Quote Originally Posted by AdamGB
It won't improve endurance, because the creatine energy system is not used during long duration events.

It will improve activitys which use the ATP CP energy system but I've never felt the need to suppliment it, as long as you're eating a healthy amount of red meat you are practicly taking Creatine anyway.
Adam, have you got any articles or links relating to ATP CP energy?
not 100% sure