[Atanvarno]

Ist die “schonzeit“ nicht dennoch wichtig,

Kaum. Ich zitiere immer gerne Renato Canova zu dem Thema

Sorry, you are completely wrong. Yes, the final lap of Jeilan was 52.7, since the final lap of Mo Farah was 53.17.
But these are the final 400m of AEROBIC ANIMALS, so nothing to do with your calculation.
I want to say an anecdote. The Italian Alberto Cova won the first edition of WCH (1983, Helsinki) in 10000m with a last lap of 53.2. We were curious to see his real speed, and with his coach Giorgio Rondelli we bet about his time in a local competition of 400m one week after his victory. His result was... 52"8 !
Also about the training we use, we NEVER use max speed (apart short sprints uphill). Never, for example, Vivian Cheruiyot goes 400m at max speed, however she won 5000m in Berlin running the last lap in 57"9, and Sylvia Kibet 58"2. Since I'm the coach of Sylvia, I know very well she can run a little faster than 57" in a competition of 400m, and with, may be, 56"5 of PB can run 2'03" in 800m.
The key is the SPEED ENDURANCE, connected with the AEROBIC POWER, not with the lactic system.
You can see, in some day, the final of 1500m. Look at Silas Kiplagat. He NEVER ran a 400m faster than 54"5 in training, and a 300m faster than 37"2 on a good track.
Look at his race, and don't forget he has 28' flat in 10 km on the road. He is not able to run 400m faster than 49", and is a specialist of 1500m, not of 10000m.
And, about you, if really you have 47"2, it's clear your training is a very good example of a lot of methodological mistakes, including the choice of events that are out of your natural attitudes.

Quelle (Hervorhebung von mir)