Jem Arnold
For this experiment we wanted to look at physiological response to the same workout in the LAB vs in the FIELD. It's fascinating! There are a lot of conflicting and equivocal findings, ultimately suggesting that there is a high degree of individual variability in how each of us produce power across modalities and conditions.
The 5-1 assessment we run is a submaximal intermittent step test that uses NIRS and VO2 to identify physiological thresholds and training zones. I've mentioned it before. We use the general terms ‘Aerobic Threshold’ (AeT) and ‘Anaerobic Thresholds’ (AnT) for the first and second breakpoints respectively, and a polarized 3-zone model between these thresholds. The … Continue reading Comparing VO2 Master Pro to TrueOne 2400 – Part 2
Before my recent surgery I performed a whirlwind of self-testing to answer some pressing questions before being off the bike for a while. Now that I'm in recovery mode I'm working through all the data I collected and trying to write up the more interesting findings. I was able to perform an informal pilot study … Continue reading Comparing VO2 Master Pro to TrueOne 2400 – Part 1
We previously looked at how measured pulmonary VO2 (pVO2) compares to WKO-modeled VO2 (VO2mod) during more-or-less constant work rate VO2max intervals. My conclusion was that modeling VO2 from power was unnecessary and would lead to less reliable and less valuable information than simply using power itself. This is mostly because VO2mod is unable to capture … Continue reading Modeled VO2 During Ramp Tests and Intervals
The charts we looked at last week have some 'hidden' interesting features that I want to go into more detail on. This will get into mathematical derivations of metabolic equations, estimating Gross Efficiency, fuel utilization between fatty acids & glucose, and aerobic & anaerobic contribution to power output. This might get complicated, but it will … Continue reading Deriving Power from VO2 and VO2 from Power
Spare Cycles 