Relaxed to ‘tensed’ transfer in sports

I was thinking earlier about different sports and the underrated skill of transferring a relaxed body into a tensed ‘explosive’ act. IMO, being too tense in general on a given day (such as anxiety for whatever reason) can have a negative impact on this transfer.

Starting with a sport I’m not very skilled, I think it’s important to have a relaxed golf swing that starts to tense in the core, and end with a tightening grip at contact.

In volleyball/tennis, being in a relaxed state but tensing/tightening up at strikes creates the most dynamic power.

Tackling or being tackled in football is most obvious. When throwing a football, I always have the most power when thinking about starting a throw relaxed but finishing it with tensed force including grip at release.

This post is mostly trying to figure out to dunk a basketball. I’m 40, white, and only 6 ft tall in shoes. I’m closer to dunking than I’ve been in decades. I feel like if I can maximize this area, maybe there’s a chance. Relaxed run up, increasing speed, long wind up step, tense the core through the quads/hamstrings/glutes, big arm swing, explosive ankles/calves push off. Any tips for mastering this sequence and getting them to all work together for the most lift?

Any other good examples in sports or am I babbling incoherently?