Doubling up with running and biking landed me in a conversation about running vs biking muscle groups, PRE (perceived rate of exertion) and AT (anaerobic threshold). I have always maintained that biking is harder and therefore must use different muscles groups than the ones I have from running. I can run a marathon but I struggle on a bike for even a couple miles. I don't think anyone could say I have weak legs. My calves don't fit into boots or skinny jeans and my quads and butt dictate my jeans size more than my waist does! Don't get me wrong, I have always been proud of my runner's legs but what is the deal with biking? I was convinced that there must be some other muscle group that bikers develop. Apparently, I was wrong. A friend of mine tried to convince me that there was no secret biking muscle group, that you use your legs, just like running, to push a bike forward. So we both went home and did what anyone else would do to prove we were each right, GTS. According to this article on livestrong.com the same muscles are used, just in slightly different ways. Push vs pull and four stages in running to only two in cycling. This abstract points out that the PRE is higher and the VO2 max and AT happen earlier in biking, however, and that's why I feel so out of shape on a bike. Any cyclists feel the opposite is true when they hit the road running?
Either way, it's been a pretty great start to the week. Hopefully the weather holds through the week. Here's to lots of miles, get out there!