The first pattern hinges your right arm. This trains your body to use the momentum.
As you progress in golf, having a solid L to L is critical for helping stabilize your speed.
When you set up to the ball, you need to feel like you push the handle down and into your right foot. Here is how that helps your swing.
In golf, it is hard to feel how to take the momentum of the club back. Here's where the front loader drill comes in.