While watching a video of my DD pitching on an Iphone App, I noticed that her arm is whipping where it almost looks like jello upon her follow through. At first glance it looks rather strange and painful. I asked her if it hurt or even if she knew it was whipping like that. She says no to both questions. My question/concern is this.......Is this a normal motion of the pitching arm for a 10 year old? Is it safe? Are there any long term effects that could arise? I know the arm is supposed to be loose but this looks as though her arm is made of rubber. Please take a look at the video, apologies for the poor quality but you can clearly see what I am talking about. Thanks.
LP3313 - YouTube
LP3313 - YouTube