yes i’ve read that too, so it would be like 4 or 3 acceleration runs from a standing start to reach the beeper at 6sec. or 5.75 sec., combined with the remainder of the run, the last 150m.
so these 4 or 3 200m runs would serve also as speed(the first 50m), as well as a high intensity split run(the short recovery w/the speed like 1st 50m), and strength endurace (the last 200m of a 400m run.)
does this sound right, whomever knows?
As well, I believe Michael Johnson split around 5.7Xsec. area at 50m in his 19.32 run and 6.6Xsec. area at 60m in his run. Maybe this tells us that 5.7X split at 50m was in-grained into his muscle memory from early on when he started to train with coach hart and do the 3X200m with short recovery.
If this is the case then most of his 200m development, perhaps came from improving the 50-150m zone of his 200 runs, since the first 50m was just automatic. So it’d be like a cruise to 50m for him and then he’d really start gunning it (the 19.32 race).
Interesting points.
Another fact I found interesting was in some of his 400 races, the HR (as well as stride length) went down throughout the duration. Exceptional conditioning or proper relaxation during the event? Or both?