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Cardiovascular variables at rest after the acute intake of 3 and 6 mg/kg of caffeine or a placebo.
| Variable (units) | Placebo | 3 mg/kg | 6 mg/kg | p value |
|---|---|---|---|---|
| Heart rate at rest (bpm) | 56 ± 9 | 58 ± 8 | 57 ± 8 | 0.561 |
| Systolic blood pressure (mmHg) | 104 ± 12 | 108 ± 9 | 111 ± 7 | 0.372 |
| Diastolic blood pressure (mmHg) | 68 ± 5 | 70 ± 9 | 70 ± 7 | 0.757 |
| Mean blood pressure (mmHg) | 80.3 ± 5.9 | 82.7 ± 5.3 | 84.0 ± 6.3 | 0.498 |
Data are presented as mean ± standard deviations (SD).
