Figure 2
From: Low doses of caffeine reduce heart rate during submaximal cycle ergometry
Systolic blood pressure at rest and during exercise. Differences in Systolic blood pressure between placebo and caffeine trials. Placebo, 1.5 and 3.0 represent dose of caffeine in mg·kg body weight-1. Values are listed as mean ± SE. * = the mean difference compared to placebo is significant (p < 0.05)