The whole artificial pitch causes injuries thing is a load of rubbish anyway. There's no difference in injury rates or recovery periods following injuries whilst on artificial surfaces compared to those picked up on grass.
It's not that big a gradient, man.
It's probably due to the surfaces they're training on most days or the training methods that were employed by our former "coaches".
They've been pushing it hard the past few weeks. It was disgustingly bad when I had it a few years back. I wonder how long this free content will carry on for?
http://www.fourfourtwo.com/features/introducing-young-striker-bullying-belgians-and-interesting-europes-biggest
From the start of last season, interesting summary though.