This is the first light week after the first 3 week period.  Today’s session was a 30 minute “time trial” on the turbo trainer – The Long Scream Sufferfest video.  Training Peaks tells me that my 20 minute best average power during the session was 277 Watts – the last 20 minutes not surprisingly.  Based on that, my FTP is now up to 263 Watts.

The calculation for FTP is 95% of the best average 20 minute power.