Table 1.
Differences in countermovement vertical jumps (CMVJs) for different additional loads. Force variables, men, n = 18
| Additional load (%BW) | Variable | Mean | SD | Significance of differences
|
||
|---|---|---|---|---|---|---|
| Additional load (%BW) | ||||||
| 0 | 10 | 20 | ||||
| 0 | IB (Ns) | 80.62 | 23.46 | |||
| 10 | 79.53 | 24.23 | – | |||
| 20 | 89.54 | 28.67 | – | – | ||
| 30 | 94.03 | 30.25 | ** | ** | – | |
|
| ||||||
| 0 | IA (Ns) | 212.3 | 27.33 | |||
| 10 | 220.2 | 26.87 | ** | |||
| 20 | 227.9 | 29.32 | ** | ** | ||
| 30 | 233.1 | 27.98 | ** | ** | – | |
|
| ||||||
| 0 | FBA (N) | 1150.2 | 190.0 | |||
| 10 | 1177.1 | 182.2 | – | |||
| 20 | 1305.9 | 228.0 | ** | ** | ||
| 30 | 1405.1 | 241.3 | ** | ** | * | |
|
| ||||||
| 0 | FAA (N) | 1543.9 | 278.6 | |||
| 10 | 1595.1 | 237.8 | – | |||
| 20 | 1661.8 | 242.9 | ** | * | ||
| 30 | 1733.4 | 250.1 | ** | ** | ** | |
|
| ||||||
| 0 | FIM (N) | 5192.0 | 1448.1 | |||
| 10 | 5189.5 | 1444.7 | – | |||
| 20 | 5071.3 | 2006.2 | – | – | ||
| 30 | 4935.1 | 1190.6 | – | – | – | |
IB – force impulse during the braking phase, IA – force impulse during the acceleration phase, FBA – average force during the braking phase, FAA – average force during the acceleration phase, FIM – force of impact at landing
*
p < 0.05,
**
p < 0.01