🚀 go-pugleaf

I can't be sure, but I think that they use the basic formulas you've given, and
they  neglect metabolic factors.  THis is why they want you weight for a stairclimber or exercise bike.  For example, If they assume you take 8" steps, and there are 20 steps per floor, then from knowing your weight, they can calculate the
work that you did.  Using my weight (Mass) and the above assumptions, I came
out to within 7 calories of what the Stairmaster says I do.

	The airdyne ergometers that schwinn has are much more accurate, because
they work on a principle known as the fan laws, which state that Work = Velocityto the third power, so using a speedometer, they can tell you how much energy you are expending.

	Again, the calculations that any machine arrives at are based on how
much work (at a minumum, assuming no friction losses, improper form, etc.)
is required to do that activity.  You may burn more than what they say.

	In any event, that is how they calculate their numbers, I think.  If I
am wrong, please correct me, it wouldn't be the first time.

	Finally, if all you ahve to say is some smart remark like OK Mr. Physicssave it.

Magdi
magdi@uxh.cso.uiuc.edu