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Table 2 Effects of phenylalanine n the blood biochemical parameters

From: The effects of phenylalanine on exercise-induced fat oxidation: a preliminary, double-blind, placebo-controlled, crossover trial

  0 min 30 min 60 min 90 min 150 min Two factor ANOVA P value
  Phe Placebo Phe Placebo Phe Placebo Phe Placebo Phe Placebo time treatment interaction
Glycerol (mg/L) 3.34 ± 1.55 3.84 ± 1.60 3.24 ± 1.38 3.48 ± 1.77 5.34 ± 0.82 4.83 ± 1.51 15.15 ± 3.02* 7.30 ± 1.93 4.06 ± 1.59 3.64 ± 1.18 p < 0.01 0.022 p < 0.01
F-value 0.25 0.056 0.27 62 0.18    
FFAs (mEq/L) 0.58 ± 0.16 0.50 ± 0.21 0.55 ± 0.17 0.44 ± 0.15 0.39 ± 0.11 0.42 ± 0.20 0.69 ± 0.28 0.64 ± 0.33 0.79 ± 0.30 0.74 ± 0.17 p < 0.01 0.65 0.67
F-value 0.35 0.82 0.059 0.15 0.16    
Total ketone bodies (μmol/L) 120 ± 109 113 ± 143 160 ± 143 92.2 ± 97.5 114 ± 50.4 60.3 ± 24.1 169 ± 86.0 121 ± 107 387 ± 401 333 ± 412 p < 0.01 0.62 0.99
F-value 0.0043 0.33 0.21 0.17 0.21    
Glucose (nmol/L) 5.08 ± 0.48 5.18 ± 0.35 5.21 ± 0.53 5.09 ± 0.67 4.89 ± 0.56 4.87 ± 0.63 5.35 ± 0.83 4.89 ± 0.51 5.15 ± 0.56 5.04 ± 0.66 p < 0.01 0.69 0.32
F-value 0.075 0.12 0.0029 1.8 0.10    
Lactate (nmol/L) 1.17 ± 0.22 1.18 ± 0.18 1.24 ± 0.18 1.07 ± 0.31 3.72 ± 1.81 3.49 ± 1.05 3.46 ± 2.59 2.70 ± 0.83 1.13 ± 0.14 1.12 ± 0.15
  1. Values are mean ± SD (n = 6). FFA = free fatty acids
  2. *p value for the two factor analysis of variance and Tukey’s post-hoc test if data were normally distributed, and Friedman test if not