TABLE 3.

Fasted plasma amino acid concentrations of healthy young adults who consumed WMJ and PLA daily, each for 2 weeks¹

Amino acid, μmol/L	PLA	WMJ	P value
Alanine	290 ± 55	241 ± 35	0.007
Arginine	58 ± 10	64 ± 14	0.08
Asparagine	72 ± 11	68 ± 12	0.42
Aspartic acid	2.0 ± 1.3	1.4 ± 0.4	0.12
Citrulline	24 ± 4.6	24 ± 4.5	0.86
Glutamic acid	23 ± 9.5	19 ± 7.4	0.06
Glutamine	511 ± 67	488 ± 70	0.06
Glycine	191 ± 28	185 ± 44	0.56
Histidine	72 ± 9.3	71.9 ± 10	0.65
Isoleucine	53 ± 12	51 ± 12	0.53
Leucine	101 ± 20	95 ± 20	0.44
Lysine	143 ± 36	134 ± 22	0.53
Methionine	20 ± 5.1	19 ± 3.5	0.45
Ornithine	35 ± 6.7	34 ± 10	0.79
Phenylalanine	44 ± 8.4	42 ± 6.7	0.44
Serine	81 ± 18	77 ± 8.3	0.40
Threonine	127 ± 28	117 ± 19	0.31
Tryptophan	40 ± 6.0	38 ± 6.5	0.33
Tyrosine	45 ± 14	40 ± 8.7	0.11
Valine	177 ± 22	176 ± 35	0.92
ADMA	0.50 ± 0.5	0.48 ± 0.05	0.67
ADMA:arginine	0.009 ± 0.002	0.008 ± .002	0.28

¹Data were analyzed using a linear mixed-effects model with subject ID as random effect and treatment and treatment order as fixed effects. P values are for the main effect of treatment. No visit order effects were observed (P > 0.05). Values are means ± SDs; n = 12. ADMA, asymmetric dimethylarginine; PLA, placebo; WMJ, watermelon juice.