calories burned?

Discussion in 'Power Training' started by wnowak06, Dec 23, 2006.

  1. wnowak06

    wnowak06 New Member

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    anyone know how calories burned relates to power output. clearly they arent the same, b/c if they were I'd be producing 500 watts for an hour
     
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  2. ric_stern/RST

    ric_stern/RST New Member

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    mechanical energy expended = power (/1000) * time (s)

    Energy expended (Kcal) approx equals mechanical energy expended (in Kj) due to people riding a bike being ~ 20 - 25% efficient

    ric
     
  3. fastcat

    fastcat New Member

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    I always wonder about the accuracy of any display that tells me how many calories I've burned. They tend to work based on HR, weight and age, so take no account of fitness level, efficiency etc. So I tend to disregard them.

    Although, if you start from measured power output and work back to calories using Ric's formula then you should get a more meaningful measure of calories expended.
     
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