To a thoroughly finite level. This is the beginning of your movement. Rear back to throw, foot hits the ground and your knee bends, or squat down to jump. You make the transition from backward to forward, from down to up. This is called the amortization phase of a movement.
Force is applied in hitting, throwing, jumping or the push-off in each running step.
It takes a fraction of a second usually to exert any given amount of force in any given movement. In sports, the only exception is powerlifting, where a movement may take a full second or longer to complete. Let s pull this strength curve apart bit by bit. You re gonna be amazed at what you learn from this little exercise. For me, doing so proved to be the ultimate KEY to getting strong enough to break world records.