There is an endless debate on how kids should be training these days and a big backlash against specialization. I'll be honest, I used to think if I had a kid, I'd Tiger Woods him/her. Now that I have one, I'm a little more realistic and more concerned with keeping my kid healthy/happy. I think by doing this, I'll actually be providing them a solid base to allow them to later become, if they choose, an athlete in a particular sport.
Wouldn't a kid be better served, training like this. (even us adults)
Then Like this? I may be biased, but I've never seen anyone get better at a sport, by getting good at an agility ladder. No crossover.
Getting kids back to doing things like this. (even us adults)
Here is an excellent paper that talks about the cost/benefits of early specialization. PROJECT PLAY.
What you will notice with these videos is an emphasis on getting your body to move better and more efficiently. If you create a large base of mobility/stability at a young age, you can build a higher pyramid in terms of athletic development. My 2 cents.