pan y agua
Join Date: Aug 2005
Bikes: Wilier Zero 7; Merlin Extralight; Co-Motion Robusta; Schwinn Paramount; Motobecane Phantom Cross; Cervelo P2; Motebecane Ti Fly 29er; Calfee Dragonfly Tandem
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There is a little portable blood lactate machine, about the size and appearence of a blood sugar device for a diabetitc. I've seen them for around $400.
However, I personally think the money would be better applied to a powertap. With a powertap and a fild test you can figure your funcional threshold, which is really the relevant number anyway, and will be very close to the lab test for most people. Even without the powertap you can get your LTHR with an HRM from a field test that's going to be very close to the blood test.
I had a lab LT test done this winter, and it came out on the button to what my CTS field test predicted. Made me decide I wans't paying for anymore LT tests.