Thanks for sharing. My mill keep uses interval sprint (all-out running) philosophy.

I learned this from Doc of Baystate Kennels, who basically said he would put a rabbit or other dog in front of his dog on the mill, which would geek-up the dog to go all-out (and he'd do this until the mill dog just couldn't go all-out anymore, and would trot) ... upon which time Doc would remove the bait. Doc would then watch the mill dog's breathing as it trotted ... and he would jot down the time it took the dog to recover (stopped breathing so heavy) ... upon which time Doc then would re-introduce the bait so the dog would go all-out again to failure, etc.

He would try to see improvements in 1) how long the dog could go all-out, 2) how little it took him to recover, and 3) how many sets of this he could do until he surmised the dog had had enough.

I think this kind of interval sprint workout is far better for what a dog is supposed to do than just long-distance trotting, which is why that is the mill keep in my book.

Jack