Figure 1From: Low doses of caffeine reduce heart rate during submaximal cycle ergometryHeart rate at rest and during exercise. Differences in heart rate 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).Back to article page