Could my 4DP results be incorrect due to not using a smart trainer?
I'd like to ask about my 4DP test results and whether the equipment I'm using could give me incorrect results.
I'm using an Elite ElastoGel trainer with my Cannondale perched on top. Fitted to my Cannondale is a Stages power meter and a Garmin speed sensor. I wear a Garmin HR monitor too. All of these sensors are linked up to my MacBook via ANT+, connected directly to The Sufferfest app.
I did the 4DP test roughly a month ago. It was one of the toughest things I've done on a bike, took me days to recover! Anyway, my results are:
- 5 Sec (NM): 1041
- 1 Min (AC): 550
- 5 Min (MAP): 400
- 20 Min (FTP): 318
- LTHR: 158
This is my Strava entry for the 4DP - https://www.strava.com/activities/2463293732
Talking to friends who have done other FTP based tests, my results appear far more impressive which makes me ask the question, could they be wrong? Would using a smart trainer be more accurate? I have a second Stages power meter on my other bike and the outputs are virtually identical. Until now I've put it down to physique, I'm 6' 4" with a rugby background, not your typical cyclist shape! My general fitness is good too.
Any comments would be greatly appreciated.