Quote:
Originally Posted by mtechnica
I was under the impression that by definition 1hr power is = FTP, if you can’t hold the power for an hour it isn’t your FTP? Like the above poster claimed he had a 300+ watt ftp yet averaged 260 watts in a 40 minute breakaway due to “factors”... this is what I’m talking about.
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No. That's a very rough shorthand that people use, and it's extremely misleading. Coggan, who developed the term/analysis FTP, defines it as “the highest power a rider can maintain in a quasi-steady state without fatiguing.”
Your FTP (functional threshold power) is the power output at which you are at your aerobic threshold - the max output of your body's ability to fuel your muscles aerobically - that is, with oxygen, without dipping into other fuel sources.
Wouldn't it be a little strangely coincidental for this threshold to be able to last for the amount of time we use to divide up a day? Or for it to be the same for everybody?
TTE is the other part of the equation: time to exhaustion - how long you can ride at your threshold.