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  1. #1
    OSTIE's Avatar
    OSTIE is offline Senior Member
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    formula for calculating heart rate???

    Alright, ive seen, plenty of times, people list a formular for calculating what your heart rate should be at when doing cardio.

    200 - AGE * .7

    My question is, are you all following order of mathematical operations when calculating this, or going left to right? For instance, im 21 yrs old so if I did it by order of operations
    (200 - ( 21 * .7 )) = 185.3
    And from left to right:
    ((200 - 21 ) * .7) = 125.3

    Which one do you guys go by?

    Thanks
    -ost

  2. #2
    Elliot's Avatar
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    (220 - age) * .7 = HR

  3. #3
    OSTIE's Avatar
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    That means for proper fat loss, my heart rate while doing 40min of cardio should be 125? That is extremely low in my opinion, how can anyone do 40min of cardio at such a sluggish pace. Most people can reach a heart rate that high just doin an exciting crossword puzzle

  4. #4
    Elliot's Avatar
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    umm 220 - 21 = 199 * .7 = 139.3....

  5. #5
    Kim2884 is offline Female Member
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    Quote Originally Posted by OSTIE
    That means for proper fat loss, my heart rate while doing 40min of cardio should be 125? That is extremely low in my opinion, how can anyone do 40min of cardio at such a sluggish pace. Most people can reach a heart rate that high just doin an exciting crossword puzzle
    The formula is two hundred TWENTY minus age *.7 Your numbers were off. Although, 125 is still in the "fat burning zone," which is considered 60-70% max heart rate. And, although you won't need be running your balls off, it definitely takes more than a crossword puzzle to get there.

  6. #6
    Elliot's Avatar
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    Quote Originally Posted by Kim2884
    The formula is two hundred TWENTY minus age *.7 Your numbers were off. Although, 125 is still in the "fat burning zone," which is considered 60-70% max heart rate. And, although you won't need be running your balls off, it definitely takes more than a crossword puzzle to get there.

    kimmy said bals

  7. #7
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    Quote Originally Posted by Elliot
    kimmy said bals

    thanks for the laugh bro

  8. #8
    Kim2884 is offline Female Member
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    hehe...BALLS

  9. #9
    Elliot's Avatar
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    Quote Originally Posted by Kim2884
    hehe...BALLS

    i should proof read my threads.. wait that would take too much effort..

  10. #10
    I'm in a Hurry!'s Avatar
    I'm in a Hurry! is offline Junior Member
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    the complete one I know is
    220- age - HR *.65-80 (depends of your age) + HR = 1(the 0.65)
    = 2(the 0.80)
    You shoud be between the two number.

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