Sunday, April 25, 2010

Analysis Paralysis

More Graphing stuff, this time a user-definable 2d scatter plot. Above you will see the average effective pedal force vs Power. Col du Glandon at Marmotte is in blue and Alpe d'Huez is in red.

What I'm slightly surprised to find is that the amount of force applied to the pedals is roughly the same when totally knackered (AdH) versus when I was still fresh (Glandon) ... albeit I was suffering from the off.

Anyhoo, I'm working on a replay button (the time slider at the bottom) so you can watch how these things change over the course of the ride. This seems particularly interesting when looking at power/heartrate over a long ride (long enough for the 'lag' between CV response and effort to be nullified).

Hey ho.

2 comments:

Jim Ley said...

I'm not so surprised that pedal force is the same, most people tend to drop their cadence rather than their force when seriously dieing.

Remember the studies have shown the most efficient cadences at very sub maximal powers are lower adences. So when you're short on fuel, you go slower cadence, same force. It does suggest maybe you could've eaten more to keep your glycogen levels up.

Mark Liversedge said...

Ah ok.

I was *utterly* broken by AdH, I only kept going coz I'd trained so hard for the event and my lodgings were at the top :-)

I expected it to be a lot lower since I was so 'spent'.

As far as fuelling goes I doubt I had bonked, I was horribly hot though. I took on 9 750ml bottles of a mix of PSP22 and Go, 2 cliffbars and 6 gels over the course of the ride. I also drank about 2 lakes of water at Huez :-)