No Muscling 6/18/2000 - By George Freeman
When bowling, it is easy to try to put all your strength into your shot, especially if it is a crucial moment in the game. Fact is, the power in bowling does not come from the arms, but from the legs. Getting into a good leverage position is essential for a good shot, that means keeping your center of gravity as low as possible and centered over your shoulders. If you get the shoulders over to much, or if you "stand up" on release, you will probably put unneeded muscle strength into your bowling arm, causing an errant shot.
Bowling depends a large part upon "muscle memory." Your muscles get accustomed to a specific movement, and over time, they even get used to how you move for a particular activity. They "remember" and therefore can make repeating shots much easier. If you throw extra variables into the mix, like tensing muscles, or changing your center of gravity, the muscle memory gets confused, and that means you might pull your shot, send it wide, or any number of other maladies.
Try to keep your armswing as loose as you can. The less muscle you have in your swing, the easier the muscle memory is going to be. A good way to do this is when you push the ball away from your body, just let gravity take over, don't try to help the ball in your backswing. Letting the bowling ball act as a dead weight will give you a consistent swing every time, as the mass of your bowling ball never changes (at least I hope not).