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Endurance Corner -- KP's lactate step / fuel test

Posted By: KP
Date: Wednesday, 31 October 2007, at 9:25 p.m.

I flew to Boulder this weekend to get a close up view of Gordo's "Endurance Corner" business and lab set-up. Endurance Corner is the evolving full service human performance lab the g-man has launched in Boulder. Very interesting trip. I was tested on the bike for a number of different blood and respiratory markers, including lactate and substrate use (fuel burning // fat vs CHO) during increasing efforts. You have probably heard quite a bit about labs testing for blood lactate, LT profiles and VO2 Max tests. What is going to be very valuable in this lab is the use of fuel testing in conjuction with the lactate testing to get a more precise and in depth view of what's going on in an endurance athlete.

Thanks to Gordo, Mat and Alan for making the opportunity to test available to me. I didn't leave anything on the table as evidenced by my cycling HRs at 180 in a test that lasted nearly 80min (including warm up). Realizing that I am coming off of a forced layoff, am relatively detrained and 15lbs over race weight, I expected some of the numbers reflecting lower watts at higher HRs. However, the fuel burning data was a bit of a suprise to me. Much less fat burning than I expected. The substrate (fuel) testing is going to prove valuable to endurance athletes and ultra endurance guys and gals in specific.

Most testing on 'endurance' athletes is about 1-2hrs long. When the Endurance Corner lab starts developing a library of 5-6hr rides there are going to be some interesting things to share with our athletes and the IM community.

Below are some pictures of my test and meetings during the weekend as we brainstormed. As well, the PDF file of my test results.

Gordo and KP prior to testing

Mat and Brian Johnson warming up

30min warm up prior to start

Taking my blood and busting my butt

My exhaust (expiration) was analyzed in a way that gave a snapshot of what fuel was used at given efforts.
Alan can correct if I am wrong; the Met-Cart measures CO2 which describes fuel as fat vs CHO

Brainstorming clockwise: Gordo, Monica, Dr. J, Will, KP, empty chair is Laurie (taking pic),
Wendy, JD, Mat, Kelly, Alan, Jenny, Doug, Sam, Brian, Erin

Link to my data in PDF format

Gordo has posted a profile of his fuel burning efficiency (fat vs CHO) on the Endurance Corner forum (not yet public). Perhaps he can share those results or a link, here. His elite profile is very different from mine (veteran AGer, detrained, 15lbs over race weight, two hours separating us at an IM finish line).

coach KP

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