Anyone know the calculations for this?
I bike sometimes. I have heard that I need to bike about 20 miles to obtain the same effort or amount of exercise as I would have if I ran 5 miles.
Anyone know the calculations for this?
I bike sometimes. I have heard that I need to bike about 20 miles to obtain the same effort or amount of exercise as I would have if I ran 5 miles.
That seems about right. I calculated about 18 miles of biking to 5 miles of running. But, I also think there are other factors like - weight, effort overall, level of runner that you are, age, etc.
The maximum speed I can bike for a long distance is 25km/h. So when I bike 50km in 2 hours (25km/h) my calorie burn is 900. The conversion factor for 25km/h is 3.5 so I would need to run 14.25km to burn 900 calories.
The maximum speed I can run at 10km/h but I can’t do this for 14km. Currently If I ran 14km I would have to slow down to 8km. 14km at 8km/h would take me 1:45:0 so my calorie burn biking would be 88% of what my running is.
While I can bike 50km per day no problem I couldn’t run 14km every day. So it looks like to me biking is the best way for me to burn calories.
Energy expenditure is about the only thing we can use to convert since running and cycling are so different. I couldn't find his actual study but here's a reference to one done by Dr. Coyle at UT. Hills and wind are not accounted for.
http://www.active.com/articles/convert-your-cycling-miles-to-running-miles-and-vice-versa
"Dr. Edward Coyle of The University of Texas, Austin determined average values of oxygen consumption by cyclists. He then applied these to develop the following table, which you can use to estimate the approximate caloric equivalence between running and cycling."
Cycling Speed Calories Conversion
M.P.H. / Cal. per mile / Divider
10 / 26 / 4.2
15 / 31 / 3.5
20 / 38 / 2.9
25 / 47 / 2.3
30 / 59 / 1.9
20 miles biking is worth 4 miles running, not 5.
All these conversions are absolute BS. You will get just about any answer depending on who you ask.
Old world ratio. 4 miles bike = 1 mile run = 1/4 swim.
well.. wrote:
All these conversions are absolute BS. You will get just about any answer depending on who you ask.
If the purpose of the workout is simply to add aerobic load then it makes sense to attempt to match (aerobic) net energy production like the poster above said.
Obviously the lack of weight bearing kills the specificity and a race specific workout would not make any sense, so aerobic load is about the only thing that does.
Thank you all