Have you determined if the error is in the WHO or Durnin and Passmore figures themselves or in this adaptation. If the calculator has an error, I`m sure that that those that run this site would be interested, but if the problem is with the formula itself, that`s a different matter.
What were the exact parameters that you entered in that gave your strange results.
I'm talking about the Calorie Requirements calculator where you have to choose an activity for each of the 24 hours of the day
to know the total calories burned. The BMR calculation is correct.
The problem is that it overestimates the calories burned by very light, light and moderate activities.
So I tried to simulate a sedentary lifestyle with 10 hours of sleep and 14 hours of internet surfing.
The result should be that very little calories are spent doing nothing but sitting in front of the computer
In fact both the Mifflin, Harris-Benedict and WHO equations use a x1.2 factor for sedentary lifestyle.
So someone with a BMR of 1660 calories and living a sedentary lifestyle should burn, according to all equations,
1992 calories. Meaning 332 calories from activities (would you expect more from sitting the whole day?)
Sedentary lifestyle includes walking and talking. So someone doing nothing but sleeping for 10 hours and
surfing the web for 14 hours should burn even less than that. Probably 100 extra calories above BMR
But the exrx calculator for someone with a BMR of 1660 and 10 hours of sleep and 14 hours of computer yelds 2180
calories. Way more than the more active 1.2 sedentary lifestyle figure. Meaning 520 extra calories.
That's like adding a whole 2 hours workout everyday to a sedentary lifestyle, not a small difference.
Indeed the calculator thinks that 1 hour of very light activity burns 35-40 extra calories while in truth it burns 20-25 extra
calories. Seems like a small difference but it adds up quickly