Table 2.
During TT | Rest | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Pre-TT | 20% | 40% | 60% | 80% | 100% | 1 min | 2 min | 4 min | 8 min | |
SS (N m) | 70 ± 20 | 40 ± 14* | 29 ± 12*† | 27 ± 11*† | 26 ± 10*† | 23 ± 6*† | 33 ± 10* | 39 ± 12*§ | 41 ± 12*§ | 41 ± 12*§ |
PS10 (N m) | 108 ± 28 | 63 ± 22* | 46 ± 20*† | 42 ± 17*† | 40 ± 16*† | 33 ± 9*† | 47 ± 16* | 56 ± 19*§ | 57 ± 20*§ | 54 ± 18*§ |
PS100 (N m) | 111 ± 24 | 80 ± 21* | 65 ± 18*† | 62 ± 17*† | 59 ± 16*† | 53 ± 13*† | 63 ± 16* | 70 ± 19*§ | 73 ± 16*§ | 73 ± 17*§ |
PS10/PS100 ratio | 0.97 ± 0.10 | 0.77 ± 0.12* | 0.69 ± 0.12* | 0.68 ± 0.12* | 0.67 ± 0.12* | 0.63 ± 0.09*† | 0.74 ± 0.12* | 0.79 ± 0.13*§ | 0.78 ± 0.13*§ | 0.73 ± 0.11* |
TETANUS (N m) | 267 ± 82 | 213 ± 61* | 200 ± 58* | 196 ± 59* | 188 ± 53* | 175 ± 35*† | 200 ± 59* | 220 ± 56*§ | 229 ± 63*§ | 233 ± 70*§ |
MVC (N m) | 306 ± 80 | 247 ± 79* | 203 ± 69*† | 187 ± 63*† | 168 ± 53*† | 153 ± 40*†‡ | 180 ± 51* | 199 ± 62*§ | 211 ± 70*§ | 222 ± 65*§ |
Values are expressed as means ± SD. MVC, maximal voluntary contraction; PS10, paired stimuli at 10 Hz; PS100, paired stimuli at 100 Hz; SS, single stimulus; TETANUS, tetanic stimulation at 100 Hz; TT, time trial. Significantly different from pre-TT value: *P < 0.05; significantly different from 20% during the TT: †P < 0.05; significantly different from 40% during the TT: ‡P < 0.05; significantly different from 100% (=0 min) in rest after TT: §P < 0.05.