Tuesday, August 05, 2008

Question:

If you walk a mile, does it burn the same number of calories as running a mile? Doesn't that make sense? Since you're moving the same amount of mass, over the same amount of distance, it would be the same amount of work, right?

Science people: Go!

Just about to call up the DA man
When I heard this woman singing a song

2 comments:

empeterson said...

Science people? Come on Matt, ask the runner. And you do technically burn more calories if you run. Actually, the equation is 100 calories per mile either walking or running (I think it partly depends on the person as well, but that's the basic starting point or average or whatever). So at first glance the answer seems to be no difference. However, because you raise your heartrate so much more when you run than when you walk, you end up burning more calories once you stop running than when you stop walking. So while per mile you are burning the same amount, you end up burning more overall when you run as opposed to when you walk.

Zhubin said...

This inefficiency is also why, when you sprint for a hundred feet to catch the bus, you start sweating after you stop. Your body is continuing to produce the energy it needs to sprint even though your brain has told it to stop sprinting, and all that energy dissipates in the form of heat.

In addition to what Empeterson said, there's also the issue of the extra calories burned getting your body up to the running rate, maintaining it, fighting increased wind resistance, etc.