Table 4.
Effect of black tea on haemodynamic parameters after 8 days’ intervention measured in the postprandial state.
| parameter | placebo | black tea | difference (95% CI) | Adj P-value |
|---|---|---|---|---|
| SBP (mmHg) | 146.7 ± 0.2 | 143.5 ± 0.2 | −3.2 (−4.2, −2.2) | <0.0001 |
| DBP (mmHg) | 92.5 ± 0.2 | 90.5 ± 0.2 | −2.0 (−2.7,−1.2) | <0.0001 |
| HR (bpm) | 71.4 ± 0.3 | 71.4 ± 0.3 | −0.0 (−1.2, 1.1) | n.s. |
| PP (mmHg) | 54.3 ± 0.2 | 53.4 ± 0.2 | −1.0 (−2.0, 0.0) | n.s. |
| PPT (ms) | 170 ± 2.3 | 203 ± 2.2 | 33.9 (24.6, 43.3) | <0.0001 |
| RI (%) | 76.3 ± 0.7 | 70.4 ± 0.6 | −5.9 (−8.5, −3.3) | <0.0001 |
| SI (m/s) | 9.8 ± 0.1 | 8.3 ± 0.1 | −1.5 (−1.8, −1.2) | <0.0001 |
Values are LSmeans ± SEM, difference tea-placebo with 95% confidence interval (95% CI); Data are the mean values calculated from t1, 2, 3 and 4 h after the last test dose, and analyzed by ANCOVA with the baseline value, gender, age and BMI taken as covariables; SBP = systolic blood pressure, DBP = diastolic blood pressure, HR = Heart rate, PP = pulse pressure, PPT = peak to peak time, RI = reflection Index, SI = stiffness index. n.s. = not significant.