Table 1.
Baseline characteristics of the study participants.
| Placebo (n = 25) |
RBS (n = 25) |
P valuea | |
|---|---|---|---|
| Age (years) | 46.0 ± 14.0 | 41.8 ± 13.5 | 0.272 |
| Sex (male/female) | 7/18 | 11/14 | 0.239 |
| Weight (kg) | 62.2 ± 10.3 | 64.0 ± 11.5 | 0.560 |
| BMI (kg/m2) | 23.2 ± 3.5 | 23.0 ± 3.0 | 0.790 |
| BMI < 25 kg/m2, (n, %) | 16 (64) | 18 (72) | 0.544 |
| BMI ≥ 25 kg/m2, (n, %) | 9 (36) | 7 (28) | |
| SBP (mmHg) | 123.2 ± 19.7 | 118.0 ± 15.0 | 0.302 |
| DBP (mmHg) | 80.1 ± 10.2 | 76.4 ± 9.7 | 0.197 |
| Caffeine intake (mg/day) | 78.3 ± 53.9 | 128.5 ± 107.6 | 0.045 |
Data are expressed as the mean ± standard deviation or number.
aIndependent t-tests or Chi-squared tests were used to determine significant differences between the groups.
DBP: diastolic blood pressure; SBP: systolic blood pressure.