Vertical Force at Max Velocity
At top-end speed, over 90% of a sprinterβs ground reaction force is directed vertically, supporting their body weight and keeping them in motion. (Weyand et al., 2000)
At max velocity, sprinters arenβt accelerating forward as much as they are βbouncingβ off the ground with minimal contact time. This requires high vertical force output and the ability to apply it quickly (i.e., high rate of force development).
This requires high Eccentric Strength and ability to create forces at very very fast speeds RFD
Training that helps develop these qualities:
Hurdle Hops
Altitude Drops
Eccentric Training (i.e. Flywheel Training)
Bounds
Squatty Running
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