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There is no metabolic equation for swimmers because every swimmer swims at a different efficiency.

The easiest way to do it would be to check your heart rate somewhere towards the end of your 15 minutes. Do a 15-30 second count because your HR drops QUICK after exercise. (Subtract about 12 beats per minute from your heart rate (BPM) because your heart doesnt have to work so hard to return blood when under water and it will mess up the calculation if you dont compensate for this).

HR is nearly linear to the amount of oxygen you consume (VO2) so find a reference chart of VO2 vs Heart Rate online and see what your VO2 is at the exercise heart rate, which will be in the units "ml of O2/kg of body weight/min". From that, calculate how many Liters of Oxygen you consumed during the 15 minute swim using your body weight and minutes swimming. Once your have calculated the Liters of Oxygen you consumed you know how many calories you burned because 1 liter of oxygen = 5 calories burned.

If you know how to do math, its all right there :) The hardest part is finding the VO2 vs HR chart.

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11y ago
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16y ago

That depends on many factors as body age, weight and speed

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14y ago

It depends on how active you are when you're swimming, but maybe 300 kcal an hour. It altso depends on your age, height, weight, and so much more.

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14y ago

about 900 calories an hour

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Q: How many calories are burned swimming the freestyle for 15 minutes?
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