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Thread: Calories

  1. #1
    The Iceman cometh! Bop Bop's Avatar
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    Calories

    Looking for some help:

    A part of my bike journal is the amount of calories I burn each ride. What excatly am I burning? If it is fat, is there a way to calculate the weight of fat per calorie or hundred calories (so many calories = how many pounds/ounces of fat) I am burning?

    Thanks,
    "Angel, Bop Bop loves you!!!"

  2. #2
    Castiron Perineum Bockman's Avatar
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    It depends upon what your heart rate is during the ride, among many other variables. Generally speaking, you are burning a mixture of fat and carbohydrates-- mostly carbs.

    Dave

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    Senior Member Pedal Wench's Avatar
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    Not sure if this what you were asking, but you need to burn 3,500 calories to lose one pound of weight - typically fat pounds are the first to go. Your body needs a certain amount to maintain base functions (breathing, pumping blood, lifting the remote) so you need to account for that - this varies on your basic weight, but if you burn or eliminate 3,500 calories, you'll lose one pound.

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    bbp
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    Quote Originally Posted by bunabayashi
    It depends upon what your heart rate is during the ride, among many other variables. Generally speaking, you are burning a mixture of fat and carbohydrates-- mostly carbs.

    Dave

    until you run out of carbs then you'll be burning fat and muscle

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    cab horn
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    No offense but it's impossible to tell how many calories you are burning each ride. It depends on a multitude of factors.

  6. #6
    Virtulized geek MsMittens's Avatar
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    As a rough estimate (and some people consider this a rule of thumb), an hour ride = 500 calories. That said, factors like wind, hills, speed, bike weight, consistency, intesity, humidity, heat, cold, etc. can alter this. For a general idea (and it is very general -- not 100% accurate) I sometimes use Bicycling's Online Ride Calorie Calculator. (Hey.. I like numbers sometimes. Makes me feel like I achieve something )

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    In the heart rate monitor book it says (and I'm recalling from memory here) that 1g fat liberates 7 calories and 1g carbs liberates 4 calories. (I hope that's right) obviously the ratio of fuels burned depends on the intensity of the workout.

    The real way to work these things out is with the respiratory quotient. Which I can't remember at the moment. but it analyses how much oxygen is being used to to liberate how much energy.

    Check a basic biology book for a better description. I'll go and find mine now.

  8. #8
    The Iceman cometh! Bop Bop's Avatar
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    Thank you everyone. I appreciate the info. Looks like I have some things to check on. Thank you again.
    "Angel, Bop Bop loves you!!!"

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    Senior Member joejack951's Avatar
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    Just got my Polar S725. My 1 hour, 10 minute ride burned 1172 calories according to it. 167 bpm average HR, 1060 feet of climbing, 21 miles. No avg. speed number b/c my speed sensor wasn't picking up for some reason and I rode in the dark so I couldn't check the computer to see that it wasn't reading.

    Might give you a starting point for a comparison.

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    The Iceman cometh! Bop Bop's Avatar
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    Joejack,

    Thanks, it does!
    "Angel, Bop Bop loves you!!!"

  11. #11
    SSP
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    40 calories per mile is another "rule of thumb". A little less if you're riding slow, or are a lightweight. A little more if you're riding fast, or weigh more than average.

    FWIW, I built a fairly sophisticated Calorie & Average Watts Calculator into my CycliStats ride log program ( http://www.CycliStats.com ).
    CycliStats.com - Software for Cyclists
    WeightWare.com - Weight Management Software

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    The Iceman cometh! Bop Bop's Avatar
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    SSP,

    Thanks, I check it out.
    "Angel, Bop Bop loves you!!!"

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    Senior Member Frodocious's Avatar
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    http://www.caloriesperhour.com

    is a good way of estimating calorie usage for all sorts of activities

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