This is from 2 years ago at age 54 and shows about a 2% drop from a test done in 2003. I'm doing a new test next Friday so will be interesting to see if there has been any change. But even though my LT here is 148 @ 150 watts, I have done several multi-hour rides averaging 180+ watts and a pulse around 170. I recently did a 47min race with a 30 min average pulse of 179@238 watts, so not sure how comparable the numbers are between individuals, unless you actually have followed exactly the same test protocol. For example I also tried a 20 minute ftp test and came up with a pulse of 175 @ 255 watts, which should translate to an ftp of 242 and LTHR 166bpm