Table 5.

Effect of Met and GAA supplementation on plasma AA concentrations

		GAA, g/d						P-value1
AA	Met, g/d	0	10	20	30	40	SEM	Met	G-L	G-Q	Met × G-L	Met × G-Q
Total AA, mM	0	2.03	2.21	2.37	1.91	2.11	0.11	0.65	0.96	0.01	0.67	0.43
	12	1.93	2.12	2.26	2.15	1.96
		% of total AA
Methionine	0	1.13	1.12	1.23	1.22	1.15	0.10	<0.001	0.15	0.36	0.40	0.98
	12	1.72	1.61	1.77	2.06	1.76
Taurine	0	1.47	1.51	1.31	1.66	1.53	0.16	0.07	0.38	0.74	0.10	0.42
	12	1.79	2.00	1.84	1.55	1.58
Arginine	0	5.13	5.79	5.85	5.53	6.11	0.26	0.64	0.002	0.11	0.73	0.51
	12	4.88	5.99	5.65	5.44	5.86
Ornithine	0	3.11	3.60	3.49	2.96	3.30	0.16	0.08	0.28	0.03	0.75	0.49
	12	2.92	3.33	3.34	2.91	2.89
Citrulline	0	3.62	3.89	3.81	3.53	3.71	0.31	0.40	0.78	0.31	0.97	0.69
	12	3.16	3.74	3.55	3.13	3.39
Leucine	0	7.38	6.98	7.67	7.17	6.53	0.47	0.24	0.50	0.28	0.53	0.56
	12	6.76	5.89	6.42	7.33	6.02
Isoleucine	0	6.25	5.44	6.31	5.86	5.52	0.44	0.16	0.43	0.58	0.87	0.36
	12	5.85	4.62	4.73	5.88	4.87
Valine	0	10.93	10.85	11.41	11.58	10.89	0.60	0.05	0.70	0.69	0.96	0.50
	12	10.02	9.14	9.65	10.42	9.63
Lysine	0	4.37	4.43	4.32	4.13	4.64	0.37	0.55	0.53	0.59	0.78	0.14
	12	4.20	4.69	4.81	4.77	4.47
Histidine	0	3.82	3.89	3.45	3.84	3.30	0.20	0.35	0.05	0.11	0.81	0.47
	12	3.80	4.24	3.97	3.71	3.63
Threonine	0	4.00	4.37	4.72	4.39	4.36	0.19	0.86	0.05	0.22	0.86	0.06
	12	4.26	4.12	4.28	4.52	4.50
Tryptophan	0	1.41	1.50	1.68	1.73	1.95	0.08	0.30	<0.001	0.68	0.01	0.34
	12	1.47	1.64	1.63	1.58	1.63
Phenylalanine	0	2.51	2.34	2.87	2.71	2.73	0.16	0.22	0.07	0.30	0.79	0.96
	12	2.83	2.65	2.89	3.23	2.84
Tyrosine	0	2.49	2.45	3.25	2.54	3.06	0.22	0.60	0.006	0.36	0.78	0.07
	12	2.88	2.44	2.75	3.15	3.25
Glutamate	0	3.68	3.26	3.02	3.36	3.63	0.27	0.17	0.69	0.003	0.69	0.79
	12	4.17	3.80	3.58	3.41	4.16
Glutamine	0	15.89	14.16	13.46	14.87	15.02	1.17	0.81	0.89	0.07	0.60	0.40
	12	13.89	14.92	13.90	13.65	15.42
Aspartic acid	0	0.62	0.56	0.47	0.49	0.52	0.05	0.39	0.001	0.01	0.55	0.99
	12	0.69	0.60	0.54	0.51	0.55
Asparagine	0	1.68	1.73	2.04	1.66	1.84	0.10	0.95	0.001	0.98	0.03	0.87
	12	1.60	1.63	1.80	2.06	1.87
Alanine	0	8.53	8.91	8.47	8.52	8.64	0.37	0.01	0.08	0.08	0.11	0.08
	12	11.05	9.92	9.60	9.22	9.81
Serine	0	3.80	3.74	3.71	3.48	3.57	0.20	0.24	0.24	0.06	0.03	0.03
	12	3.81	4.03	4.08	4.26	3.82
Glycine	0	8.00	9.37	7.39	8.63	7.92	0.48	0.92	0.17	0.14	0.58	0.57
	12	8.10	8.84	9.08	7.10	7.94

¹G-L, linear effect of GAA; G-Q, Quadratic effect of GAA.