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Table 4 Time course changes in plasma concentrations of selected amino acids in healthy controls 1

From: Muscle p70S6K phosphorylation in response to soy and dairy rich meals in middle aged men with metabolic syndrome: a randomised crossover trial

  Soy (n = 10) Dairy (n = 10)
Time (min)
  0 30 60 180 240 0 30 60 180 240
  μ mol/L
Arginine 11.0 ± 1.0 14.6 ± 2.3 13.0 ± 1.1 10.7 ± 0.8 10.3 ± 1.4 9.6 ± 0.9 9.3 ± 0.5 10.7 ± 0.9 11.3 ± 1.5 8.5 ± 0.8*
Asparagine 7.9 ± 1.0 9.8 ± 0.6 9.9 ± 0.5 7.5 ± 0.4 6.7 ± 0.6 7.0 ± 0.5 7.1 ± 0.5 8.4 ± 1.0 8.5 ± 0.8 6.5 ± 0.5
Serine 15.8 ± 2.0 17.1 ± 1.5 16.9 ± 1.1 14.1 ± 0.8 11.0 ± 0.5 14.1 ± 1.5 13.4 ± 1.2 16.4 ± 1.7 16.4 ± 1.4 13.8 ± 0.9
Glutamine 95.3 ± 2.4 101.7 ± 3.9 108.2 ± 2.2** 105.0 ± 6.4 96.9 ± 4.4 104.9 ± 6.2 96.7 ± 3.7 111.0 ± 6.8 121.8 ± 9.1 105.0 ± 5.4
Taurine 10.2 ± 0.8 9.9 ± 1.0 10.2 ± 1.2 9.3 ± 1.3 10.5 ± 1.2 10.8 ± 1.1 7.6 ± 0.4** 8.5 ± 1.0 9.8 ± 0.9 9.6 ± 0.8
Glycine 43.4 ± 2.1 48.0 ± 3.0 47.5 ± 2.0 46.5 ± 4.4 37.6 ± 2.9 47.5 ± 2.7 37.6 ± 2.3* 42.3 ± 3.2 43.8 ± 3.4 37.2 ± 1.6**
Proline 73.3 ± 4.7 86.1 ± 4.7* 93.6 ± 4.8** 82.3 ± 4.2 75.5 ± 3.9 69.6 ± 3.5 81.5 ± 3.7 91.0 ± 4.2* 112.6 ± 7.6** 92.5 ± 3.3**
Lysine 20.3 ± 2.5 21.7 ± 2.8 20.6 ± 1.5 18.5 ± 2.5 18.1 ± 2.5 17.4 ± 2.2 18.1 ± 1.6 22.3 ± 1.9 21.8 ± 3.2 17.5 ± 2.2
Valine 92.5 ± 7.0 98.0 ± 4.5* 102.6 ± 4.4* 91.4 ± 4.4 84.6 ± 5.2 89.1 ± 6.0 89.9 ± 5.0* 110.3 ± 7.5* 119.3 ± 6.3** 103.4 ± 5.5*
Isoleucine 35.0 ± 3.1 46.5 ± 3.3 47.3 ± 2.9* 39.4 ± 2.5 36.9 ± 2.5 31.3 ± 2.5 39.0 ± 2.6** 46.7 ± 3.5* 48.1 ± 3.0* 36.6 ± 1.8
Leucine 80.3 ± 6.2 92.2 ± 5.0 91.9 ± 4.5 74.8 ± 3.7 68.4 ± 4.2 72.0 ± 4.9 84.6 ± 4.8** 101.0 ± 7.3 103.7 ± 6.0* 83.9 ± 5.3
∑BCAA 206.2 ± 17.3 236.7 ± 16.3 241.7 ± 16.9** 205.5 ± 15.3 190.0 ± 14.0 192.4 ± 17.2 228.8 ± 17.1 257.9 ± 19.8* 265.4 ± 20.4* 226.1 ± 19.1*
∑Total AA 2 545.5 ± 52.9 577.0 ± 28.9 597.3 ± 20.6 526.5 ± 25.8 486.6 ± 28.8 505.8 ± 29.0 527.5 ± 28.9 597.5 ± 37.1* 658.2 ± 38.7** 540.5 ± 24.0*
  1. 1Means which are statistically different from baseline (0 min) for each meal are indicated by: * P < 0.05, ** P < 0.01.
  2. 2Total AA: sum of measurable amino acids.