In reply to matthewbromley:
Probably basically not much for boulderers. For instance, in his training video Jan Hojer (who just won the boulder world cup in Chongqing) says: "I train 3 to 5 times a week, usually for about 2 hours ... Even if I add 2 hours of antagonist training, stretching and running, I won't exceed 15 hours of training." ( )