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Table 3 Effects of phenylalanine on the circulating hormones

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
Glucagon (ng/L) 62.9 ± 7.81 66.0 ± 19.1 90.1 ± 29.1* 63.6 ± 21.8 73.5 ± 18.6* 52.3 ± 8.78 92.2 ± 18.8* 61.0 ± 7.78 92.3 ± 27.2* 61.4 ± 19.7 0.04 0.03 0.04
F value 0.078 5.7 3.6 7.8 7.7    
Cortisol (μg/L) 106 ± 52.2 113 ± 32.7 109 ± 41.4 77.6± 23.7 146 ± 53.2 91.9± 34.9 173 ± 70.9 122 ± 27.5 157 ± 51.3 89.5 ± 31.3 p < 0.01 0.05 0.11
F value 0.072 1.5 4.4 4.0 7.0    
Growth hormone (μg/L) 1.30 ± 2.01 0.14 ± 0.08 1.44 ± 2.80 0.30 ± 0.46 9.72 ± 6.86 13.1 ± 5.61 13.4 ± 14.2 14.2 ± 8.5 1.51 ± 0.72 1.13 ± 1.12
  1. Values are mean ± SD (n = 6)
  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