From: The effect of two types of ankle orthoses on the repetitive rebound jump performance
No-orthosis | orthosis 1 | orthosis 2 | p-valuea | effect size (f) | significanceb | |
---|---|---|---|---|---|---|
Squat jump | ||||||
Jump height, cm | 26.6 ± 5.2 | 26.5 ± 5.3 | 25.3 ± 5.5 | 0.003 | 0.594 | no-orthosis, 1 vs 2 |
RFD, N/s | 2602 ± 1158 | 2798 ± 1182 | 2682 ± 1203 | 0.633 | 0.157 | |
rRFD, N/kg/s | 42.9 ± 20.3 | 46.3 ± 19.4 | 45.1 ± 23.3 | 0.643 | 0.153 | |
Vertical impulse, Ns | 166.1 ± 49.2 | 162.5 ± 44.9 | 168.4 ± 54.6 | 0.417 | 0.217 | |
PeakPower, W | 2356 ± 706 | 2339 ± 676 | 2274 ± 687 | 0.007 | 0.543 | no-orthosis vs 2 |
VGRFmax, N | 1421 ± 308 | 1424 ± 277 | 1428 ± 286 | 0.939 | 0.055 | |
rVGRFmax, N/kg | 23.0 ± 2.2 | 23.1 ± 2.1 | 23.2 ± 2.3 | 0.831 | 0.101 | |
Maximum dorsiflexion angle, degree | 120.6 ± 5.5 | 125.4 ± 6.8 | 127.3 ± 5.0 | < 0.001 | 0.811 | no-orthosis vs 1, 2 |
Plantarflexion angle at toe off, degree | 171.2 ± 5.8 | 167.1 ± 6.9 | 163.3 ± 4.5 | < 0.001 | 1.077 | no-orthosis vs 1 vs 2 |
ROM, degree | 50.3 ± 4.7 | 41.6 ± 5.4 | 35.8 ± 3.9 | < 0.001 | 2.409 | no-orthosis vs 1 vs 2 |
Countermovement jump | ||||||
---|---|---|---|---|---|---|
Jump height, cm | 28.3 ± 5.6 | 28.3 ± 5.5 | 27.8 ± 5.9 | N/A | N/A | |
RFD, N/s | 3277 ± 1878 | 2971 ± 1615 | 3062 ± 1877 | N/A | N/A | |
rRFD, N/kg/s | 53.9 ± 29.2 | 49.2 ± 26.4 | 50.7 ± 30.5 | N/A | N/A | |
Vertical impulse, Ns | 157.4 ± 33.4 | 141.2 ± 37.5 | 154.8 ± 38.8 | N/A | N/A | |
PeakPower, W | 2459 ± 742 | 2448 ± 705 | 2423 ± 718 | N/A | N/A | |
VGRFmax, N | 1391 ± 299 | 1356 ± 271 | 1378 ± 284 | N/A | N/A | |
rVGRFmax, N/kg | 22.5 ± 2.0 | 22.0 ± 2.1 | 22.4 ± 2.6 | N/A | N/A | |
Maximum dorsiflexion angle, degree | 117.6 ± 7.6 | 122.7 ± 6.7 | 124.5 ± 6.1 | < 0.001 | 0.703 | no-orthosis vs 1, 2 |
Plantarflexion angle at toe off, degree | 170.9 ± 6.3 | 167.3 ± 6.7 | 163.9 ± 4.6 | < 0.001 | 0.883 | no-orthosis vs 1 vs 2 |
ROM, degree | 53.3 ± 5.5 | 44.5 ± 5.6 | 39.3 ± 3.8 | < 0.001 | 1.940 | no-orthosis vs 1 vs 2 |
Repetitive rebound jump | ||||||
---|---|---|---|---|---|---|
Jump height, cm | 26.3 ± 6.6 | 26.0 ± 7.2 | 25.1 ± 6.1 | N/A | N/A | |
contact time, s | 0.22 ± 0.04 | 0.22 ± 0.04 | 0.24 ± 0.08 | N/A | N/A | |
Rebound jump index, m/s | 1.26 ± 0.34 | 1.24 ± 0.31 | 1.18 ± 0.31 | N/A | N/A | |
Maximum dorsiflexion angle, degree | 124.9 ± 8.4 | 128.8 ± 7.4 | 131.4 ± 6.8 | < 0.001 | 1.784 | no-orthosis vs 1, 2 |
Plantarflexion angle at toe off, degree | 170.0 ± 7.6 | 165.9 ± 7.4 | 163.8 ± 4.2 | < 0.001 | 1.652 | no-orthosis vs 1, 2 |
Range of motion, degree | 44.9 ± 7.5 | 36.8 ± 6.0 | 32.4 ± 5.4 | < 0.001 | 1.825 | no-orthosis vs 1 vs 2 |