hauki wrote:Ventolin with all respect, aren't you trusting the jundo predictor way too much or at least the 400
No.
You have to use it with some common sense.
Not just inputting PBs but what is a more realistic estimate of an anthlete's ability at the time.
I get for Rudisha 3:26.38 with 45.5/1:41 and if i slower the 400 by one second i get 3:22.98 and if one sec faster still 3:29.78
From above.
45.5PB is not a realistic estimate for his London shape. That was an early season run & he's quoted that he doesn't do much speedwork for his February/March races meaning he ran that 45.5 off his endurance work.
It was probably about 45-flat in London ( maybe even into high-44s )
45.0 / 1'40.9 ->3'27.2
As a theoretical 1500 if his endurance lasted "perfectly" upto 1500 of just "pure" 800 training. It woudn't & anyone with a clue about him woud know he'd be doing damn well to even break 3'35, so a 3'27 potential is of little relevance ( It also predicts a 13'30 for a 5k for him. Is that of any relevance to him ?! )
This is rubbish for fast type of 800 runner coming from 400m SPRINT distance
Read above.
You put in an almost certainly wrong 400 for his London shape & he doesn't train for the 1500.
Not only, but i also get random numbers for myself, if i use my 400 pb. My values for 5k/10k is "about" 17.30/36.00+ but my 400/800 aren't definately 1:15.25/2:35.21
This is where you have to use some common sense.
I know nothing about you, but your 5 & 10k aren't of similar "quality".
Rule of thumb for an equally strong 5k/10k guy is
10k = 2*5k + 1'00
Your 5k & 10k times are mismatched & you will get nonsense 400/800 times.
I see you have given us a crucial extra bit of info & say you had a 56s for 400 ( assuming in same shape as the 5k/10k ).
Using 56 & the 17'30 & 36'00+ & guidance, a very rough prelim estimate for your then metric potential is
56.0 / 2'05.1 ->
4'16.9
5'56.1
9'22.8
16'38.4 !!
36'00.5
Are any of the 800, 1500, 2k or 3k close to what you have run in your ideal race ?
Looking at the 5k/10k there, it actually indicates your 5k of 17'30 is very poor & if you had 56 speed & 36'00 endurance at the time you shouda been running nearer 16'38 in your perfect 5k not a 17'30
Do you see the problem there? The predictor thinks 400m AS A ENDURACE DISTANCE rather than sprint distance
A calculator doesn't know what is a sprint or endurance. You have to input realistic times & use common sense about an athlete's ability
I've run 56 for 400m. There should read "not shorter than 800m or 1500m distances" because 75 second for 400 is interval/tempo run pace
Trying it out, the "NOT shorter than 400 looks accurate"
If i put 56/2:00 i get 14:42/31:04 and i know for a fact i can't run long distances that fast
See line above with 56.0 & ~ 2'05.1
Without knowing anything about you apart from what you've said, I'd say you 800 was ~ 2'05.
Anywhere close ?
But i still think jundo gives good predictions for longer distances, when example 1500/3000 is known and 5000 is the coming event.
I've tried it a lot & if you use good inputs ( remember GIGO ) it's accurate from 400 - 10k ( & even M for Paula !!! )