double labelled water

sharonleitch2016

Can anyone explain this to me please.

malibu927

?

Ready2Rock206

Maybe you can explain what you'd like us to explain?

AnvilHead

Wikipedia is your friend: https://en.wikipedia.org/wiki/Doubly_labeled_water

(I just typed "double labeled water" into the search box in Google and voila!)

lumenosis

Basically H and or O molecules in water are completely or partially replaced with a non radioactive isotope of that element. The isotope concentration is then measured from bodily fluids, (pee mostly). Based on the rate of elimination of the isotope a very accurate base metabolic rate can be calculated. Google John Speakman, he has done some really interesting research about obesity. http://www.abdn.ac.uk/energetics-research/research/obesity/