|  | Peak force (N) | Rate of force application (N/s) | Thrust duration (ms) | |||
---|---|---|---|---|---|---|---|
 | Thrust | Asymptomatic | Symptomatic | Asymptomatic | Symptomatic | Asymptomatic | Symptomatic |
Upper cervical spine | 1 | 273^ | 136 ± 29# | 1074^ | 601 ± 269 | 180^ | 93 ± 54 |
2 | 407 | 174 ± 34 | 1787 | 895 ± 214 | 160 | 104 ± 32 | |
p-value | Â | Â | Â | Â | Â | Â | |
Lower cervical spine | 1 | 193 ± 74 | 174 ± 37 | 638 ± 98 | 912 ± 271 | 147 ± 12 | 103 ± 43 |
2 | 248 ± 112 | 229 ± 62* | 895 ± 328 | 1502 ± 731* | 147 ± 12 | 112 ± 34 | |
p-value | Â | < 0.001 | Â | < 0.001 | Â | Â | |
Thoracic spine | 1 | 368 ± 71 | 490 ± 77 | 1732 ± 461 | 2749 ± 661 | 142 ± 19 | 108 ± 27 |
2 | 464 ± 109* | 573 ± 90* | 2724 ± 587* | 3710 ± 815* | 120 ± 10 | 111 ± 6 | |
p-value | 0.004 | 0.000 | 0.004 | 0.000 | Â | Â |