Loss of body nitrogen on fasting
1979
Forbes, Gilbert B. | Drenick, Ernst J.
Total body nitrogen declines exponentially during fasting; a small fraction is lost rapidly (t-1/2 of a few days) and the remainder is lost slowly (t-1/2 of many months). The obese lose nitrogen and weight at a slower relative rate than the nonobese; the ratio of nitrogen loss to weight loss during an extended fast is inversely related to body fat content, being about 20 g/kg in the nonobese and about 10 g/kg in those with body fat burdens of 50 kg or more. The loss of nitrogen on a low protein-calorie adequate diet can also be described in exponential terms, and this function allows an estimate to be made of the nitrogen requirement.
显示更多 [+] 显示较少 [-]