Landmarks and Phases of a Drop Jump
The key landmarks of a Drop Jump are:
| Landmark | Description |
| Drop Landing | Point where a 20N threshold is exceeded. |
| Peak Impact Force | Greatest passive force on impact from box drop. |
| Contact Trough | Lowest force point between peak impact and peak drive-off force. |
| Start of Concentric | Rising from the lowest position after landing. |
| Peak Drive-Off Force | Peak active force (contraction based). |
| Take-off | Point of toe off/beginning of flight time. |
| Landing | Point of touch down (Force over 20N). |
| Peak Landing Force | Greatest force generated on landing. |
The key phases of a Drop Jump are:
| Phase | Description |
| Eccentric Phase | From drop landing until zero velocity. |
| Concentric Phase | Zero velocity until take-off. |
| Flight Phase | From take-off until landing. |
| Landing Phase | Point where force rises above 30N and settles back to bodyweight. |
