Originally Posted by mcjimbosandwich

a friend on my team works in a lab that has testing equipment, and as such, people on the team volunteer to be guinea pigs for the tests. so yes, they are free. now given that, i get the feeling that this isn't the end all and be all of tests, and given the choice of relying solely on info from VO2max vs info from a powermeter, i'd go with the latter. the number i care the most about: the FTPHR, estimated by taking the last 20min of a 30min TT, & the LTHR obtained from the lab didn't differ that much: 173 for the former and 167 for the latter. while the definition of the two are similar, they aren't the same and i'm actually using what i get on the road test for training purposes.