Strength has NOTHING to do with revolutions. It's the technique of clearing the thumb and fingers correctly and the lift you impart with your fingers that gives a ball the revolutions you're looking for.
Yes, you will get stronger as you get older,but that also does NOT mean you'll increase your rev rate as you grow.
I lift weights every day and also do work on wrist and hand strength,plus my work is physical. Suffice it to say that I'm fairly strong. I was trained to be a stroker and let the ball do the work.
Practice and concentrate on accuracy and spare making. You'll find those will increase your scores more than a few extra revs will.
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Chris
JTTDB---Just Throw The Damn Ball
Don't "think"---that ball isn't in your bag yet..........