i know that throwing a punch is a different motion than throwing a baseball, but i was wondering what people think. would faster arm speed developed from boxing translate to a faster fastball?[/quote]
The idea of creating torque and power with the hips to create a more powerful punch can carry over to one fastball.
The raw explosiveness of each could also correlate. By boxing and using your body slightly different, you can possibly acheive better coordination as well as the ability to activate more motor units at once.
However the actual arm motions do not necessarily cary over between the two. I actually think this can be good as you have a mental separation between the two, since the goal of both motions is so different.
When throwing, the arm has external rotation that helps to propel the ball.
A punch is more a press of the arm.
All that being said…
Stronger punch does NOT EQUAL faster pitch.
HOWEVER, boxing, and utilizing your body in such as way will possibly make you a better athlete, which will inturn increase your ability to apply force to a baseball when throwing.