Well, we don't know a whole lot of Joe's variables, except that he tested his HR max at 193, and he had put on 20 pounds since he was fit, and was approaching 35 years of age. After a long-winded laying of foundation (a written form of "aerobic base-building"?), our first "introduction" to "Joe" comes in Part IV (in those days Hadd was known for talking a lot):
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"A little over 5 years ago I coached Joe to two 2.27 marathons. We had expected the second race (some 6 months after the first) to be sub-2.25, but race day proved to be extremely wild and windy and Joe ran his heart out and yet just broke his earlier 2.27 by a bare 2 seconds.
We would have ducked the race under normal conditions and found another, but it was a fall marathon and we did not have a fall-back. Life being what it is, there was no guarantee how things would be if we waited till the following spring. Work, injury, illness... anything could happen in four/five months. Joe made the decision to race, and I admired him for doing so.
Some months after the race I moved house, away from the area and we lost touch.
Early last year my wife raced near Rome and Joe came across her after the finish line and we all met up that evening for a meal and a chat about old times. We had all enjoyed many long runs together all those years ago, so we had much to recall and talked late into the night.
Joe ruefully admitted that he had put on 20 pounds and was now approaching 35 years of age. He was also mired in work, since he was the financial controller of his family’s printing business and was having to hassle many clients for lack of payment on time. A relaxed, easy-going guy, Joe admitted that the stress of having to constantly argue with clients was getting to him and serious training had long been forgotten. It was at least two years since he had had any kind of fitness and now he was down to maybe 20 miles per week, if that. And slow!?! (many of us could tell similar stories)."
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Because Hadd was coaching remotely, he decided that training with a HR monitor was the best and most practical approach to determining effort, and progress.
The actual schedule is detailed in Part V "B". There was a 3 week introductory period to get up to 50 mpw, then a 3-week plan to get up to 80 mpw, then some highlights for the remaining 16 weeks after the introductory buildup. After 22 weeks (3 weeks introduction + 19 weeks of training) of primarily "aerobic" running, Hadd asks "Was his aerobic training finished at that point? Far from it. I figured we were only halfway there."
The "condensed" link I gave seems to be cutoff in the middle of the last part VI. So here's another link, with all of Part VI: