boney wrote:
That's the thing, while I believe that in most cases, I\m not sure its true. If you ride the same routes, over a number of years, and numerous types of weather, wind etc, I think a trained athlete knows where they are fitness wise. I ride a really nice bike but after that, am tapped out. you are sort of suggesting a shitty ass bike w power meter, trumps a nice bike with lots of training.
I log everything I do and can flip back multiple years to see how I rode the same loop, at the same time of year, then compare weather conditions.
I think Perceived Exertion, compared with time based results, might be seriously under utilized.
I get the GPS for non measurable stuff like swimming, kayaking etc. but for running/biking, if I ride/run for x amount of time, I can tell you, base on PE, very accurately, how far I've gone.
Hey Andrew, in fairness, i can ride the Gats loop 90K door to door from my house and some days at 180W average it will be 2:50, other days 3:00, other days 3:05. The wind and temp and clothing can make a dramatic difference. But you are right, I could put the powermeter away and if I do 2:50 on a cold day with a ton of winter riding clothing the perceived exertion will be very high....because chances are I am having to do 210W for the same ride.....so yes, I suppose just knowing the time of the loop and perceived exertion generally gives us a good picture. Certainly for runs it gives almost the entire picture. I also do a P8 to Champlain lookout TT.....in the last 3 years my wattage on that is 255 on an average day and 260 on a good day. My times range from 21:30 to 21:10. I could put my powermeter away and pretty well look at the time and know what watts I did. Here is an interesting data point. I did a hill climb outside my company west coast office in San Jose in 14.xx in 260W. Then I said the next day I am going to do it at 280W and that should get me to sub 13:30. I did 13:29 and was 281W. I just went to my redline and that's the number I ended up recording. It's not like I was chasing a number on the screen, I just did what my body allowed me to do via perceived exertion and the split time and wattage were exactly my predicted number. Before IM Texas this Apriil when I had some bike problems, I did 4 IM's in a row at exactly the same wattage 182W....IM Texas 2014, IM Whistler, IM Tremblant, IM South Africa. After a while your body does what your body will do. In 5 trips to 70.3 Tremblant, I ran 1:40 4x and 1:38 once. Again, all kinds of different training, states of rest/taper etc, but the human body is pretty amazing in terms of how consistent it is for a given perceived exertion. You'd swear no one knew how to do sport without GPS and Powermeters and yes, I own all the gadgets, but I am more fascinated by human physiology and how the brain can so consistently control all this.