Luke., on 21 December 2010 - 02:59 , said:
No way, that's on a stationery trainer in the lab. The trainer is calibrated at the beginning of the session to account for rolling resistance, rider weight etc. Apparently it's pretty accurate.
I think if I had all the kit you mention I could break an hour on a flat course with good conditions.
Oh ok, let's put it into perspective for you:
I am 73kg and last tested I sat at 411W PPO. I had just ended my base when I did the test so my lactate was relatively low. I took part in our provincial TT champs a few weeks later and posted a 57min. Flat road, course tar, but had the full kit short of a disc.
If you are riding with a PPO of 455W and loose that upper body mass you are going to be giving a lot of very good cyclists a big hiding in the years to come. I am only speaking from your stats and assume you are already riding competitively, but if you hook yourself up with the right coaches and team you are going to go far.
Find something worth dying for and then live for it.