How to WRECK your swing in the on-deck circle...

Every player wants to have every swing be their best. Every batter should be standing in the on-deck circle preparing for the next at-bat to be their best.

But many hitters in both softball and baseball are wrecking their swing in the on-deck circle. How?

Two ways. The first is by taking half-hearted swings. From a motor learning standpoint, any movement has what is called a General Motor Program, or GMP. That GMP has what are called parameters that are constantly refined to execute the skill. Think of parameters like lane markers on a highway. They tell you where to drive.

But if you change the parameters, such as changing the weight of a bat, or the center of mass of the bat, then you will change how the program is executed. When a player simply goes through a half-hearted swing in the on-deck circle, they are training their muscles to move at that speed. So when they get up to bat, their first swings are going to be slower because they have just changed the speed at which the GMP is executed.

As a result of using a batting donut, a player gets up to bat and now their swing mechanics are altered and the first couple of swings are not as efficient as they could be. In addition, adding a batting donut distributes that extra weight unevenly through the bat. 

The concept behind using a heavier bat is called "post-potentiation activiation." In layman's terms it says that you'll use more fibers faster after performing a few repetitions when weighted. However, as I just stated above, using a donut adds too much weight and as a result changes the mechanics of the swing. 

So how can you use the on-deck circle to its maximal potential? Here are 3 suggestions.

1. Use the on-deck circle to actually warm up. You can do some light stretches to loosen up and then 5-8 quick "squat jacks" to prep your body for quick lightning fast muscle recruitment. Also work on hip rotations to groove the movement pattern of that "perfect swing."
2. Get rid of the batting donuts and simply have multiple bats with a range of 4-5 oz. Using a bat that is slightly heavier (2-3 oz) will give you the post-potentiation effect without altering the motor program.
3. Swing the bat as hard as you can with each swing. Each time you take a swing, you are refining the motor program of the swing - you either improve your swing, or degrade your swing. Make every swing the "perfect" swing.