this is a verbatim quote from a "Jack Daniels PhD":
"There are three kinds of threshold-pace workouts: tempo runs, cruise intervals and cruise repetitions.
Tempo Running
A tempo run is a steady, controlled run that should last about 20 minutes at threshold pace. A steady intensity of effort is important. Going too fast on a tempo run is no better than going too slow, and neither is as beneficial as running the proper pace. You could perform a longer-than-20-minute tempo run, but 20 minutes has been shown to produce positive results, and it will leave you relatively fresh for the next day's training.
Here's a typical workout: After a 1- or 2-mile warm-up, run for 20 minutes at your threshold pace, then do a 2-mile warm down. Simple enough. However, a few warnings are in order.
First, it's almost never a good idea to do tempo runs with a partner or group of runners. To run a tempo run correctly, you must complete it at a very specific pace, and it's rare that a partner or group of different runners would need to run the exact same pace as you. In addition, when several runners get together, they all too often turn the workout into a race. This destroys the value of the run.
You must also resist the temptation to run each tempo run harder than the previous one. This is a trap many runners fall into. It's easy to understand why. Since a tempo run is hard but controlled, you could put a little more effort into the next one and do it faster. While this might make your training diary look impressive, it won't add to your fitness, and it might detract from your next race.
When you run faster than threshold pace, you enter into "no man's training land," somewhere between threshold- and interval-training pace. This in-between pace serves no real purpose. So stay cool and keep your tempo runs under control.
Here's another warning about tempo runs: It's important to run at the right intensity; speed will vary under different conditions. When you encounter the wind, hills, even temperature extremes, maintain a steady effort and don't worry to much if your splits vary from mile to mile. On occasion, it's a good idea to run your tempo run on a track because you can measure your intensity exactly.
You might think the ultimate tempo run would be on a treadmill, where everything can be kept perfect. However, this environment reduces the concentration required to keep the proper pace, and therefore I don't recommend it. Learning how to concentrate on your pace, though not a physiological benefit, may be one of the most important things you can learn from tempo runs."
1. Must be a different Jack Daniels than you are referring to.
2. It shouldn't surprise anyone that Bob Schul has no reference to words or meaning of "tempo" runs = he trained under a very rigid (and successful) system.
3. There are countless runners throughout the world who use the term "tempo" runs
4. Using words that you have suggested DOES NOT in any way mean runners aren't doing the exact same thing - changing words doesn't change what actually takes place during the actual run. I'm gonna take a wild guess here: there are more than a few Kenyan who have no clue what the 'proper' terms are for tempo runs, as defined by you or Jack Daniels or an alarmed/disgusted Bob Schul. Those things we use to transport ourselves around .... are they automobiles, cars, motor car or wheeled motor vehicle? They all are the same thing and have the same function. What is your advice about what to call them?
5. This is straining at gnats and engaging in counting the number of fairies dancing on the head of a pin.
6. Name dropping hardly strengthens your position. A number of people posting here could do the same thing.