roch-cha-cha wrote:
Coaches shouldn't mix energy systems during workouts.
See the mixed interval thread.
I would say the effectiveness of the workout is dependent on when your goal race is, what you have been doing up to this point, what you plan on doing in the future, and what you respond to well. Here is a quote from one of Tinman's articles (can be found at
http://www.therunzone.com/IntervalRecoveries.html):
If you grew up in the American system of using short recoveries while doing long, hard reps this new information may seem odd. However, it is true. You will have to trust me enough to try this method a few times. It is my observation that runners soon feel less wiped out after long-rep workouts yet have wonderful gains in fitness. By the way, David Moorcroft, former world-record holder in the 5k regularly ran 4-5 x 1 kilometer at his 3k pace or slightly faster, and he rested 6.5 minutes between each repetition. He had times of 3:33 for 1500m, 3:49 for the mile, 7:33 for 3k, and 13:00 for 5k. Perhaps his success will convince you to give the method a try?
This guy was doing kilometers at 3k pace so miles at 3200m pace might be a little ambitious, but the point is that hard reps with long rest can be beneficial.
Also, the guy above me is retarded. 4 x 1k at 2:45-2:50?? That's probably right around mile pace for this guy. And with 45(!!)-60 seconds rest to boot, this workout would obliterate the OP.