When were they weighed? How was their height measured? In bare feet? Really, does anyone believe these numbers, other than to say most of these guys are in very good shape?

My weight can vary by 10 pounds, and I'm an inch taller, at least, when wearing my size 12 Hoka elephant shoes. My Tanita scale has had me between 5% and 11% body fat, fwiw. (not much)

-Robert

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"How wonderful it is that nobody need wait a single moment before starting to improve the world." ~Anne Frank

BMI is a perfect metric for comparing BMI to other things.

Not every investigation is interested in whether the weight is due to fat or muscle or other. To answer certain question it doesn't matter if the weight is muscle or fat. You can see a hint that BMI correlates with run speed for the men, where mass doesn't. That is information. You could dig deeper and see if body composition matters too, or not. That would be more information.

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Kat Hunter reports on the San Dimas Stage Race from inside the GC winning team
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Freelance sports & outdoors writer Kathryn Hunter

Also, if weight and height are self-reported, you can probably add 5 pounds and subtract an inch. From what I can tell, a lot of pros like to do some creative rounding. Apparently most people do: Sex and ethnic differences in validity of self-reported adult height, weight and body mass index

I agree that weight especially can be somewhat ambiguous. Weight two weeks out from Kona, on race morning and six hours into the race could be significantly different.

It's still interesting to get a rough idea and I appreciate these features.

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Agree fully. My weight varies a lot, especially around race time.

My question would be was this from the mandatory pre race weigh in?

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Founder of THE TRIATHLON COLLECTIVE (Closed Facebook Group). A SBR discussion group without the white noise/trolling!

BMI is a crap metric only for the purposes of determining if an individual is fat or not, especially in muscular men.
It's actually a pretty decent metric here...

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Founder of THE TRIATHLON COLLECTIVE (Closed Facebook Group). A SBR discussion group without the white noise/trolling!

(1) I doubt this is pre-race weight, my guess is Potts is below 170pounds for Kona
(2) Weight is just one of the prongs in the approach to running.....not the end all be all.

That was a typo, but if all could just be in kg and cm the world would be much simpler.


Well, they had Kienle at 180cm/5'9'' and Hoffman at 178cm/5'10''. Go figure.[/quote]

[/quote]
I think everything should be metric.

I think everything should be metric.[/quote]
Oh god, not this again!

Yes, though.

What you are proposing... is outlandish!

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Founder of THE TRIATHLON COLLECTIVE (Closed Facebook Group). A SBR discussion group without the white noise/trolling!

2.1-2.3... damn, that's lean. I have a lot of work to do.

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TrainingBible Coaching
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If this hasn't been posted yet, then, here is my reply to what is obviously trying to pick a signal out of the noise (with no averaging, for you signal processing folks)

http://tylervigen.com

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The question of who is right and who is wrong has seemed to me always too small to be worth a moment's thought, while the question of what is right and what is wrong has seemed all-important.

-Albert J. Nock

I don't like this thread, because I can't blame being 6'3" / 180 as why I am so slow :(

I'm apparently at 2.05 and I'm 5 lbs less on race day, which puts me at 1.99. So damn, I am apparently very lean.

Height: 73 inches
Weight: 150 lbs - 145 on race day

if you are lean that ratio is higher...

No.

Any ideas as to why this spread is so different than last year (http://www.slowtwitch.com/...15_Men_Run_4058.html), where the men were all within a narrow band at ~180cm / 72 kg?

At least this year there's variation. Any idea why its so different? Wind?

Because Andy Potts and Jan Frodeno didn't race last year.

We have bigger misconceptions about causal inference.

Only the best! Rinny! :)

Right on. That is usually what I think when I see someone trying to measure performance via statistics. 1) not much is held constant 2) too wide of range of independent variables 3) you can say anything you want to say with statistics, especially with a scatter plot. It is still fun to read.

But, I did do the lb/ht formula mentioned above and I am the exact same as FVL at 2.14. I just can't figure out why my times are off by a couple of hours. 😏

well for general population i suppose not.. it is a bmi type metric.

180cm / 60kg = 3 is quite lean

180cm / 90kg = 2 can be a pro bodybuilder (lean) or typical sedentary american (blubber)

It's weight/height.