Table 6.

Amino Acid Intake in Individuals With High Vegetable and Low Animal Protein Diets Compared With Individuals With Low Vegetable and High Animal Protein Diets, Adjusted for Sample, Age, and Sex^*

	% of Total Protein Intake
	High Vegetable and Low Animal Protein Diet	Low Vegetable and High Animal Protein Diet
Amino Acid	(n = 491)	(n = 471)	Difference in %	T Score†
Glutamic acid	22.67 ± 0.11	18.28 ± 0.11	4.39 ± 0.14‡	30.27
Cystine	1.72 ± 0.01	1.51 ± 0.01	0.21 ± 0.01‡	24.50
Proline	7.14 ± 0.06	5.49 ± 0.07	1.66 ± 0.08‡	19.64
Phenylalanine	4.64 ± 0.01	4.44 ± 0.01	0.20 ± 0.01	17.02
Serine	4.62 ± 0.01	4.48 ± 0.01	0.14 ± 0.02	9.11
Tryptophan	1.25 ± 0.00	1.27 ± 0.00	−0.01 ± 0.01	−1.68
Leucine	7.59 ± 0.02	7.76 ± 0.02	−0.17 ± 0.02	−7.06
Arginine	5.44 ± 0.03	5.78 ± 0.03	−0.34 ± 0.04	−9.31
Valine	5.09 ± 0.01	5.32 ± 0.01	−0.22 ± 0.02	−11.69
Aspartic acid	8.34 ± 0.04	9.02 ± 0.04	−0.68 ± 0.05	−12.53
Tyrosine	3.33 ± 0.01	3.52 ± 0.01	−0.19 ± 0.10	−13.18
Glycine	4.95 ± 0.02	4.5 ± 0.02	−0.53 ± 0.03‡	−18.59
Isoleucine	4.24 ± 0.01	4.49 ± 0.01	−0.25 ± 0.01	−23.22
Alanine	4.50 ± 0.02	5.13 ± 0.02	−0.63 ± 0.03‡	−23.63
Histidine	2.57 ± 0.01	2.90 ± 0.01	−0.33 ± 0.01‡	−26.77
Threonine	3.56 ± 0.01	4.01 ± 0.01	−0.45 ± 0.01‡	−33.84
Methionine	1.91 ± 0.01	2.30 ± 0.01	−0.38 ± 0.01‡	−40.56
Lysine	5.09 ± 0.02	6.76 ± 0.03	−1.68 ± 0.03‡	−50.68

^*Data are given as mean ± SE unless otherwise indicated.

^†Based on 955 df in the analyses of variance across the 2 combinations of vegetable and animal protein intake.

^‡Difference greater than 10% of the mean of the 2 values.