Accuracy through cals burn on gym stationary bike?
08-12-21, 01:08 PM
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Accuracy through cals burn on gym stationary bike?
Ok so i’m very confused. Today I did a small 25 minute session on the stationary bike at the gym. I averaged 6.5 miles in that time and my average speed according to the machine was 15.6 mph at a medium resistance. I looked at the watts after and it said 90? How is that possible and how many calories do you think I actually burned? I’m 5’8, 135 pounds and a female. I was definitely sweating and the machine only had me at burning 110 calories in that time period.
08-13-21, 01:15 AM
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Welcome to the forum. This question gets asked a lot, and I have to admit I'm no expert on it. But 25 minutes probably won't burn as many calories as most of us want, and to complicate things more, those numbers are usually pretty far off on a gym bike.
08-13-21, 08:26 AM
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Impossible to tell from those numbers as they're not calibrated or accurate. Running a 5k in that time would burn just over 300 Cals, 4k about 240. If you're a runner you could gauge your effort by comparing heart rate running vs riding. Unfortunately, sweating indoors is not a good indication of power output.
08-13-21, 11:40 AM
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As I said in the other thread, 110 kcal for 25 minutes at 90w average power is in the ballpark. For comparison, I found a ride of mine that was relatively the same time and power, measured with a calibrated power meter:
Height, weight, gender, and sweat rate are all irrelevant. Just total work.
Height, weight, gender, and sweat rate are all irrelevant. Just total work.
08-14-21, 12:28 PM
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If you multiply the average Wattage by 3.6 that roughly gives you the Calories burned per hour. Using this formula, 90W for 25 minutes gives 135 Cal.
Also, sweating on a stationary with no ventilation is already to be expected at a very mild effort, which is what the 90W most likely is for you.
Also, sweating on a stationary with no ventilation is already to be expected at a very mild effort, which is what the 90W most likely is for you.
