Riding Heaven's Highways on the grand tour
Join Date: Aug 2006
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Originally Posted by bfloyd
Thanks. Does riding at a recovery level of 60 ~ 65% of max dip into the glycogen stores?
It could if you are untraned or ride long enough with out eating. I would think that would have to be one really long ride though. Basically, at 60-65% of your MHR, you are burning some glucose, but mostly fat for energy. If you ride long enough to use up the glucose you have available in your blood system, then you would start depleting your glycogen stores. I believe the average person will have somewhere between 1600 and 2000 calories stored as glycogen (both muscle and liver storage). Assuming that you are burning 40% glucose/glycogen and 60% fat for energy that glycogen storage is good for another 100 -125 miles (2000/.4 = 5000/40 Cals/mile). That's after using up the blood glucose levels.
Most people are not going to ride that far.
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