Re [0] how do they measure this reliably during a race, especially the C-isotopes in the breath?
From the picture it looks like he is only wearing a watch and there is perhaps a little bulge on his left side.
Re [0] how do they measure this reliably during a race, especially the C-isotopes in the breath?
From the picture it looks like he is only wearing a watch and there is perhaps a little bulge on his left side.
They collected samples every 5k in the 30k long run before the marathon, see Substrate section in http://athlete.maurten.com/