HRE wrote:
Again, I think Arthur had a general idea of what he meant when he used those fractions but he didn't really seem to have thought it out very specifically nor did I ever hear him give a clear explanation.
I think you can use the fractions in at least two ways. One is as you quote above, i.e., when one is running a time trial. A 29:00 time trial for someone capable of running 27:00 is certainly a pretty scaled down effort.
But he also used those fractions when assigning distance runs during the base phase (again, in his books, I never knew him to do that in real life,) and in that case you'd find that the "easy" efforts were actually pretty brutal.
If you want to use those effort tables for base running and want specific numbers I'd suggest using heart rates, percentages of your maximal aerobic heart rate, though Lydiard would have preferred going by feel.
I only want to go by feel, however, i also need to be able to communicate these feelings so other people can understand them, as a coach and all. I use HRM to give people ranges within which to find certain feelings. I would like to fine tune those feelings and hoping Lydiard somewhere has communicated these things on that level. My whole interest in physiology is more to be able to speak to those people in that language more than discovering anything that could be useful out on the track. So if there are any feelings that have been described i would love to know about them. Like apart from a total loss of any sharpness (which is the main finding i guess), what other effects on the body did 250 miles a week have? What about the 50mile runs. How did Julian find the 200mile weeks? These sort of subjective-descriptive statements would be great for me.
Back to the paces - now i'm confused. I liked your initial explanation as it fit with what i thought would be common sense, so its the one i accepted as i was thinking about it. The 29:00min for a 27:00min runner is definitely no problem, however it couldnt be termed 1/4 could it. I don't know about that explanation. I'm going to go with the % of maximal effort as that is the easiest way to think about it. And surely Lydiard reduced things down to their simplest version. It's what he does. He is a revolutionary who defined a new way of looking at something. And in doing so he reduced it down to simplicity so that everyone could understand what he was talking about. Simplicity is something that defines Lydiard for me. So until a better explanation comes along i think i will stick with that thanks HRE.
When i get athletes to develop their aerobic system i approach it a number of ways as you do. Whilst there is a continuum of intensity there are those stopping points along the way. I'm trying to define them in terms of other exaplantions.
For example there is that point in an easy run, early on, where your breath first starts to 'draw'. I don't have a better term than that. It is like the aerobic system is activated now beyond resting state. For me this is the early range 120-130bpm. I'm wondering if it is Lydiard's 1/4. It is called an easy run by most coaches although their easy might stretch up into the mid range if the athletes aren't monitored.
Then you have the midrange. For me this is simply an extension of the early range. Through this range, 130-c.160, the only real change in the breathing is that it deepens. For someone naturally fit, the breath doesn't accelerate or rise up it just deepens. So the lungs work closer and closer to their maximum capacity in this stage. The capacity hasn't been reached so an increase in breathing rate hasn't occurred. This could be Arthurs 1/2.
Then the Upper Range, 160-170, where maximal lung capacity has been reached and the breathing rate is increasing, all the way up to where you are at your limit and not beyond. Limit of lung capacity each breath and the frequency of the breathing rate that you can endure. but still underneath this state only playing over the edge on occasion, because surely we have to know this edge. One fraction over and we start requiring our anaerobic system to take up the slack in energy requirements that the aerobic cant supply anymore by itself. So this could be the 3/4 pace. It is quite hardcore but it is cautious so as not to burn the system at all. :) Over this edge is where we get to play with the anaerobic ie 60min hard out runs pushing the threshold out, where 7/8 could come into play?
Does this conform at all to what might have been intended?