recovery.
| Parameter | TT (min) | Pre-exercise | End of TT |
Recovery |
|||
| 1 min | 2 min | 4 min | 8 min | ||||
| MVC (N) | 3 | 825 ± 147 | 555 ± 113**** | 659 ± 155 | 686 ± 165 | 721 ± 169 | 749 ± 165 |
| 10 | 794 ± 153## | 504 ± 91****## | 627 ± 135 | 660 ± 128 | 696 ± 138 | 721 ± 146 | |
| 40 | 801 ± 153# | 522 ± 116****# | 669 ± 134 | 681 ± 135 | 702 ± 118 | 738 ± 130 | |
| MVC RMS⋅M–1 VL + VM | 3 | 0.074 ± 0.012 | 0.086 ± 0.027 | 0.073 ± 0.013 | 0.068 ± 0.012 | 0.068 ± 0.01 | 0.079 ± 0.017 |
| 10 | 0.075 ± 0.012 | 0.082 ± 0.022 | 0.075 ± 0.021 | 0.072 ± 0.011 | 0.069 ± 0.012 | 0.079 ± 0.012 | |
| 40 | 0.082 ± 0.019 | 0.072 ± 0.016*# | 0.08 ± 0.022 | 0.073 ± 0.012 | 0.068 ± 0.009 | 0.073 ± 0.015 | |
| SS (N) | 3 | 195 ± 49 | 85 ± 2**** | 147 ± 30 | 167 ± 36 | 164 ± 37 | 147 ± 35 |
| 10 | 189 ± 46 | 80 ± 24**** | 131 ± 22 | 138 ± 25 | 136 ± 24 | 126 ± 25 | |
| 40 | 191 ± 42 | 78 ± 30**** | 129 ± 27 | 130 ± 27 | 124 ± 27 | 116 ± 25 | |
| PS10 (N) | 3 | 310 ± 67 | 135 ± 44**** | 222 ± 49 | 256 ± 56 | 253 ± 60 | 229 ± 58 |
| 10 | 299 ± 64 | 125 ± 37**** | 194 ± 33 | 205 ± 40 | 197 ± 37 | 181 ± 39 | |
| 40 | 303 ± 62 | 120 ± 51**** | 179 ± 47 | 184 ± 50 | 173 ± 49 | 163 ± 43 | |
| PS100 (N) | 3 | 298 ± 67 | 185 ± 40**** | 247 ± 49 | 263 ± 54 | 262 ± 57 | 248 ± 57 |
| 10 | 290 ± 60 | 176 ± 27*** | 233 ± 35 | 237 ± 38 | 232 ± 38 | 224 ± 42 | |
| 40 | 296 ± 59 | 167 ± 37**** | 226 ± 37 | 225 ± 37 | 219 ± 39 | 217 ± 40 | |
| FPS10/FPS100 | 3 | 1.05 ± 0.10 | 0.72 ± 0.14**** | 0.90 ± 0.13 | 0.98 ± 0.12 | 0.97 ± 0.12 | 0.93 ± 0.14 |
| 10 | 1.03 ± 0.08 | 0.71 ± 0.16**** | 0.84 ± 0.12 | 0.97 ± 0.14 | 0.86 ± 0.14 | 0.81 ± 0.14 | |
| 40 | 1.03 ± 0.09 | 0.70 ± 0.18**** | 0.79 ± 0.15 | 0.81 ± 0.15 | 0.78 ± 0.15 | 0.75 ± 0.13 | |
| PPA VL + VM (mV) | 3 | 3.95 ± 0.32 | 4.13 ± 0.24* | 4.16 ± 0.28 | 4.17 ± 0.27 | 4.00 ± 0.26 | 3.78 ± 0.23 |
| 10 | 4.01 ± 0.35 | 3.71 ± 0.34# | 3.86 ± 0.31 | 3.84 ± 0.29 | 3.69 ± 0.31 | 3.56 ± 0.35 | |
| 40 | 3.94 ± 0.24 | 3.35 ± 0.42***#$ | 3.46 ± 0.47 | 3.41 ± 0.49 | 3.33 ± 0.48 | 3.31 ± 0.49 | |
Values are expressed in absolute units ± SD (n = 12, except n = 11 for MVC RMS⋅M–1 and PPA). MVC, maximal voluntary contraction; RMS, root mean square; M, M-wave; VL, vastus lateralis; VM, vastus medialis; SS, single stimulus; PS10, paired stimuli at 10 Hz; PS100, paired stimuli at 100 Hz; FPS10/FPS100, ratio of force for PS10 vs. PS100; PPA, peak-to-peak amplitude of the M-wave; TT, time trial. *Different from respective pre-exercise. #Different from 3-min TT. $Different from 10-min TT. The number of symbols indicate significance at *P < 0.05; ***P < 0.001; ****P < 0.0001. Comparisons are presented for pre-exercise and end of TT only.