Table 2.
Essential amino acid intake as percentage of KDRIs by sex.
| EAR | RNI | |||||
|---|---|---|---|---|---|---|
| Men | Women | Men | Women | |||
| N = 1424 | N = 1868 | p | N = 1424 | N = 1868 | p | |
| Essential amino acid (%) | ||||||
| Histidine | 252.3 ± 3.6 | 209.5 ± 3.1 | <0.001 | 196.2 ± 2.9 | 179.5 ± 2.6 | <0.001 |
| Isoleucine | 276.4 ± 3.7 | 253.3 ± 3.2 | <0.001 | 230.3 ± 3.0 | 202.6 ± 2.6 | <0.001 |
| Leucine | 210.5 ± 2.8 | 188.2 ± 2.5 | <0.001 | 171.6 ± 2.3 | 153.9 ± 2.0 | <0.001 |
| Lysine | 111.6 ± 2.2 | 95.0 ± 1.9 * | <0.001 | 87.7 ± 1.7 * | 74.3 ± 1.5 * | <0.001 |
| Methionine | 102.3 ± 1.9 | 92.3 ± 1.7 * | <0.001 | 85.3 ± 1.5 * | 73.9 ± 1.3 * | <0.001 |
| Phenylalanine | 100.6 ± 1.3 | 91.2 ± 1.1 * | <0.001 | 81.7 ± 1.0 * | 73.7 ± 0.9 * | <0.001 |
| Threonine | 170.5 ± 3.0 | 151.7 ± 2.6 | <0.001 | 131.1 ± 2.3 | 121.4 ± 2.0 | <0.001 |
| Tryptophan | 264.0 ± 3.6 | 195.1 ± 3.1 | <0.001 | 176.0 ± 2.4 | 130.1 ± 2.1 | <0.001 |
| Valine | 306.2 ± 3.5 | 272.4 ± 3.0 | <0.001 | 245.0 ± 2.9 | 227.0 ± 2.5 | <0.001 |
KDRIs, Dietary Reference Intakes for Koreans; EAR, estimated average requirement; RNI, recommended nutrient intake. Values are mean ± standard error. * Intake levels of the marked amino acids are lower than EAR or RNI.