RunningInterested wrote:
Exactly my thoughts, but I am more interested in physiological reasons of choosing a training program like this.
It wasn't so much that you chose a program like that as you chose to use a program like that or not train. Really, physiology and its relationship to running was really in its infancy. Gerschler's idea of raising the heart rate to 180 and waiting until it was back down to 120 before starting the next rep seemed to have informed a lot of coaches' thinking but you didn't hear a lot of physiological talk.
Having started at basically the tail end of that era I can tell you that the vast majority of coaches saw no point in any running that wasn't reasonably close to your race paces. If you wanted to work on endurance you did longer intervals and if you wanted to work on speed you ran shorter intervals. Really, that was all anyone did other than warm up and cool down running and maybe an occasional "recovery" day. Only marathon runners, and they were fairly rare, did extensive steady runs.
Even guys who trained away from the track, Hagg, Andersson, Jazy, pretty much were doing intervals, that's really what fartlek is. I struggled for years with my college coach, who was really a great guy to whom I'm always indebted, when I found that I responded much better to slower, steady runs than I did to repetition work. It really wasn't until Lydiard's guys were so successful and people saw how they trained that coaches, at least American ones, began sending people off the track for steady runs and lots of them did it reluctantly fearing that the runners would disappear, sit under a tree for an hour, dump some water over themselves to look like they'd sweated, and run back to the coach.
And you also have to remember that running was very uncommon then. A lot of us were reluctant to do it in public view so there was another reason why so much training was done on the track. That's what a track was there for and you didn't practice anywhere else just as you didn't practice baseball anywhere than on a baseball field.
Would it work today? Sure. Why wouldn't it? It worked in the 50s and the human body is no different now than it was then. Would it work as well as the sort of things we've been doing from the 60s on? I don't know. I think significantly bigger volume is a big reason people started getting faster and I don't know if people in general would tolerate 120 mile or more weeks on a track. But certainly, you can develop your cardiovascular system doing big numbers of reps as Zatopek and many of his imitators proved.