High Level Throwing super slow-mo video shows what’s really happening in a throw. This high-speed video clip displays how the arm moves through the throwing zone to ball release. Although arm pathways and release points will certainly be different, this is a great example of how the arm actually works at a high output. You will see the shoulder and forearm turn inwards (thumbs down movement) as the ball is being release. This helps protect the elbow joint during a throw!