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Boys Show Greater Sensitivity To Caffeine Consumption Than Girls - Study

February 18, 2011: 12:10 PM EST
A U.S. study has found that boys generally are more sensitive to the effects of caffeine consumption -- including a greater energy surge -- than girls. The placebo-controlled study included 26 boys and 26 girls between 12 and 17. Researchers recorded heart rate and blood pressure throughout each of four 90-minute sessions where participants randomly drank beverages containing either no caffeine (control), or 50 mg,100 mg or 200 mg of caffeine. Besides the greater energy surge, boys reported that caffeine had a positive effect on their athletic performance. The study also revealed some physiological differences between boys and girls in response to caffeine. Among boys, diastolic blood pressure increased and heart rate decreased as percentage of caffeine increased. This was not the case among girls.
"High-Caffeine-Consuming Boys Get Greater Rush from Caffeine than Girls, Report Improved Sport Performance", News release, University at Buffalo, February 18, 2011, © University at Buffalo
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