Software for Cyclists
Join Date: Dec 2003
Location: Redding, California
Bikes: Trek 5200, Specialized MTB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Originally Posted by reich17
Are us cyclists like automobiles? What I'm asking is, if I drive my car a distance of 200 miles at 50 miles an hour I use far less gas than if I drove 100 miles an hour even though I got there twice as fast, right?
Is it the same with calories burned during excercise?
Interesting question. The answer, as I see it, is basically "Yes".
I've plugged a couple of different scenarios into the Calories and Watts Calculator
included with my CycliStats program, and here's what I come up with:
Assume a ride of 50 miles, over "Rolling" terrain (1800 feet of climbing).
Riding at 15 mph would burn 1772 total calories - 35.4 calories per mile, or 531.6 calories per hour.
Riding the same route at 20 mph would burn 2397 total calories (35% more) - 47.9 calories per mile, or 958.8 calories per hour.
The reason, as suggested in an earlier post, is that air resistance increases exponentially as speed increases.
FWIW, I drove my WRX across Nevada a few years ago on Hwy 50 (the Loneliest Road in America), and probably averaged close to 100 for most of the route (and got up to 140 briefly, until I started thinking about blowouts, and unfenced cattle
). The gas mileage suffered, but it sure was fun!