Originally Posted by JimiMimni

I lift all year as well. Some of my best nights of racing came after HEAVY lifting the night before.

There is evidence for high-force movements potentiating high-velocity movements. I've not read a decisive position stand on the matter, but there is reasoning behind it. From my colleagues:

Potentiation effects of half-squats performed in a ballistic or non-ballistic manner. - PubMed - NCBI

Understanding Vertical Jump Potentiation: A Deterministic Model. - PubMed - NCBI