Sunday, March 29, 2009

Ride Cluster Analysis and Matches

I was fooling around with some ride power cluster analysis and compared the "Dan's Macabre" Sunday ride which is usually fast and difficult for me to finish with the lead group. It covers some rolling terrain in Gwinnett/Barrow/Walton Counties.

In comparing the group ride with my own solo effort on the same course, the effects of the group ride are pretty obvious. My solo effort showed a lot of Low Force/Low Cadence (II) from me having to grind up hills. My power was above threshold a lot of the time and with the group we are going faster so I am clustering in the High Force/High Cadence (I) area as it is a bit harder to keep up and I have to turn big gears fast.

The other thing that is obvious is that I am spending much more time at higher power (>350w) in the group ride because it is a hard ride. My solo effort allows me to pace myself and not react to others driving the pace. My TSS for the group ride is around 220 and the solo was 200.

The second quadrant analysis is of a solo ride I do often from my house. It is a 55 mile ride from home to roswell and back. There are lots of hills and I am pretty bushed by the end. My TSS for this ride is around 191. I was surprised to see so much Low Force/Low Cadence power since I was solo and I was impressed by the amount of hill grinding I am doing over threshold in the High Force/Low Cadence quad. Basically I suck on hills.

The last neat graph shows a match burn graph plotting my 30 sec rolling average power versus time and elevating my power values to the 4th power to accentuate my efforts. It is pretty clear that this is a hard ride for me and that I burn a lot of matches on this one. My maximum aerobic power (MAP) is around 380w (2.0 on the graph) so it is easy to tell my matches.

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