
Snowing outside, so had to do computrainer again today. Saw Uhl's post on doing a MAP test which reminded me that I have been meaning to do one for some time.
I constructed a simple MAP test erg file, ramping from 100-200 watts with 25 watt jumps per minute, then 5 watt jumps every 15 seconds.
The test protocol is simple, just match the required watts until you can no longer do so.

Then look at the Pavg for the last minute.
The results where a bit low. Only managed 346 watts in the last minute.
According to Ric Stearns MAP info page here that results in the following.
Zone | Min Watts | Max Watts | Ride type | Level |
Recovery | 0 | 138 | Recovery | Recovery |
Zone1 | 138 | 190 | Long Endurance 1.5-6hrs | |
Zone2 | 173 | 225 | Core Endurance | Endurance |
Zone3 | 208 | 242 | Tempo Training | |
Zone4 | 225 | 260 | Long TT Power | Intensive |
Zone5 | 242 | 294 | Shorter TT Power(and MAP/VO2Mx work) |
Zone6 | 277 | 381 | MAP training (VO2Max efforts) | Maximal |
Zone7 | 381 | 519 | Anaerobic Work Capacity (<= 30s) |
Estimated power outputs for distances based on MAP |
3km | 89-91% of Map | 308 | - | 315 | Watts |
4km | 88-91% of Map | 304 | - | 315 | Watts |
16.1km | 75-81% of Map | 260 | - | 280 | Watts |
40.2km | 72-77% of Map | 249 | - | 266 | Watts |
80.5km | 64-72% of Map | 221 | - | 249 | Watts |
161km | 60-68% of Map | 208 | - | 235 | Watts |
Which seriously (I think) under estimates my power zones. Even assuming a (huge!) drop from this summer's TT performances, for short TT's I was doing 340 Pavg for 12-14 minutes (8-10K TTs).
Playing with the numbers show that to achieve that performance, according to MAP test protocol, would require a MAP test result of 400 watts Pavg in the last minute...!! Which I'm sure would not have been possible even at my summer peak.
I suspect this is a product of my power profile. Very low numbers on the left (5 second and 1 minute) and quite high on the left (5 minute and 1 hour..) I can go a (very) long time at FTP (say 320 watts) and just above (up to 350 watts), but as soon as I go above a certain point (say 370 watts) I run out of steam very quickly.
This also impacts on racing, both road (where short hard hills that other riders power up can cause me to burn a match) and on the track.