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

Table 3 Effects of phenylalanine on the circulating hormones

	0 min		30 min		60 min		90 min		150 min		Two factor ANOVA
	0 min		30 min		60 min		90 min		150 min		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	–	–	–

Values are mean ± SD (n = 6)
*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

ISSN: 1550-2783