Table 1.
Physical characteristics and baseline nitrate, nitrite and blood pressure measurements of younger and older adult group participants. 1
| Younger Adults (n = 13) | Older Adults (n = 11) | p-Value | ||||
| Male | 9 | 3 | ||||
| Female | 4 | 8 | ||||
| Age (years) | 25 ± 3 | 56 ± 6 | <0.001 * | |||
| Height (cm) | 178.4 ± 10.1 | 169.8 ± 7.0 | 0.026 * | |||
| Body Mass (kg) | 75.3 ± 14.9 | 74.7 ± 7.9 | 0.90 | |||
| Beetroot | Placebo | Beetroot | Placebo | Beetroot (Between Groups) | Placebo (Between Groups) | |
| Plasma NO2− (nM) | 193.9 ± 77.5 | 153.8 ± 57.7 | 145.4 ± 40.2 | 143.1 ± 60.3 | 0.19 | 0.86 |
| Plasma NO3− (μM) | 111.8 ± 112.5 | 116.0 ± 80.9 | 90.3 ± 62.1 | 127.0 ± 71.1 | 0.90 | 0.27 |
| SBP (mmHg) | 116.8 ± 8.1 | 114.9 ± 9.2 | 125.2 ± 9.6 | 120.9 ± 10.8 | 0.061 | 0.003 * |
| DBP (mmHg) | 68.5 ± 6.0 | 68.8 ± 7.3 | 80.9 ± 6.9 | 77.9 ± 6.3 | 0.81 | 0.042 * |
1 Values are means ± SD. * indicates significant difference (p < 0.05).