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Thread: Tough question

  1. #1
    baederp is offline Member
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    Default Tough question

    I had a client ask me a question I could not answer. 00:15 seconds waving a 2" 40 rope in each hand is equivalent to what sprint.

    I told him I did not know off hand and the best guess I could give him is to get a heart rate monitor and measure 15 seconds on the rope versus 15 seconds sprinting.

  2. #2
    mc
    mc is offline Senior Member
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    Default More descriptive headers next time, please

    Not sure what you mean by "equivalence" - could you clarify what you're looking for?

    mcbegin2dig.blogspot.com

  3. #3
    Semonides is offline Senior Member
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    Default Tough question

    what the heck kind of question is that? The answer is a boot to the head.

    But if you do somehow figure it out, could you tell me how much rhythmic dancing would be equivalent to training and then defeating Alexander Karelin?

  4. #4
    mc
    mc is offline Senior Member
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    Default Tough question

    oooo rip - is this what you're like in the classroom??

    when do you get back in there?

    mc

  5. #5
    DanTheMan is offline Member
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    Default Tough question

    Don't start with this down talking bull again, it's pointless. If no one knows or has an answer just say so. Don't down him for asking something that you don't know the answer to. Just say you don't know.

  6. #6
    faizalenu is offline Senior Member
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    Default Obviously there is some variation but ....

    It really depends on what you are equalizing:

    * Calories burnt (if weight loss is the goal), you could probably compare the work done in each an come up with and answer. I don't know why more people done ever compare the actual "physics" definition of work. For a rope, E = f(Weight of rope, amplitude of wave, frequency of wave). For a sprint E=change in kinetic energy = F(v^2).

    * I could see the heart rate being used - even though I don't know how to interpret what it means or how accurate it can be measured or applicable the result would be. It is the same as asking the question how long would I have to full sprint to raise my HR up to the same level that :15 of rope waving. I am sure some O2 use would also be interesting but equally hard to measure.

    * Because one uses primarily the legs and one uses primarily the arms, while the equilancy determination is interesting, I don't see swapping one for the other giving the same results.

  7. #7
    faizalenu is offline Senior Member
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    Default Obviously there is some variation but ....

    It really depends on what you are equalizing:

    * Calories burnt (if weight loss is the goal), you could probably compare the work done in each an come up with and answer. I don't know why more people done ever compare the actual "physics" definition of work. For a rope, E = f(Weight of rope, amplitude of wave, frequency of wave). For a sprint E=change in kinetic energy = F(v^2).

    * I could see the heart rate being used - even though I don't know how to interpret what it means or how accurate it can be measured or applicable the result would be. It is the same as asking the question how long would I have to full sprint to raise my HR up to the same level that :15 of rope waving. I am sure some O2 use would also be interesting but equally hard to measure.

    * Because one uses primarily the legs and one uses primarily the arms, while the equilancy determination is interesting, I don't see swapping one for the other giving the same results.

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