TABLE 1.
Neuromuscular function of the quadriceps muscle before and after exercise following ischemic preconditioning (IPC) and the sham intervention (SHAM). Participants who increased their exercise tolerance (‘responders’) after IPC performed a time-matched IPC trial corresponding to the SHAM exercise duration (IPCtm).
| Parameter | Condition | Whole sample | Condition | Responders | ||
| Pre | Post | Pre | Post | |||
| MVT (N⋅m) | ||||||
| IPC | 300.764.1 | 165.950.5 | IPC | 276.765.7 | 127.333.9 | |
| SHAM | 307.260.0 | 171.439.5 | SHAM | 297.361.5 | 158.015.7 | |
| IPCtm | 276.754.8 | 156.858.1 | ||||
| PS100 (N⋅m) | ||||||
| IPC | 93.312.1 | 57.510.3 | IPC | 95.414.9 | 56.814.8 | |
| SHAM | 94.79.2 | 56.88.9 | SHAM | 96.611.1 | 56.19.5 | |
| IPCtm | 95.015.6 | 57.815.5 | ||||
| SS (N⋅m) | ||||||
| IPC | 61.08.9 | 27.18.3 | IPC | 61.712.0 | 26.610.8 | |
| SHAM | 63.46.9 | 29.19.0 | SHAM | 66.36.7 | 31.512.0 | |
| IPCtm | 63.77.3 | 30.112.3 | ||||
| PS10⋅PS100–1 ratio | ||||||
| IPC | 1.010.08 | 0.680.11 | IPC | 1.030.05 | 0.640.12 | |
| SHAM | 1.020.08 | 0.740.16 | SHAM | 1.070.03 | 0.820.22 | |
| IPCtm | 1.060.02 | 0.800.13 | ||||
| VM Mmax (mV) | ||||||
| IPC | 14.22.2 | 13.32.9 | IPC | 14.41.3 | 13.11.6 | |
| SHAM | 14.02.0 | 13.52.4 | SHAM | 13.31.8 | 11.72.0 | |
| IPCtm | 13.71.9 | 12.51.6 | ||||
| RF Mmax (mV) | ||||||
| IPC | 3.51.6 | 3.31.3 | IPC | 3.71.2 | 3.31.3 | |
| SHAM | 4.11.9 | 3.70.7 | SHAM | 3.91.0 | 3.40.4 | |
| IPCtm | 4.21.4 | 3.70.9 | ||||
| VL Mmax (mV) | ||||||
| IPC | 10.84.4 | 10.55.3 | IPC | 9.34.1 | 7.54.7 | |
| SHAM | 9.44.2 | 8.74.5 | SHAM | 7.92.8 | 7.43.1 | |
| IPCtm | 7.02.7 | 6.92.6 | ||||
| VA (%) | ||||||
| IPC | 96.12.7 | 88.812.0 | IPC | 96.01.9 | 79.813.3 | |
| SHAM | 95.61.8 | 91.84.3 | SHAM | 95.41.8 | 91.05.2 | |
| IPCtm | 95.61.5 | 86.28.4 | ||||
Values are expressed as mean ± standard deviation. MVT, maximum voluntary torque; PS100, paired stimuli twitch torque at 100 Hz; SS, single stimulus twitch torque; PS10⋅PS100–1 ratio, index of low-frequency fatigue; Mmax, maximum M-wave; VM, vastus medialis; RF, rectus femoris; VL, vastus lateralis; VA, voluntary activation.