Peter Attia· MD
they did what's called av balance so arterial venous balance is where basically you're infusing a stable isotope and you're looking at essentially how much of that label is going into the muscle and then how much is coming out right and so you can determine the net balance and if you take a biopsy as well you can determine the fractional rate of protein synthesis and then by basically subtraction can determine what breakdown is so what they saw was when they gave a large amount of carbohydrate to people who had resistance trained they went from a negative protein balance to almost uh to be or sorry they went from having uh an increase in muscle protein breakdown to basically back to baseline and muscle protein breakdown and synthesis didn't change