A couple of quick thoughts:
- your submax test shows 50:50 ratio of CHO:fat. RER of 0.85 is 50:50 (0.70 is 100% fat, 1.0 is 100% CHO), so you tend to hover around that point. You do bump up to a higher percentage of CHO at times, but nothing too far off the 50:50. If you took a gel right before the test, this would make CHO available and maybe alter your normal RER response.
- Perhaps a bit high on the CHO side at low intensities, but I usually don’t worry too much about that during these types of tests as there is often nerves, anticipation, a bunch of scientists poking you, etc.
- In line with #2, your RER is lower in the VO2max test during sub maximal exercise levels (would be nice to see your VE, VO2 and VCO2 values for all tests if you have them too. It can provide some insight into your efficiency.
- I’m not sure you reached VO2max only seeing your RER data (we usually shoot for 1.10 - 1.15), but I’m sure you needed to stop! That being said, you do switch to CHO metabolism predominantly after 435W. That’s a great power number.
- Nice work on your TTE test, not sure if there is much to be gleaned from the RER data alone, but the high-intensity exercise would require a greater contribution from glycolysis.
I’d be happy to breakdown the tests in a bit more detail if you have all of the data… See if your gas exchange threshold(s) match well with your FTP, look at your efficiency, etc.