TABLE 4.
NHANES subject characteristics1
| Male | Female | |||
|---|---|---|---|---|
| Healthy | Impaired muscle function | Healthy | Impaired muscle function | |
| n | 558 | 829 | 461 | 935 |
| Age, y | 68.5 ± 6.6 | 72.9 ± 7.8 | 68.1 ± 6.5 | 72.7 ± 8.1 |
| BMI, kg/m2 | 27.9 ± 4.4 | 27.8 ± 5 | 27.5 ± 5.1 | 29.2 ± 6.5 |
| Gait speed, m/s | 1.2 ± 0.1 | 0.8 ± 0.2 | 1.2 ± 0.2 | 0.7 ± 0.2 |
| Protein intake, g/d | 82.8 ± 36.6 | 74.0 ± 36.0 | 61.5 ± 26.8 | 56.3 ± 24.5 |
| Energy, kcal/d | 2116.7 ± 800.5 | 1859.1 ± 882.1 | 1583.1 ± 586.5 | 1445.9 ± 566.6 |
| Whole-grain intake, servings/d | 0.97 ± 1.43 | 0.79 ± 1.31 | 0.77 ± 1.11 | 0.68 ± 1.05 |
1
Data are presented as mean ± SD.