Answer:
Caffeine caused significant increase in the mean systolic
blood pressure (60 minutes post ingestion) from 116.6 to 128.3
mmHg as compared to placebo conditions. The mean rate
increased from 72.9 to 77.3 Bpm in test group. No change was
observed in control group.
Explanation:
Coffee does raise blood pressure in people who are not used to it but not in regular coffee drinkers; youngsters appear more sensitive to coffee. And the hypertensive effects of coffee seem to depend on ingredients other than caffeine. Habitual coffee drinkers become acclimated to these ingredients so their pressures don't rise more than a point or two, but people who are not used to coffee can expect a temporary rise in their pressures after drinking regular or decaf.
