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Table 4 Protein (Nitrogen) Balance

From: Effect of a LoBAG30 diet on protein metabolism in men with type 2 diabetes. A Randomized Controlled Trial

  Ingested Metabolized % Metab
  g Nitrogen g Protein g Nitrogen g Protein  
A Calculated Computer Tables Measured Calculated  
Control Pre 17.0 94.2 ± 5.1 16.0 ± 1.0 88.5 94
Control Post 17.7 98.0 ± 5.0 16.9 ± 1.1 93.5 96
LoBAG Pre 17.7 98.2 ± 4.0 18.1 ± 1.3 100.1 102
LoBAG Post 35.4 195.9 ± 10.8 26.5 ± 11 146.5 75
LoBAG Post* 31.3 195.9 ± 10.8 26.5 ± 11 165.6 85
  Ingested Metabolized % Metab
  g Nitrogen g Protein g Nitrogen g Protein  
B Measured Calculated Measured Calculated  
Control Pre 17.4 ± 0.9 96.2 20.1 ± 1.3 112.2 116
Control Post 18.1 ± 0.9 100.1 21.5 ± 2.0 118.9 119
LoBAG Pre 18.1 ± 0.7 100.1 20.3 ± 1.0 112.3 112
LoBAG Post 31.8 ± 2.5 175.9 29.4 ± 1.5 162.6 92
  1. A. Protein content of the meals was estimated using Nutritionist Pro version 2.0: (First data bank: Hearst Corporation, San Bruno, CA); Nitrogen in food was calculated using 5.53 g protein/g N as a conversion factor [14]; *Nitrogen in food in the LoBAG post diet also was calculated using the conventional 6.25 g protein/g N as a conversion factor, since the majority of the additional protein in the diet was animal protein (muscle); body water was calculated according to Watson [15]; total urine nitrogen was determine by summing the urine urea nitrogen concentration,% nitrogen in creatinine (37%) and% nitrogen in uric acid (33%). Fecal nitrogen was measured directly. The contribution of nitrogen from excreted ammonia, amino acids and hippuric acid was added as indicated in methods.
  2. B. Protein content of the meals was determined directly; body water was determined directly; total urine nitrogen and fecal nitrogen were determined directly (see text for methods).
  3. % Metabolized was calculated as g N (Metabolized/g N Ingested) × (100).